Journal of The Energy Institute最新文献_第5页

Identification of organic components in coal tar by pressurized fluid extraction in conjunction with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-03-12 DOI: 10.1016/j.joei.2025.102073

Xu Ren , Jin-Hui Yang , Jiang-Fen Duan , Xiu-Lin Feng , Yue Zhang , Lang Liu , Ya-Kun Tang , Xiao-Dong Zhou

{"title":"Identification of organic components in coal tar by pressurized fluid extraction in conjunction with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry","authors":"Xu Ren , Jin-Hui Yang , Jiang-Fen Duan , Xiu-Lin Feng , Yue Zhang , Lang Liu , Ya-Kun Tang , Xiao-Dong Zhou","doi":"10.1016/j.joei.2025.102073","DOIUrl":"10.1016/j.joei.2025.102073","url":null,"abstract":"<div><div>Coal tar (CT) is an important source of high-value chemicals (phenols and arenes), and accurate analysis of CT is crucial for extracting these chemicals. In this study, pressurized fluid extraction (PFE) was used to simplify the analysis of medium- and low-temperature coal tar (M/LTCT). The extract was analyzed with comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC × GC/TOF-MS) to identify the M/LTCT organic components (M/LTCTOC). The extraction solvents were effectively screened by examining the composition and structure of the extracts, with acetonitrile extracts containing the highest abundance of high-value compounds such as phenols and arenes. Furthermore, the detected compounds in the M/LTCTOC were accurately identified by GC × GC/TOF-MS according to the separation mechanism of the two columns and the “tile effect” of homologous compounds. A total of 736 organic constituents were identified, including alkanes, alkenes, cycloalkanes, arenes, phenols, and other heteroatom-containing organic compounds. Biomarkers were also identified and analyzed in detail. Compared with the conventional GC/MS analysis of complex mixtures, GC × GC/TOF-MS can effectively enhance the separation of organic compounds, avoid co-elution of compounds, reveal more structural and compositional details of M/LTCTOCs, and ensure the efficient separation and identification of high-value compounds.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102073"},"PeriodicalIF":5.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalytic steam gasification of pine sawdust for hydrogen-rich syngas production in a decoupled triple bed reaction system

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-03-12 DOI: 10.1016/j.joei.2025.102072

Yu Yang, Pingping Tang, Yican Jiang, Daiyang Long, Junyu Xia

{"title":"Catalytic steam gasification of pine sawdust for hydrogen-rich syngas production in a decoupled triple bed reaction system","authors":"Yu Yang, Pingping Tang, Yican Jiang, Daiyang Long, Junyu Xia","doi":"10.1016/j.joei.2025.102072","DOIUrl":"10.1016/j.joei.2025.102072","url":null,"abstract":"<div><div>In the present work, a novel decoupled biomass gasification system was proposed, aiming at improving the syngas quality, particularly increasing the H<sub>2</sub> yield, as well as decreasing the tar and CO<sub>2</sub> contents. Pine sawdust was used as the raw material, and a series of gasification experiments were primarily performed in a three-stage fixed bed reactor, to investigate the effects of pyrolysis, gasification and reforming temperatures, steam flow rate, peroxide coefficient, NiO load rate and CaO/biochar mass ratio on its gasification properties. Moreover, the total gas yield, tar content, low heating value of syngas, gasification efficiency and carbon conversion efficiency were examined. The results indicated that a high reaction temperature was able to facilitate the tar cracking and H<sub>2</sub> production. With increasing steam flow rate and peroxide coefficient, the total gas yield and H<sub>2</sub> content first rose and then reduced, while the tar content showed an opposite trend. The modification of NiO on Fe-based oxygen carriers (OCs) enhanced the tar destruction and total gas yield, particularly the H<sub>2</sub> concentration. Furthermore, CaO/biochar played a dual role as the CO<sub>2</sub> sorbent at a lower temperature but as the catalyst at a higher temperature. Specially, separately adopting NiO/Fe-based OCs and CaO/biochar as the solid-phase gasification agent and CO<sub>2</sub> sorbent, a product syngas with the H<sub>2</sub> and its total gas yield of 0.54 and 0.86 Nm<sup>3</sup>/kg, and the CO<sub>2</sub> and tar content of 0.07 Nm<sup>3</sup>/kg and 123.43 g/Nm<sup>3</sup> was obtained at the pyrolysis, gasification and reforming temperatures of 700, 700 and 800 °C, peroxide coefficient of 0.1, steam flow rate of 0.4 ml/min, NiO load rate of 15 %, and CaO/biochar mass ratio of 3. This study provides a basis data for the application of PS gasification.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102072"},"PeriodicalIF":5.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Outstanding low-temperature activity and stability of NiCo alloy catalysts derived from NiCoAl-LDHs for CO2 methanation

