Fuel Processing Technology最新文献

Microwave-assisted biodiesel synthesis from waste cooking oil: Exploring the potential of carob pod-derived solid base catalyst 利用废弃食用油进行微波辅助生物柴油合成：探索角豆树豆荚衍生固体基础催化剂的潜力

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-16 DOI: 10.1016/j.fuproc.2024.108161

Babatunde Oladipo, Sisipho Qasana, Sibabalwe C. Zini, Ntokozo Menemene, Tunde V. Ojumu

{"title":"Microwave-assisted biodiesel synthesis from waste cooking oil: Exploring the potential of carob pod-derived solid base catalyst","authors":"Babatunde Oladipo, Sisipho Qasana, Sibabalwe C. Zini, Ntokozo Menemene, Tunde V. Ojumu","doi":"10.1016/j.fuproc.2024.108161","DOIUrl":"10.1016/j.fuproc.2024.108161","url":null,"abstract":"<div><div>This work examined the potency of carob (Ceratonia siliqua) pod as a heterogeneous base catalyst for converting waste cooking oil (WCO) into biodiesel via a microwave irradiation system. The optimal calcination for the catalyst synthesis was achieved at 500 °C for 4 h. Various analytical techniques were employed to investigate the properties of the developed catalyst. The results indicate that the catalyst primarily consists of mesoporous particles abundant in potassium, with medium to strong basic sites, which are crucial for its catalytic function. WCO underwent pretreatment with H2SO4 before being converted to biodiesel. Optimum conditions for the biodiesel production were a methanol-to-WCO molar ratio of 9.87, 1.00 wt% catalyst dosage, 3.03 min reaction time, 450 rpm stirring speed, and 600 W microwave power, yielding 98.20 ± 0.81 wt% biodiesel. The low specific energy consumption value of 0.91 kWh/kg and specific CO2 emission of 0.73 kg/kg of biodiesel suggest the effective utilization of microwave energy in driving the transesterification reaction and in promoting a reduction in carbon footprint, respectively. The synthesized catalyst remained effective up to the 5th production cycle and the biodiesel produced met established specifications. The results of this study show that carob pod is a suitable candidate to be included in the database of biobased catalysts currently being developed for heterogeneous catalysis of cost-effective biodiesel production.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108161"},"PeriodicalIF":7.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An experimental evaluation of thermophysical properties of colloidal suspension of carbon-rich fly ash microparticles and single-walled carbon nanotubes in Jet-A fuel and its impact on evaporation and burning rate 富碳粉煤灰微颗粒和单壁碳纳米管胶体悬浮液在 Jet-A 燃料中的热物理性质及其对蒸发和燃烧速率影响的实验评估

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-16 DOI: 10.1016/j.fuproc.2024.108155

Ahmed Aboalhamayie , Nadeem Ahmad , Yang Zhang , Mohsen Ghamari , Numan Salah , Jameel Alshahrani

{"title":"An experimental evaluation of thermophysical properties of colloidal suspension of carbon-rich fly ash microparticles and single-walled carbon nanotubes in Jet-A fuel and its impact on evaporation and burning rate","authors":"Ahmed Aboalhamayie , Nadeem Ahmad , Yang Zhang , Mohsen Ghamari , Numan Salah , Jameel Alshahrani","doi":"10.1016/j.fuproc.2024.108155","DOIUrl":"10.1016/j.fuproc.2024.108155","url":null,"abstract":"<div><div>This study presents an experimental evaluation of the thermophysical properties of colloidal suspensions of carbon-rich fly ash microparticles (CFA) and single-walled carbon nanotubes (SWCNT) in Jet-A fuel, focusing on their impact on evaporation and burning rates. The research explores the effects of these carbon-based additives on key parameters such as thermal conductivity, viscosity, surface tension, evaporation rate, and combustion behavior. Utilizing a hybrid preparation method combining sonication and surfactants, stable colloidal suspensions were prepared for experimental analysis. The results demonstrate that both CFA and SWCNT enhance the thermal conductivity of Jet-A fuel, with SWCNT achieving a notable 13 % increase at a 1 wt% concentration, while CFA achieves an 8 % increase at a 3 wt% concentration. The study also reveals distinct trends in viscosity and surface tension, with SWCNT causing a significant non-linear increase in viscosity compared to CFA. In combustion experiments, the evaporation rates of CFA and SWCNT suspensions showed considerable improvement, with CFA demonstrating up to an 87 % increase at 1 wt% concentration. The study concludes with an analysis of ignition delay, highlighting the superior performance of SWCNT in reducing ignition time due to their high thermal conductivity and the presence of iron nanoparticles on their surface.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108155"},"PeriodicalIF":7.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable production of biohydrogen: Feedstock, pretreatment methods, production processes, and environmental impact 生物氢的可持续生产：原料、预处理方法、生产工艺和环境影响

