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Optimizing zeolitic hierarchical pore structure to boost the direct conversion of aromatics from syngas over the iron-based/zeolite bifunctional catalysts

文献类型：期刊论文

作者Wen, Chengyan1; Lu, Luying2; Zhang, Xinghua1; Jin, Ke2; Chen, Lungang1; Zhang, Qi1; Ma, Longlong1; Wang, Chenguang2
刊名FUEL
出版日期2024-02-01
卷号357页码:10
关键词Syngas to aromatics Iron-based/zeolite catalyst Hierarchical zeolite Mesoporosity Mesopore size
ISSN号0016-2361
DOI10.1016/j.fuel.2023.129791
通讯作者Zhang, Xinghua(zhangxh@seu.edu.cn) ; Ma, Longlong(mall@seu.edu.cn)
英文摘要The utilization of iron-based/ZSM-5 bifunctional catalysts for converting syngas to aromatics (STA) has garnered significant interest because of its cost-effectiveness. This study aims to elucidate the regulatory mechanism of zeolitic pore structure on the performance of the bifunctional catalyst in STA reaction. The relationship among the mesoporosity and mesoporous diameter of hierarchical ZSM-5 zeolite component, product distribution, and catalyst stability is investigated through a range of analyses techniques, including XRD, SEM, TG, Raman, N2adsorption and desorption. The results demonstrate that as the mesoporosity of zeolite increased to 78.9%, the lifetime of the iron-based/ZSM-5 bifunctional catalyst extended beyond 96 h and maintained the aromatics selectivity over 40% at 2 MPa, 320 degrees C, and 3000 h-1. This outcome can be attributed to the role of high mesoporosity in restraining coke formation in zeolites. Moreover, the reduction in mesopore size from 11.1 to 5.8 nm results in an increased aromatics selectivity from 39.6% to 43.4%, and the fraction of light aromatics rose from 48.8% to 54.5%, indicating that small mesopore size can also expedite the production of aromatics, particularly light aromatics. It is thus concluded that the improvement of aromatics selectivity and stability of iron-based/ ZSM-5 bifunctional catalysts in STA reaction can be achieved by increasing the mesoporosity and decreasing the mesopore size of the zeolite component.
WOS关键词DIRECT TRANSFORMATION ; SELECTIVE CONVERSION ; ACID SITES ; ZSM-5 ; MESOPOROSITY ; SUPPORT ; METHANOL ; SURFACE ; GAS
资助项目Natural Science Foundation of China[52236010] ; Academician and Expert Workstation of Yunnan Province, China[202205AF150024] ; Jiangsu Provincial Double-Innovation Doctor Program[JSSCBS20220178] ; Fundamental Research Funds for the Central Universities[2242022R10058] ; Key Technologies R & D Program of Guangdong Province[2020B1111570001]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:001082056200001
出版者ELSEVIER SCI LTD
资助机构Natural Science Foundation of China ; Academician and Expert Workstation of Yunnan Province, China ; Jiangsu Provincial Double-Innovation Doctor Program ; Fundamental Research Funds for the Central Universities ; Key Technologies R & D Program of Guangdong Province
源URL[http://ir.giec.ac.cn/handle/344007/39967]  
专题中国科学院广州能源研究所
通讯作者Zhang, Xinghua; Ma, Longlong
作者单位1.Southeast Univ, Sch Energy & Environm, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Wen, Chengyan,Lu, Luying,Zhang, Xinghua,et al. Optimizing zeolitic hierarchical pore structure to boost the direct conversion of aromatics from syngas over the iron-based/zeolite bifunctional catalysts[J]. FUEL,2024,357:10.
APA Wen, Chengyan.,Lu, Luying.,Zhang, Xinghua.,Jin, Ke.,Chen, Lungang.,...&Wang, Chenguang.(2024).Optimizing zeolitic hierarchical pore structure to boost the direct conversion of aromatics from syngas over the iron-based/zeolite bifunctional catalysts.FUEL,357,10.
MLA Wen, Chengyan,et al."Optimizing zeolitic hierarchical pore structure to boost the direct conversion of aromatics from syngas over the iron-based/zeolite bifunctional catalysts".FUEL 357(2024):10.

入库方式： OAI收割

来源：广州能源研究所

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