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-03-12 DOI: 10.1016/j.joei.2025.102070

Fanying Zhang , Bin Lu , Linlin Xu

{"title":"Outstanding low-temperature activity and stability of NiCo alloy catalysts derived from NiCoAl-LDHs for CO2 methanation","authors":"Fanying Zhang , Bin Lu , Linlin Xu","doi":"10.1016/j.joei.2025.102070","DOIUrl":"10.1016/j.joei.2025.102070","url":null,"abstract":"<div><div>Compared with monometallic catalysts, alloy catalysts demonstrate inferior catalytic advantages because of the synergistic promotion effect of bimetal. Here, we prepared NiCo alloy catalysts using NiCoAl-LDHs as precursors by thermal method and used them for the CO<sub>2</sub> methanation reaction. The Ni<sub>7</sub>Co<sub>3</sub>-R alloy catalyst exhibits outstanding low-temperature catalytic activity (200–300 °C) in the CO<sub>2</sub> methanation reaction, and has not been deactivated at 300 °C for 180 h. The synergistic effect of Ni and Co in the alloy catalysts is beneficial to reduce the particle size, promote the reduction of the catalysts and increase the number of moderately basic sites, which are beneficial to the adsorption of CO<sub>2</sub> and the formation of CH<sub>4</sub>. Further, the hydrotalcite-derived NiCo alloy catalysts have a unique mosaic structure, thereby significantly improving the stability of catalysts. The in-situ FTIR analysis confirm the CO<sub>2</sub> methanation reaction via the CO∗ pathway over Ni<sub>7</sub>Co<sub>3</sub>Al-R catalyst. This work has a certain guiding effect on the preparation of Ni-base catalysts with excellent low-temperature activity and high stability.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102070"},"PeriodicalIF":5.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigations on the low temperature reforming combustion of n-butanol/n-heptane mixtures utilized on an optical engine

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-03-11 DOI: 10.1016/j.joei.2025.102066

Chao Geng , Xiaoteng Zhang , Yanqing Cui , Haifeng Liu , Mingfa Yao

{"title":"Investigations on the low temperature reforming combustion of n-butanol/n-heptane mixtures utilized on an optical engine","authors":"Chao Geng , Xiaoteng Zhang , Yanqing Cui , Haifeng Liu , Mingfa Yao","doi":"10.1016/j.joei.2025.102066","DOIUrl":"10.1016/j.joei.2025.102066","url":null,"abstract":"<div><div>N-butanol is a highly potential carbon-neutral fuel because it can be obtained from the fermentation of woody stems, straw, agricultural waste, etc. Which contains cellulose biomass and lignin. Studying low-temperature reforming combustion of n-butanol can provide an important reference value for its application in compression ignition engines and provide a potential solution to the condition expansion and cold start problems at homogeneous charge compression ignition (HCCI). Therefore, this paper used n-heptane as the diesel characterization fuel on an optical engine, and studied the effects of different reforming temperatures (623 K, 523 K, 423 K) on the low-temperature reforming combustion of n-butanol/n-heptane mixtures (B30, B50, B70) through a homemade low-temperature fuel reforming system. This paper used flame self-luminous high-speed imaging technology to reveal the flame development process and combustion characteristics. The results show that low-temperature reforming delays the ignition delay of B30 and B50 but advances the ignition delay of B70. When the reforming temperature increases, the maximum pressure rise rate of B50 and B30 decreases, the flame development rate slows, and the flame self-luminescence brightness weakens. At the same time, the flame development mode gradually changes from being dominated by sequential spontaneous combustion to being dominated by flame propagation. For B70, as the reforming temperature increases, the maximum pressure rise rate increases first and then reduces, the flame development rate accelerates, and the combustion becomes more intense. In addition, the flame development mode gradually changes from flame propagation dominated to sequential spontaneous combustion dominated. In general, the more n-butanol is added to the mixtures, the slower the flame develops.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102066"},"PeriodicalIF":5.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of H2, CO2, and H2O on the laminar burning velocity and reaction kinetics of methane/air flames under lean combustion conditions