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-16 DOI: 10.1016/j.fuproc.2024.108158

Aleksandra Modzelewska , Mateusz Jackowski , Panagiotis Boutikos , Magdalena Lech , Maciej Grabowski , Krystian Krochmalny , María González Martínez , Christian Aragón-Briceño , Amit Arora , Hao Luo , Luca Fiori , Qingang Xiong , Muhammad Yousaf Arshad , Anna Trusek , Halina Pawlak-Kruczek , Lukasz Niedzwiecki

{"title":"Sustainable production of biohydrogen: Feedstock, pretreatment methods, production processes, and environmental impact","authors":"Aleksandra Modzelewska , Mateusz Jackowski , Panagiotis Boutikos , Magdalena Lech , Maciej Grabowski , Krystian Krochmalny , María González Martínez , Christian Aragón-Briceño , Amit Arora , Hao Luo , Luca Fiori , Qingang Xiong , Muhammad Yousaf Arshad , Anna Trusek , Halina Pawlak-Kruczek , Lukasz Niedzwiecki","doi":"10.1016/j.fuproc.2024.108158","DOIUrl":"10.1016/j.fuproc.2024.108158","url":null,"abstract":"<div><div>A significant increase in the use of hydrogen, expected to reach between 667 and 4000 TWh, is forecasted for the whole EU in 2050. Electrolysis is believed to be a “silver bullet” due to its synergy with the needs of the grid. However, biohydrogen generation could be complimentary to electrolysis since it does not depend on electricity prices. This review presents a comprehensive picture of the landscape in biohydrogen production, showing state-of-the-art research on different biohydrogen production processes and highlighting potential problems and shortcomings for different processes, including microbial-based production and thermal processes. The work shows that “colour coding” used nowadays is insufficient in terms of providing accurate information regarding the sustainability of particular biohydrogen production technologies. Instead, LCA can provide substantial information for each investigated process. However, there is a need for a wider scope of LCA studies since currently published studies present a syndrome of “carbon tunnel vision”, often ignoring impacts other than global warming. Moreover, studies often tend to exclude the impact of capital goods production, which might provide an incomplete overview of such technologies. Moreover, it should not be overlooked that biohydrogen is capable of achieving negative values of CO2 emissions if CCS is implemented.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108158"},"PeriodicalIF":7.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct synthesis of dimethyl carbonate from methanol and carbon dioxide over Co-Ce-Zr ternary metal solid solution 在 Co-Ce-Zr 三元金属固溶体上以甲醇和二氧化碳为原料直接合成碳酸二甲酯

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-16 DOI: 10.1016/j.fuproc.2024.108157

