Fuel Processing Technology最新文献_第2页

New perspectives on the effects of texture and chemical properties on the hydrogen storage capacity of biochar at room temperature 结构和化学性质对生物炭室温储氢能力影响的新视角

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-11-01 DOI: 10.1016/j.fuproc.2023.107922

Lihua Deng, Yijun Zhao, Shaozeng Sun, Dongdong Feng, Wenda Zhang

{"title":"New perspectives on the effects of texture and chemical properties on the hydrogen storage capacity of biochar at room temperature","authors":"Lihua Deng, Yijun Zhao, Shaozeng Sun, Dongdong Feng, Wenda Zhang","doi":"10.1016/j.fuproc.2023.107922","DOIUrl":"10.1016/j.fuproc.2023.107922","url":null,"abstract":"<div>Analyzing the effects of texture and chemical structure on hydrogen adsorption performance at room temperature can provide a theoretical basis for accurately constructing carbon-based hydrogen adsorbents. Based on thermal regulation technology, the biochar with different specific surface areas (803.85–2801.88 m2/g) and oxygen content (21.57–41.86%) was successfully prepared by the two-step “carbonization-activation” method. Various characterization methods were used to explore the relationship between the physicochemical structure and hydrogen adsorption characteristics at room temperature. The results show that the hydrogen storage characteristics of biochar at room temperature are controlled by specific surface area, oxygen content, and acidic surface groups. The boundary conditions for promoting/inhibiting hydrogen adsorption are related to oxygen content. In different pressure regions, specific surface area, oxygen content, and the acid surface group have different degrees of effect on hydrogen adsorption, and oxygen content has the most significant impact. The Freundlich model accurately fits the hydrogen adsorption process at room temperature. Among the carbon-based hydrogen storage materials, biochar has excellent hydrogen storage performance, with an adsorption capacity of 0.52 wt% at 50 bar.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"250 ","pages":"Article 107922"},"PeriodicalIF":7.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46890265","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: 1

Optical characterization of ethanol spray flame on a constant volume combustion chamber 定容燃烧室中乙醇喷射火焰的光学表征

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-11-01 DOI: 10.1016/j.fuproc.2023.107928

Xiaoteng Zhang , Chao Geng , Zhenyang Ming , Haifeng Liu , Yanqing Cui , Chao Jin , Long Liu

{"title":"Optical characterization of ethanol spray flame on a constant volume combustion chamber","authors":"Xiaoteng Zhang , Chao Geng , Zhenyang Ming , Haifeng Liu , Yanqing Cui , Chao Jin , Long Liu","doi":"10.1016/j.fuproc.2023.107928","DOIUrl":"10.1016/j.fuproc.2023.107928","url":null,"abstract":"<div>Studying pure ethanol spray flame has the potential to achieve the carbon neutrality vision. This paper studies the effects of fuel injection masses (12, 24, 36 mg) and fuel injection pressures (30, 40, 50 MPa) on ethanol spray flame on an optically visualized constant volume combustion chamber. Further compared with the spray flame of methanol and n-butanol. The combustion characteristics and flame development process were revealed by flame self-illumination high-speed imaging method, and the soot distribution was revealed by wavelength integration two-color method. Results show that ethanol spray flame presents an unstable yellow flame with many wrinkles. Small injection masses exist a partial flame-quenching phenomenon. As injection mass increases, the soot lift-off length decreases, and the flame brightness, soot concentration, and ignition delay increase. The high soot concentration areas locate upstream of the flame, and there is almost no soot downstream. Increased injection pressure increases the soot lift-off length and decreases the flame brightness. The ignition delay is shortened from 8.388 ms to 6.955 ms when injection pressure increases from 30 MPa to 40 MPa. But higher injection pressure has a negligible effect on reducing ignition delay. Finally, an ethanol spray combustion conceptual model is proposed. This paper gives particular guiding significance to the future use of carbon-neutral ethanol in diesel engines.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"250 ","pages":"Article 107928"},"PeriodicalIF":7.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45113653","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: 1

Green sucrose-sol-gel combustion synthesis of a CuO-based oxygen carrier for NOx emission reduction and its cyclic reaction performance 绿色蔗糖-溶胶-凝胶燃烧合成氧化铜基氧载体及其循环反应性能

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-11-01 DOI: 10.1016/j.fuproc.2023.107924