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-03-11 DOI: 10.1016/j.joei.2025.102075

Jiayi Lin , Zhongqian Ling , Jiamin Li , Dingkun Yuan , Xianyang Zeng , Jiangrong Xu , Xinlu Han

{"title":"Effects of H2, CO2, and H2O on the laminar burning velocity and reaction kinetics of methane/air flames under lean combustion conditions","authors":"Jiayi Lin , Zhongqian Ling , Jiamin Li , Dingkun Yuan , Xianyang Zeng , Jiangrong Xu , Xinlu Han","doi":"10.1016/j.joei.2025.102075","DOIUrl":"10.1016/j.joei.2025.102075","url":null,"abstract":"<div><div>With increasing focus on clean energy, the combustion characteristics of methane, especially its laminar burning velocity, have garnered significant attention. This study presents a numerical investigation of the laminar burning velocity of methane/air mixtures incorporating various additives, using three different models. In addition to the laminar burning velocity, peak mole fractions of O, OH, and CH<sub>3</sub> at their maximum concentrations were analyzed, along with a sensitivity analysis conducted under the maximum temperature gradients. The results indicate that the behavior of methane flames varies with the addition of different gases. The addition of H<sub>2</sub> leads to a nearly linear increase in laminar burning velocity, accompanied by a slight rise in the mole concentrations of H and OH, while the concentration of CH<sub>3</sub> remains nearly unchanged. However, the addition of CO<sub>2</sub> and H<sub>2</sub>O results in a decrease in laminar burning velocity, radical mole concentrations, and flame temperature. Furthermore, the impact of overall activation energy and overall activation order on the laminar burning velocity of the global one-step reaction is also discussed in detail. In summary, the addition of H<sub>2</sub> does not significantly affect either the overall activation energy or overall activation order, whereas CO<sub>2</sub> and H<sub>2</sub>O contribute to reductions in both parameters. These findings could be beneficial to practical applications, including Exhaust Gas Recirculation (EGR) and Carbon Capture Utilization Storage (CCUS).</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102075"},"PeriodicalIF":5.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The catalytic gasification of biochar by CeO2 nano-catalytic systems with different morphologies

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-03-04 DOI: 10.1016/j.joei.2025.102057

Weiwei Wu , Muhammad Asif Akhtar , Yun Hao , Wenran Gao , Dengyu Chen , Xin Guo , Shu Zhang

{"title":"The catalytic gasification of biochar by CeO2 nano-catalytic systems with different morphologies","authors":"Weiwei Wu , Muhammad Asif Akhtar , Yun Hao , Wenran Gao , Dengyu Chen , Xin Guo , Shu Zhang","doi":"10.1016/j.joei.2025.102057","DOIUrl":"10.1016/j.joei.2025.102057","url":null,"abstract":"<div><div>This paper investigates the potential of the rare earth catalyst CeO<sub>2</sub> to catalyse the CO<sub>2</sub> gasification of biomass-derived char. The hydrothermal process conditions were optimised to prepare CeO<sub>2</sub> catalysts with varying morphologies and oxygen vacancy abundancies. The catalytic performance of CeO<sub>2</sub> was examined in a laboratory-scale fixed-bed reactor during char gasification under CO<sub>2</sub> atmosphere. The experimental results demonstrate that the increasing temperature and catalyst dispersion significantly enhance the gasification efficiency in CeO<sub>2</sub>-catalysed processes. The gasification performance of CeO<sub>2</sub> nanocatalysts with varying morphologies (rod, cube, polygon) was assessed under identical experimental conditions. The morphology of the catalyst is indirectly related to its catalytic performance and catalytic structure, and the rod-shaped catalysts exhibit more oxygen vacancies. The CeO<sub>2</sub>-R(N) catalyst, which exhibited the highest oxygen vacancy content, gave the best catalytic performance. It is believed that these oxygen vacancies serve as active sites that enhance CO<sub>2</sub> adsorption and activation, facilitating the Boudouard reaction and improving gasification efficiency. This morphology-driven variation in vacancy formation directly impacts the catalytic properties of CeO<sub>2</sub>, accelerating reaction kinetics and increasing syngas yield.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102057"},"PeriodicalIF":5.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-scale exploration of the effects of fuel structure and hydrogen-doped on soot formation

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-02-28 DOI: 10.1016/j.joei.2025.102056