Xin Li, Lele Cao, Dongdong Jia, Yongyue Sun

{"title":"Direct synthesis of dimethyl carbonate from methanol and carbon dioxide over Co-Ce-Zr ternary metal solid solution","authors":"Xin Li, Lele Cao, Dongdong Jia, Yongyue Sun","doi":"10.1016/j.fuproc.2024.108157","DOIUrl":"10.1016/j.fuproc.2024.108157","url":null,"abstract":"<div><div>To investigate highly performance catalysts for the direct synthesis of dimethyl carbonate (DMC) from carbon dioxide (CO2) and methanol, a Co0.02/Ce0.7Zr0.3O2 ternary metal solid solution nanoparticle catalyst was synthesized, demonstrating superior performance with a DMC yield of 3.86 mmol g−1 and selectivity of 100 % at 7 MPa and 140 °C. A series of characterizations further validated the successful incorporation of cobalt and zirconium into the crystal lattice of CeO2, resulting in an increased number of acid-base sites on its surface and a rise in oxygen vacancy content from 10.1 % to 28.7 %. The density functional theory (DFT) calculation results further corroborated the experimental findings, indicating that the doping of cobalt and zirconium ions significantly reduced the formation energy of oxygen vacancies on the catalyst surface from 2.53 to −1.38 eV, while concurrently decreasing the adsorption energy of CO2 from −0.33 to −1.74 eV. Additionally, charge calculation results revealed that oxygen vacancies functioned as Lewis acid sites, whereas lattice oxygen atoms served as Lewis base sites, facilitating the cooperative activation of CO2. The results may provide a new approach for designing and improving CeO2-based catalysts for CO2 activation.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108157"},"PeriodicalIF":7.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A bifunctional catalyst for direct CO2 conversion to clean fuels: Mechanistic insights and a comprehensive kinetic model 将二氧化碳直接转化为清洁燃料的双功能催化剂：机理认识和综合动力学模型

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-09 DOI: 10.1016/j.fuproc.2024.108152

Masoud Safari Yazd, Jafar Towfighi Darian

{"title":"A bifunctional catalyst for direct CO2 conversion to clean fuels: Mechanistic insights and a comprehensive kinetic model","authors":"Masoud Safari Yazd, Jafar Towfighi Darian","doi":"10.1016/j.fuproc.2024.108152","DOIUrl":"10.1016/j.fuproc.2024.108152","url":null,"abstract":"<div><div>The escalating global concern over CO2 emissions has spurred extensive research aimed at developing innovative solutions for capturing, storing, and utilizing CO2, crucial for establishing a closed carbon loop. Thermo-catalytic CO2 hydrogenation stands out as a promising approach, though challenged by CO2's high stability, hindering the production of heavy liquid hydrocarbons. This study explores the design and performance of a bifunctional cobalt-based catalyst, promoted by Ru and supported by multiple shells of carbon, mesoporous silica, and ceria for CO2 hydrogenation in the Modified Fischer-Tropsch Synthesis (MFTS) route. Through meticulous characterization and evaluation, the catalyst demonstrates suitable textural properties, reducibility, and dispersion of active sites, promoting CO2 conversion and selectivity towards heavier hydrocarbons, highlighting the significance of catalyst design and operating conditions. The catalyst exhibits notable stability across catalyst deactivation, attributed to its thermal conductivity provided by SiC matrices. SiC-supported catalysts play a pivotal role in enhancing the efficiency, selectivity, and stability of CO2 hydrogenation catalysts. Moreover, in this study, through meticulous evaluation of elementary reactions based on molecular dynamic (MD) computations, a detailed mechanism for MFTS is presented. Key to this mechanism is the H-assisted CO2 dissociation pathway, supported by computational analysis. The pathway involves sequential reactions starting from CO2 adsorption on catalyst sites, followed by successive transformations leading to the formation of hydrocarbon building blocks. Ultimately, a developed MFTS kinetic model based on the MD-evaluated mechanism, which accurately predicts product selectivity across various operational conditions, indicating its robustness and reliability, is presented.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108152"},"PeriodicalIF":7.2,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of diesel spray combustion under micro-hole and ultra-high injection pressure conditions-analyses of diffused back-illumination imaging and OH* chemiluminescence imaging 微孔和超高喷射压力条件下柴油喷雾燃烧特性——扩散背照成像和OH*化学发光成像分析

