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Transient Bronsted Acid Sites in Propene Aromatization over Zn-Modified HZSM-5 Detected by Operando Dual-Beam FTIR

文献类型：期刊论文

作者He, Ning1,3; Guo, Hongchen1,3; Liu, Jiaxu1,3; Lin, Long1,3; Wang, Jilei1,3; Zhou, Wei1,3; Miao, Cuilan1,3; Liu, Chunyan1,3; Xin, Qin2
刊名JOURNAL OF PHYSICAL CHEMISTRY C
出版日期2019-03-28
卷号123期号:12页码:7283-7289
ISSN号1932-7447
DOI10.1021/acs.jpcc.9b01415
通讯作者Guo, Hongchen(hongchenguo@dlut.edu.cn)
英文摘要An operando dual-beam Fourier transform infrared spectrometer was developed to identify the transient Bronsted acid sites (BAS) in propene aromatization over acidic HZSM-5 and Zn-modified HZSM-5 catalysts under real reaction conditions. The eliminated signals include gas-phase I molecular vibrations and heat irradiation at reaction temperatures. We directly observed that the initial activation of propene over Zn2+ of Zn-modified HZSM-5 generated a substantial number of transient BAS, which serve as active sites for the subsequent aromatization reactions. Moreover, during Transient Bronsted Acid Sites the propene aromatization process, the desorption of aromatic precursors over the Zn2+ of Zn/HZSM-5 is easier than that over the H+ of HZSM-5, resulting in an enhanced aromatics productivity. A density functional theory calculation certified the priority of the metallic Zn2+ sites over BAS in the competitive activation of propene molecules. The generation of transient BAS is energetically favorable.
WOS关键词PROPANE AROMATIZATION ; ACTIVATION ; CATALYSIS ; CATIONS
资助项目National Natural Science Foundation of China[21603023] ; Joint Fund Project of NSFC-Liaoning Province[U1508205]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000463115500037
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Fund Project of NSFC-Liaoning Province ; Joint Fund Project of NSFC-Liaoning Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Fund Project of NSFC-Liaoning Province ; Joint Fund Project of NSFC-Liaoning Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Fund Project of NSFC-Liaoning Province ; Joint Fund Project of NSFC-Liaoning Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Fund Project of NSFC-Liaoning Province ; Joint Fund Project of NSFC-Liaoning Province
源URL[http://cas-ir.dicp.ac.cn/handle/321008/165580]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Guo, Hongchen
作者单位1.Dalian Univ Technol, State Key Lab Fine Chem, 2 Linggong Rd, Dalian 116024, Peoples R China
2.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Dalian Univ Technol, Sch Chem Engn, 2 Linggong Rd, Dalian 116024, Peoples R China
推荐引用方式
GB/T 7714		 He, Ning,Guo, Hongchen,Liu, Jiaxu,et al. Transient Bronsted Acid Sites in Propene Aromatization over Zn-Modified HZSM-5 Detected by Operando Dual-Beam FTIR[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(12):7283-7289.
APA He, Ning.,Guo, Hongchen.,Liu, Jiaxu.,Lin, Long.,Wang, Jilei.,...&Xin, Qin.(2019).Transient Bronsted Acid Sites in Propene Aromatization over Zn-Modified HZSM-5 Detected by Operando Dual-Beam FTIR.JOURNAL OF PHYSICAL CHEMISTRY C,123(12),7283-7289.
MLA He, Ning,et al."Transient Bronsted Acid Sites in Propene Aromatization over Zn-Modified HZSM-5 Detected by Operando Dual-Beam FTIR".JOURNAL OF PHYSICAL CHEMISTRY C 123.12(2019):7283-7289.

入库方式： OAI收割

来源：大连化学物理研究所

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