Dongyang Wang, Liang Yan, Jinfang Yao, Wenlong Dong, Huaqiang Chu

{"title":"Multi-scale exploration of the effects of fuel structure and hydrogen-doped on soot formation","authors":"Dongyang Wang, Liang Yan, Jinfang Yao, Wenlong Dong, Huaqiang Chu","doi":"10.1016/j.joei.2025.102056","DOIUrl":"10.1016/j.joei.2025.102056","url":null,"abstract":"<div><div>Due to energy crises and environment pollution, zero-carbon fuel hydrogen (H<sub>2</sub>) and low-carbon fuel natural gas (NG) as alternative fuels for engines have received widespread interest. Especially, H<sub>2</sub>-doping in dual-fuel system utilizing NG and diesel presents huge opportunities. To clarify the effects of surrogate fuel structure and H<sub>2</sub>-doped on the soot formation mechanism, the laminar diffusion flame of CH<sub>4</sub> + toluene, H<sub>2</sub> + CH<sub>4</sub> + toluene, FH<sub>2</sub> + CH<sub>4</sub> + toluene at 2–8 atm are calculated by the CoFlame code. The CH<sub>4</sub> + toluene, H<sub>2</sub> + CH<sub>4</sub> + toluene, CH<sub>4</sub> + n-heptane, H<sub>2</sub> + CH<sub>4</sub> + n-heptane combustion systems are calculated by Reactive Force Field Molecular Dynamics. Multi-scale perspectives indicate that the effect of toluene on soot propensity is higher than that of n-heptane, due to differences in fuel structure. The hydrogen abstraction-vinyl radical addition, hydrogen abstraction-acetylene addition and the polycondensation of long-chains aliphatic hydrocarbons on the benzene ring are three main pathways for surface growth. Doping H<sub>2</sub> will chemically promote the soot formation in CH<sub>4</sub> + toluene combustion. It is mainly manifested in the acceleration of the polycyclic aromatic hydrocarbon condensation process and dehydrogenation reaction. In the H<sub>2</sub> + CH<sub>4</sub> + toluene combustion system, the H/C ratio of the largest soot particles declines. This reduction plays a crucial role in facilitating the maturation of soot. Additionally, the proportion of six-membered rings within the soot particles shows a significant upward trend. Consequently, the molecular structure of the soot particles becomes more stable and the morphology becomes more regular.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102056"},"PeriodicalIF":5.6,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the correlation between coal property parameters and its pyrolysis heat absorption

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-02-27 DOI: 10.1016/j.joei.2025.102061

Ziang Wang , Cheng Li , Zheng Wang , Tao Wang , Gartzen Lopez , Liang Wang

{"title":"Study on the correlation between coal property parameters and its pyrolysis heat absorption","authors":"Ziang Wang , Cheng Li , Zheng Wang , Tao Wang , Gartzen Lopez , Liang Wang","doi":"10.1016/j.joei.2025.102061","DOIUrl":"10.1016/j.joei.2025.102061","url":null,"abstract":"<div><div>Coal properties are important factors affecting the coal pyrolysis heat absorption. In this work, thermogravimetric-differential scanning calorimetry (TG-DSC) method was used to measure the pyrolysis heat absorption of 20 coal samples with different degrees of coalification, including anthracites, bituminous coals, and lignites, to improve understandings about correlation between coal pyrolysis heat absorption and coal property parameters. The pyrolysis heat absorption of coal ranges from 3.2 to 9.1 kJ/g, with the lowest one for lignites and the highest one for bituminous coals. The grey relation analysis was used to identify and assess the correlation degrees between coal pyrolysis heat absorption and coal properties, including proximate analysis, caking index, thickness of colloidal matter layer, vitrinite reflectance, activation energy of pyrolysis reaction. The results showed that the fixed carbon content and activation energy of pyrolysis reaction have the highest correlation degrees with the pyrolysis heat absorption of the studied coals. The activation energy of pyrolysis reaction is linearly positively correlated with the pyrolysis heat absorption of the studied coals. The fixed carbon content and heat absorption are segmented linearly positively correlated, and the segmental point is about 75 % of the fixed carbon content, a correlation equation is provided to estimate the pyrolysis heat absorption of coal based on the fixed carbon content. The comparison between previous studies and present study on the correlation of coal pyrolysis heat absorption and coal property parameter was also discussed.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102061"},"PeriodicalIF":5.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research progress of the synergistic removal of nitrogen oxides(NOx)and chlorinated volatile organic compounds(CVOCs)in industrial flue gas

