DICP OpenIR
Operando dual beam FTIR spectroscopy unravels the promotional effect of Zn on HZSM-5 in iso-butane aromatization
Liu, Jiaxu1,2; He, Ning1,2; Zhou, Wei1,2; Shu, Miao3; Lin, Long1,2; Wang, Jilei1,2; Si, Rui3; Xiong, Guang1,2; Xin, Qin4; Guo, Hongchen1,2
Corresponding AuthorGuo, Hongchen(hongchenguo@dlut.edu.cn)
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
2019-04-07
ISSN2044-4753
DOI10.1039/c9cy00136k
Volume9Issue:7Pages:1609-1620
Funding ProjectNational Natural Science Foundation of China[21603023] ; Dalian high level talent innovation support program[2017RQ011]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordZSM-5 ZEOLITES ; PROPANE AROMATIZATION ; LIGHT ALKANES ; TRANSFORMATION ; ACTIVATION ; CATALYSTS ; ETHANE ; ACID ; HYDROCARBONS ; ZN/HZSM-5
AbstractAlthough zinc-promoted HZSM-5 catalysts have been widely used in the aromatization of short-chain hydrocarbons, the precise role of Zn in catalysis is still unclear due to the complex reaction mechanism and the lack of in situ or operando techniques. A home-built dual beam Fourier transform infrared (DB-FTIR) spectrometer, designed to eliminate the interference of gas-phase molecular vibration and heat irradiation through collecting reference and sample spectra simultaneously, can present an unimpeded view of the dynamic surface processes involved in gas/solid heterogeneous catalysis under real reaction conditions. With the aid of the DB-FTIR spectrometer, we directly observed the reaction process of iso-butane aromatization over HZSM-5 and Zn/HZSM-5. Unlike conventional studies, the aromatization was firstly performed under sub-atmospheric pressures using a home-built fixed-bed reactor. Comprehensive characterization results demonstrate that, besides their good dehydrogenation abilities, Zn species undergo strong interactions with olefin intermediates, even at sub-atmospheric pressures, but weaker interaction (or adsorption) with final aromatic products. Density functional theory studies certify that strong interactions could inhibit the desorption of olefin intermediates, which is beneficial for secondary chain-growth reactions relating to aromatics.
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian high level talent innovation support program ; Dalian high level talent innovation support program
WOS IDWOS:000463950800005
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165649
Collection中国科学院大连化学物理研究所
Corresponding AuthorGuo, Hongchen
Affiliation1.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Chem Engn, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
4.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jiaxu,He, Ning,Zhou, Wei,et al. Operando dual beam FTIR spectroscopy unravels the promotional effect of Zn on HZSM-5 in iso-butane aromatization[J]. CATALYSIS SCIENCE & TECHNOLOGY,2019,9(7):1609-1620.
APA Liu, Jiaxu.,He, Ning.,Zhou, Wei.,Shu, Miao.,Lin, Long.,...&Guo, Hongchen.(2019).Operando dual beam FTIR spectroscopy unravels the promotional effect of Zn on HZSM-5 in iso-butane aromatization.CATALYSIS SCIENCE & TECHNOLOGY,9(7),1609-1620.
MLA Liu, Jiaxu,et al."Operando dual beam FTIR spectroscopy unravels the promotional effect of Zn on HZSM-5 in iso-butane aromatization".CATALYSIS SCIENCE & TECHNOLOGY 9.7(2019):1609-1620.
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