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-09-11 DOI: 10.1016/j.fuproc.2023.107955

Chang Zhai , Yu Jin , Zehao Feng , Feixiang Chang , Hongliang Luo , Keiya Nishida , Yoichi Ogata

{"title":"Characterization of diesel spray combustion under micro-hole and ultra-high injection pressure conditions-analyses of diffused back-illumination imaging and OH* chemiluminescence imaging","authors":"Chang Zhai , Yu Jin , Zehao Feng , Feixiang Chang , Hongliang Luo , Keiya Nishida , Yoichi Ogata","doi":"10.1016/j.fuproc.2023.107955","DOIUrl":"https://doi.org/10.1016/j.fuproc.2023.107955","url":null,"abstract":"<div>This study investigated the spray combustion characteristics of diesel fuel using the Diffuse Back-illumination Imaging (DBI), Direct Photographic, and OH* chemiluminescence methods under different injection pressures (100–300 MPa) and different hole diameters (0.07–0.133 mm). The results indicated that at a certain point, the downstream of the spray, which holds a strong turbulent mixing, starts to disappear gradually without bright flames due to the cool flame combustion process. Based on this process, the ignition timing was determined using the space integral of intensity and optical thickness through the DBI method, which was validated by the OH* chemiluminescence method. The utilization of a micro-hole diameter injector and ultra-high injection pressure can effectively reduce ignition delay. Significant oxidation processes were observed both downstream and upstream for the micro-hole injector under ultra-high injection pressure. A parameter utilizing spatially integrated natural luminosity to OH* chemiluminescence ratio showed that increasing injection pressure and reducing hole diameter effectively reduced soot under unit fuel oxidation conditions. And predicted model results of droplet diameter and equivalence ratio (Siebers' and Hiroyasu's model) were used to analyze the experimental results. These findings contribute to the understanding of spray combustion characteristics and inform the development of efficient and low-emission combustion systems.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"252 ","pages":"Article 107955"},"PeriodicalIF":7.5,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6642676","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

A review of hydrothermal carbonization of municipal sludge: Process conditions, physicochemical properties, methods coupling, energy balances and life cycle analyses 城市污泥水热碳化的研究进展:工艺条件、理化性质、方法耦合、能量平衡和生命周期分析

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-09-08 DOI: 10.1016/j.fuproc.2023.107943

Youwei Zhi , Donghai Xu , Guanyu Jiang , Wanpeng Yang , Zhilin Chen , Peigao Duan , Jie Zhang

{"title":"A review of hydrothermal carbonization of municipal sludge: Process conditions, physicochemical properties, methods coupling, energy balances and life cycle analyses","authors":"Youwei Zhi , Donghai Xu , Guanyu Jiang , Wanpeng Yang , Zhilin Chen , Peigao Duan , Jie Zhang","doi":"10.1016/j.fuproc.2023.107943","DOIUrl":"https://doi.org/10.1016/j.fuproc.2023.107943","url":null,"abstract":"<div>Hydrothermal carbonization (HTC) is an effective way to harmlessly dispose municipal sludge (MS). This work comprehensively reviewed critical hydrothermal parameters of HTC, reaction mechanisms, physicochemical characteristics, applications of target products, technology coupling, energy balance, economic evaluation and life cycle analyses. The formation of hydrochar is predominantly attributed to the polymerization of remarkably reactive intermediates generated through the degradation of biopolymers in MS, as well as the solid-solid conversion of their insoluble components. Physicochemical properties of target products are closely related to process parameters and chemical compositions of MS, which provide a promising opportunity to acquire desired products by optimizing reaction conditions. The combination of other wastes with MS, and the coupling of different processes (e.g., pyrolysis) are potential optimization methods of HTC. The synergy of technological coupling enables the augmentation of value within the product. Typical energy balances of HTC indicate that net energy recovery exists even when the moisture content of municipal sludge is up to 91%. The combination of hydrochar as a substitute for fossil fuels and anaerobic digestion or recycling of process water is very favorable for the life cycle assessment of HTC of MS. Ultimately, some prospects for HTC of MS are highlighted.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"254 ","pages":"Article 107943"},"PeriodicalIF":7.5,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6551339","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