Xianxing Huang , Min Zheng , Hua Wang , Kang Li , Jun Wu

{"title":"Green sucrose-sol-gel combustion synthesis of a CuO-based oxygen carrier for NOx emission reduction and its cyclic reaction performance","authors":"Xianxing Huang , Min Zheng , Hua Wang , Kang Li , Jun Wu","doi":"10.1016/j.fuproc.2023.107924","DOIUrl":"10.1016/j.fuproc.2023.107924","url":null,"abstract":"<div>Chemical-looping combustion has attracted considerable attention as a novel combustion technology. In this study, precursors were prepared using the sol–gel method with sucrose complexation followed by combustion to synthesize CuO-based oxygen carriers (OCs) supported on an Al2O3–TiO2 template. The sucrose complexing agent inhibited the release of NOx during combustion. When the molar ratio of sucrose to Cu(NO3)2·3H2O (R) was <0.36, the NOx produced included both NO and NO2. When R exceeded 0.73, the NOx produced by precursor combustion was primarily NO, and its concentration was greatly reduced. A slower heating rate also reduced the release of NOx. At a heating rate of 1 °C/min, the release of NOx was 80% lower than that at a heating rate of 10 °C/min. All OCs were stable for ten redox cycles. Increasing the sucrose complexant content resulted in an initial increase in the reactivity of the OCs followed by a decrease. The best performing OC had an R value of 0.36 and yielded the highest mean CO2 percentage (61.27%). When R exceeded 1.00, the sintering and agglomeration of CuO-based OCs were severe, and the mean CO2 yield was reduced to 57.20%. The carbon deposits from the CH4 decomposition were completely oxidized to CO2 by the air in the reactor.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"250 ","pages":"Article 107924"},"PeriodicalIF":7.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54398481","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

One-pot cogeneration of phenol-rich bio-oil, hydrogen-rich gas and solid carbon degradation material from reed 以芦苇为原料，一锅热电联产富酚生物油、富氢气体和固体碳降解材料

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-11-01 DOI: 10.1016/j.fuproc.2023.107912

Jian Hu , Long Chen , Pengzhang Chen , Shixi Gu , Yu Zhou , Jilong Zhang , Wenjie Zhao , Honglin Tao , Nan Zhou , Baobin Mi , Fangfang Wu

{"title":"One-pot cogeneration of phenol-rich bio-oil, hydrogen-rich gas and solid carbon degradation material from reed","authors":"Jian Hu , Long Chen , Pengzhang Chen , Shixi Gu , Yu Zhou , Jilong Zhang , Wenjie Zhao , Honglin Tao , Nan Zhou , Baobin Mi , Fangfang Wu","doi":"10.1016/j.fuproc.2023.107912","DOIUrl":"10.1016/j.fuproc.2023.107912","url":null,"abstract":"<div>A newly developed two-step catalytic pyrolysis process (TSCP) based on poly-generation technology is proposed to convert reed straw (RS) into phenol-rich bio-oil, hydrogen-rich gas, and solid carbon degradation material over iron-loaded activated carbon. The effects of the first step pyrolysis temperature (T1) and catalyst composition on the product distribution and target product selectivity were investigated. When T1 was 350 °C and 10% Fe/AC catalyst was selected, the concentration of phenolic compounds and H2 peaked at 63.87 area% and 63.29 vol%, respectively. The iron-loaded activated carbon catalysts promoted the decarboxylation and decarbonylation reactions of cellulose and hemicellulose decomposition products, as well as the demethylation and demethoxylation reactions of lignin for the selective production of phenolic compounds and hydrogen gas. In addition, 94.7% quinclorac (10 mg/L) removal was achieved with 0.2 g/L 10% Fe/AC catalyst-doped pyrolysis carbon and 2 mM PMS within 90 min. This study could realize the high-value comprehensive utilization of reed and provide a reference for the full quantitative utilization of other agricultural and forestry wastes.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"250 ","pages":"Article 107912"},"PeriodicalIF":7.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54398312","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

Activation of mixed sawdust and spirulina with or without a pre‑carbonization step: Probing roles of volatile-char interaction on evolution of pyrolytic products 有或没有预碳化步骤的混合木屑和螺旋藻的活化：探索挥发性炭相互作用对热解产物演变的作用

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-11-01 DOI: 10.1016/j.fuproc.2023.107926

Jingyi Liang , Chao Li , Kai Sun , Shu Zhang , Shuang Wang , Jun Xiang , Song Hu , Yi Wang , Xun Hu

{"title":"Activation of mixed sawdust and spirulina with or without a pre‑carbonization step: Probing roles of volatile-char interaction on evolution of pyrolytic products","authors":"Jingyi Liang , Chao Li , Kai Sun , Shu Zhang , Shuang Wang , Jun Xiang , Song Hu , Yi Wang , Xun Hu","doi":"10.1016/j.fuproc.2023.107926","DOIUrl":"10.1016/j.fuproc.2023.107926","url":null,"abstract":"<div>Volatile-char interaction has been well documented in co-pyrolysis of varied feedstocks, which might also exist in activation process and impact pore evolution of activated carbon (AC). This was investigated herein in activation of mixed sawdust and spirulina with K2C2O4 at 800 °C in two scenarios: one-step direct activation or two-step activation with an intermediate pre‑carbonization. The results showed that volatile-char interaction via cross-polymerisation of the volatiles was more significant in the pre‑carbonization step, forming more biochar/bio-oil while less gases. However, volatile-char interaction was not that important in impacting product yields and evolution of pore structures of AC in activation. This was due to the dominance of gasification/cracking with presence of K2C2O4, minimizing the chances for volatile-char interaction. The in-situ DRIFTS characterization of the activation process showed that removal of oxygen-containing species like C<img>O with K2C2O4 was important for generating pore structures. Comparing with two-step activation, one-step activation of sawdust, spirulina and their mixture without pre‑carbonization all generated the ACs of more developed pore structures and showed higher environmental impact. The pre‑carbonization removed a significant portion of thermally unstable aliphatic structures, enhancing aromatic degree and creating difficulty for generating pores via gasification/cracking in subsequent activation.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"250 ","pages":"Article 107926"},"PeriodicalIF":7.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54398488","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: 2

