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In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type

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Title: In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type
Authors: Maeno, Zen Browse this author →KAKEN DB
Wu, Xiaopeng Browse this author
Yasumura, Shunsaku Browse this author
Toyao, Takashi Browse this author →KAKEN DB
Kanda, Yasuharu Browse this author
Shimizu, Ken-ichi Browse this author →KAKEN DB
Keywords: In-exchanged zeolite
reductive solid-state ion-exchange (RSSIE)
ethane dehydrogenation
isolated surface hydride
Issue Date: Jul-2020
Publisher: MDPI
Journal Title: Catalysts
Volume: 10
Issue: 7
Start Page: 807
Publisher DOI: 10.3390/catal10070807
Abstract: In this study, the characterization of In-exchanged CHA zeolite (In-CHA (SiO2/Al2O3= 22.3)) was conducted by in-situ X-ray diffraction (XRD) and ammonia temperature-programmed desorption (NH3-TPD). We also prepared other In-exchanged zeolites with different zeolite structures (In-MFI (SiO2/Al2O3= 22.3), In-MOR (SiO2/Al2O3= 20), and In-BEA (SiO2/Al2O3= 25)) and different SiO2/Al(2)O(3)ratios (In-CHA(Al-rich) (SiO2/Al2O3= 13.7)). Their catalytic activities in nonoxidative ethane dehydrogenation were compared. Among the tested catalysts, In-CHA(Al-rich) provided the highest conversion. From kinetic experiments and in-situ Fourier transform infrared (FTIR) spectroscopy, [InH2](+)ions are formed regardless of SiO2/Al(2)O(3)ratio, serving as the active sites.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/79160
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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