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-02-27 DOI: 10.1016/j.joei.2025.102058

Ao Huang , Dongrui Kang , Chenguang Zhang , Litong Lu , Boxiong Shen

{"title":"Research progress of the synergistic removal of nitrogen oxides(NOx)and chlorinated volatile organic compounds(CVOCs)in industrial flue gas","authors":"Ao Huang , Dongrui Kang , Chenguang Zhang , Litong Lu , Boxiong Shen","doi":"10.1016/j.joei.2025.102058","DOIUrl":"10.1016/j.joei.2025.102058","url":null,"abstract":"<div><div>The escalating proportions of nitrogen oxides (NO<sub>x</sub>) and chlorinated volatile organic compounds (CVOCs) emissions from industrial flue gas have caused widespread concern. Presently, NH<sub>3</sub>-SCR technology has attained widespread industrial application. The synergistic removal of NO<sub>x</sub> and CVOCs within denitrification equipment is a promising and practical technology. However, in practical industrial emissions, complex components in flue gas will negatively affect the synergistic removal of NO<sub>x</sub> and CVOCs. In this paper, the characteristics of NH<sub>3</sub>-SCR and CVOCs catalytic oxidation reaction systems were systematically summarized separately, and the reciprocal interaction mechanism of the two reaction systems in the synergistic collaborative removal of NO<sub>x</sub>/CVOCs was discussed in detail. In addition, it conducts a multifaceted analysis to outline the impacts of additional gas constituents (SO<sub>2</sub>, heavy metals, HCl) in complex environmental settings on the NO<sub>x</sub>/CVOCs co-abatement process. Furthermore, the method of designing the catalyst to obtain the appropriate surface properties by adjusting the electron structure and electron conductivity is introduced. In conclusion, the study delineates its limitations and proposes avenues for future research development. It is envisaged that this review can bridge the gap between the development of catalysts for the synergistic removal of NO<sub>x</sub>/CVOCs and the practical imperatives, thus furnishing invaluable insights for industrial implementation.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102058"},"PeriodicalIF":5.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of promoters and calcination temperature on the performance of nickel silica core-shell catalyst in biogas dry reforming

IF 5.6 2区工程技术

Journal of The Energy Institute Pub Date : 2025-02-27 DOI: 10.1016/j.joei.2025.102062

Maryam Kaviani, Mehran Rezaei, Seyed Mehdi Alavi, Ehsan Akbari

{"title":"Effect of promoters and calcination temperature on the performance of nickel silica core-shell catalyst in biogas dry reforming","authors":"Maryam Kaviani, Mehran Rezaei, Seyed Mehdi Alavi, Ehsan Akbari","doi":"10.1016/j.joei.2025.102062","DOIUrl":"10.1016/j.joei.2025.102062","url":null,"abstract":"<div><div>In this article, a facile ammonia evaporation method was adopted to synthesize a series of Ni-M-SiO<sub>2</sub>@SiO<sub>2</sub> catalysts promoted with Ce, Zr, La, Co and Mg in order to examine the effect of promoters on the catalytic performance of the core-shell catalyst in biogas dry reforming. The obtained outcomes exhibited that rare earth oxide promoted catalyst displayed higher catalytic activity than the unpromoted catalyst. In addition, when the content of cerium oxide increased from 1 wt% to 5 wt% activity of the catalyst increased from 47.5 % to 57.2 % at 600 °C. Acquired results exhibited that, adding 1 wt% cerium oxide to Ni-SiO<sub>2</sub>@SiO<sub>2</sub> led to improved dry reforming activity and decreased carbon formation during 12 h dry reforming reaction. 10Ni-1Ce-SiO<sub>2</sub>@SiO<sub>2</sub> core-shell catalyst showed higher catalytic activity and lower coke formation than the (10Ni-1Ce)/SiO<sub>2</sub> impregnated catalyst. This observation is because the shell of the catalysts provided steric physical barriers against nickel particles growth, also the nickel phyllosilicate structure posted chemical force that could fix the position of metal particles. The catalytic performance of the catalyst with 1 % cerium oxide was enhanced by enhancing calcination temperature from 700 to 900 °C owing to increase metal-support interaction.</div></div>","PeriodicalId":17287,"journal":{"name":"Journal of The Energy Institute","volume":"120 ","pages":"Article 102062"},"PeriodicalIF":5.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0