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

Hydrothermal carbonization of poplar sawdust: Effect of deep eutectic solvents on hydrochar's physicochemical properties 杨木木屑的水热碳化:深共晶溶剂对烃类理化性质的影响

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-09-07 DOI: 10.1016/j.fuproc.2023.107952

Yong-xing Chen , Fan Gao , Huan-ran Xiong , Yi Tan , Zhi-peng Zhang , Wen-hui Zeng , Kai-peng Cheng , Yi-xing Yang , Zhi-xiang Xu , Bo Zhang

{"title":"Hydrothermal carbonization of poplar sawdust: Effect of deep eutectic solvents on hydrochar's physicochemical properties","authors":"Yong-xing Chen , Fan Gao , Huan-ran Xiong , Yi Tan , Zhi-peng Zhang , Wen-hui Zeng , Kai-peng Cheng , Yi-xing Yang , Zhi-xiang Xu , Bo Zhang","doi":"10.1016/j.fuproc.2023.107952","DOIUrl":"10.1016/j.fuproc.2023.107952","url":null,"abstract":"<div>In order to enhance carbonization, deep eutectic solvents (DES) as a green solvents has been utilized to remove partial lignin in poplar sawdust (PS) before hydrothermal carbonization (HTC). Results showed that DES pretreatment has a notable role in increasing degree of carbonization for hydrochar. The key role was that after DES pretreatment, more cracks can be found on the surface of PS, leading to a higher temperature on the interior of crack to promote cellulose hydrolysis and dehydration and enhance contact between aqueous phase with PS. After DES pretreatment, the cellulose and lignin still could be found in hydrochar. The crack formation on the surface of PS changed the HTC style for PS and accelerated the hydrolysis and carbonization. DES pretreatment was an effective method to increase the degree of carbonization for hydrochar during HTC. It would pave a new way to utilization of hydrochar for its high degree of carbonization.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"251 ","pages":"Article 107952"},"PeriodicalIF":7.5,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44216191","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

Enhanced morphological maintenance and redox stability by dispersing nickel ferrite into silica matrix for chemical looping hydrogen production via water splitting 通过将铁氧体镍分散到二氧化硅基质中用于水分解化学循环制氢，增强了形态维持和氧化还原稳定性

IF 7.5 2区工程技术

Fuel Processing Technology Pub Date : 2023-09-06 DOI: 10.1016/j.fuproc.2023.107946

Jinqing Ji, Laihong Shen

{"title":"Enhanced morphological maintenance and redox stability by dispersing nickel ferrite into silica matrix for chemical looping hydrogen production via water splitting","authors":"Jinqing Ji, Laihong Shen","doi":"10.1016/j.fuproc.2023.107946","DOIUrl":"10.1016/j.fuproc.2023.107946","url":null,"abstract":"<div>Chemical looping hydrogen production (CLHP) is widely regarded as a clean and efficient route for high purity hydrogen production. However, a huge barrier is how to avoid serious deactivation caused by sintering and agglomeration of oxygen carriers. A novel fabrication process of highly dispersing NiFe2O4 into silica matrix is proposed. The oxygen carriers of NiFe2O4 completely dispersed over silica matrix (NFSM) are successfully synthesized. The characterizations, hydrogen production capacity and cycle redox performance of oxygen carriers are further investigated. The results illustrate that NiFe2O4 active components are homogeneously dispersed on the silica matrix without any impurities. NFSM demonstrates the highest reactivity with CO as well as the greatest hydrogen production of 296 mL/g due to the strong confinement effect of silica matrix and good particle dispersion. The porous silica matrix offers large amounts of channels for the lattice oxygen transport and effectively prevents Fe and Ni cations outward migration to particle surface, which actually inhibits the larger clusters and sintering. NFSM can keep stable hydrogen production of approximately 290 mL/g during the cyclic experiments. Briefly, the innovation method of embedding active component into well-established silica matrix supports contributes to the enhanced anti-sintering properties and redox stability of oxygen carriers.</div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"251 ","pages":"Article 107946"},"PeriodicalIF":7.5,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47443049","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