Bio-oil as a carbon source for synthesis of pin-like cobalt catalyst for hydrogenation of o-chloronitrobenzene 以生物油为碳源合成邻氯硝基苯加氢针状钴催化剂

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-09-01 DOI: 10.1016/j.fuproc.2023.107814

Mengjiao Fan , Yuewen Shao , Kai Sun , Yuchen Jiang , Shu Zhang , Yi Wang , Song Hu , Jun Xiang , Xun Hu

{"title":"Bio-oil as a carbon source for synthesis of pin-like cobalt catalyst for hydrogenation of o-chloronitrobenzene","authors":"Mengjiao Fan , Yuewen Shao , Kai Sun , Yuchen Jiang , Shu Zhang , Yi Wang , Song Hu , Jun Xiang , Xun Hu","doi":"10.1016/j.fuproc.2023.107814","DOIUrl":"https://doi.org/10.1016/j.fuproc.2023.107814","url":null,"abstract":"<div>Bio-oil as a carbon source can be used to prepare hybrid metal@carbon material while the polymerization of which generally prevents metals from exposure. In this study, melamine was used as a structural regulating agent for preparing Co/N/C catalyst via heating the mixture of cobalt nitrate, melamine and bio-oil for hydrogenation of o-chloronitrobenzene (o-CNB). The results showed that the Co species was encapsulated in the carbon structure from cross-polymerization of melamine and bio-oil at 600 °C. The further heating to 900 °C led to decomposition of melamine-derived substance, and meanwhile cobalt oxide was reduced and confined in the resulting carbon structure. The formed metallic Co catalyzed the growth of long carbon nanotube with cobalt on the tip, forming the Co/N/C catalyst of higher specific surface area (128.2 m2/g) and metallic Co dispersion (3.7%), rendering the superior activity for hydrogenation of o-CNB with the yield of o-chloroaniline up to 90.2%. The encapsulation or exposure of Co species was closely related to relative ratio of bio-oil and melamine in the catalyst precursors. Additionally, leaching of cobalt, due to dechlorination of o-CNB, was found to be an issue of Co/N/C catalyst but not for that of Ni/N/C catalyst.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"248 ","pages":"Article 107814"},"PeriodicalIF":7.5,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1754010","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

Non-thermal plasma catalytic dry reforming of methane over Ni-Co3O4 supported modified-titania catalysts: Effect of process conditions on syngas production Ni-Co3O4负载改性二氧化钛催化剂上甲烷非热等离子体催化干重整:工艺条件对合成气生产的影响

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-09-01 DOI: 10.1016/j.fuproc.2023.107836

Tariq Abbas, Hamdya Sabrina Mohidin Yahya, Nor Aishah Saidina Amin

{"title":"Non-thermal plasma catalytic dry reforming of methane over Ni-Co3O4 supported modified-titania catalysts: Effect of process conditions on syngas production","authors":"Tariq Abbas, Hamdya Sabrina Mohidin Yahya, Nor Aishah Saidina Amin","doi":"10.1016/j.fuproc.2023.107836","DOIUrl":"https://doi.org/10.1016/j.fuproc.2023.107836","url":null,"abstract":"<div>The dry reforming of methane has been studied over modified TiO2-supported 10%Ni-5%Co3O4 composite catalysts using a non-thermal plasma dielectric barrier discharge fixed-bed reactor. The 10%Ni-5%Co3O4/modified-TiO2 nanorods (NR) have been synthesized by hydrothermal method. Physicochemical characterizations of the composite catalysts have been conducted by X-ray diffraction (XRD), H2 temperature-programmed reduction (H2-TPR), CO2 temperature-programmed desorption (CO2-TPD), high-resolution transmission electron microscopy (HRTEM) and N2 adsorption-desorption (BET) analysis. Incorporation of cubic-structured Co3O4 into Ni/TiO2 attributes to the enhancement of basicity, reducibility and metal-support interaction. Consequently, the catalytic activity of 10%Ni-5%Co3O4/TiO2 NR increases and confer CH4 and CO2 conversions at 86.4% and 84.9%, respectively. Meanwhile, the H2 and CO selectivity are reported as 50.1% and 49.0% respectively. Higher syngas ratio (H2/CO) from 0.84 to 1.01 and 26% increment in overall energy efficiency compared to plasma DRM alone have been observed. The superior plasma DRM performance is correlated to the greater basicity properties and the synergistic effect of non-thermal plasma with the 10%Ni-5%Co3O4/modified-TiO2 catalyst composite.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"248 ","pages":"Article 107836"},"PeriodicalIF":7.5,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1754012","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

Direct hydrogenation of CO2 into valuable aromatics over K/Fe-Cu-Al @HZSM-5 tandem catalysts: Effects of zeolite surface acidity on aromatics formation K/Fe-Cu-Al @HZSM-5串联催化剂上CO2直接加氢生成有价芳烃:沸石表面酸度对芳烃生成的影响

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-09-01 DOI: 10.1016/j.fuproc.2023.107824

Chundong Zhang , Kehao Hu , Xixi Chen , Lujing Xu , Chao Deng , Qiang Wang , Ruxing Gao , Ki-Won Jun , Seok Ki Kim , Tiansheng Zhao , Hui Wan , Guofeng Guan

{"title":"Direct hydrogenation of CO2 into valuable aromatics over K/Fe-Cu-Al @HZSM-5 tandem catalysts: Effects of zeolite surface acidity on aromatics formation","authors":"Chundong Zhang , Kehao Hu , Xixi Chen , Lujing Xu , Chao Deng , Qiang Wang , Ruxing Gao , Ki-Won Jun , Seok Ki Kim , Tiansheng Zhao , Hui Wan , Guofeng Guan","doi":"10.1016/j.fuproc.2023.107824","DOIUrl":"https://doi.org/10.1016/j.fuproc.2023.107824","url":null,"abstract":"<div>Direct hydrogenation of carbon dioxide (CO2) to value-added aromatics can not only provide a sustainable aromatics synthesis route but also realize CO2 mitigation. However, it remains a great challenge to identify the optimal surface acidity and regulate the selective formation of aromatics during CO2 hydrogenation. Herein, we designed and prepared a series of K/Fe-Cu-Al@HZSM-5 tandem catalysts, and deeply investigated the effects of zeolite surface acidity on the catalytic performance, by changing the SiO2/Al2O3 ratios of HZSM-5 from 25 to 400. It was found that the surface acidity, especially for the Brønsted acidity, plays a crucial role in the aromatics formation. With an increasing Brønsted acidity from 0 to 290 μmol/g, the CO2 conversion keeps relatively stable (around 44%), however, the aromatics yield monotonously increases from 0.9 to 12.8%, indicating a distinct correlation with the Brønsted acidity. Among the obtained aromatics, the majority ones are C6–8 light aromatics, accounting for c.a. 30–60% within time on stream (TOS) of 24 h, but their proportion tends to gradually decrease with TOS, probably due to the catalyst deactivation by coking. Moreover, the possible reaction pathways for aromatics formation over the prepared K/Fe-Cu-Al@HZSM-5 tandem catalysts were also proposed.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"248 ","pages":"Article 107824"},"PeriodicalIF":7.5,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1828258","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: 3