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

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

In this study, the characterization of In-exchanged CHA zeolite (In-CHA (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 22.3)) was conducted by in-situ X-ray diffraction (XRD) and ammonia temperature-programmed desorption (NH<sub>3</sub>-TPD). We also p...

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Main Authors: Zen Maeno, Xiaopeng Wu, Shunsaku Yasumura, Takashi Toyao, Yasuharu Kanda, Ken-ichi Shimizu
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Catalysts
Subjects:
In-exchanged zeolite
reductive solid-state ion-exchange (RSSIE)
ethane dehydrogenation
isolated surface hydride
Online Access:https://www.mdpi.com/2073-4344/10/7/807
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spelling doaj-38a10e7e38154e4498d773f6a854c0792020-11-25T02:58:44ZengMDPI AGCatalysts2073-43442020-07-011080780710.3390/catal10070807In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework TypeZen Maeno0Xiaopeng Wu1Shunsaku Yasumura2Takashi Toyao3Yasuharu Kanda4Ken-ichi Shimizu5Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, JapanInstitute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, JapanInstitute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, JapanInstitute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, JapanApplied Chemistry Research Unit, College of Environmental Technology, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, JapanInstitute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, JapanIn this study, the characterization of In-exchanged CHA zeolite (In-CHA (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 22.3)) was conducted by in-situ X-ray diffraction (XRD) and ammonia temperature-programmed desorption (NH<sub>3</sub>-TPD). We also prepared other In-exchanged zeolites with different zeolite structures (In-MFI (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 22.3), In-MOR (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 20), and In-BEA (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 25)) and different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios (In-CHA(Al-rich) (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 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, [InH<sub>2</sub>]<sup>+</sup> ions are formed regardless of SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratio, serving as the active sites.https://www.mdpi.com/2073-4344/10/7/807In-exchanged zeolitereductive solid-state ion-exchange (RSSIE)ethane dehydrogenationisolated surface hydride
collection DOAJ
language English
format Article
sources DOAJ
author Zen Maeno
Xiaopeng Wu
Shunsaku Yasumura
Takashi Toyao
Yasuharu Kanda
Ken-ichi Shimizu
spellingShingle Zen Maeno
Xiaopeng Wu
Shunsaku Yasumura
Takashi Toyao
Yasuharu Kanda
Ken-ichi Shimizu
In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type
Catalysts
In-exchanged zeolite
reductive solid-state ion-exchange (RSSIE)
ethane dehydrogenation
isolated surface hydride
author_facet Zen Maeno
Xiaopeng Wu
Shunsaku Yasumura
Takashi Toyao
Yasuharu Kanda
Ken-ichi Shimizu
author_sort Zen Maeno
title In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type
title_short In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type
title_full In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type
title_fullStr In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type
title_full_unstemmed In-Exchanged CHA Zeolites for Selective Dehydrogenation of Ethane: Characterization and Effect of Zeolite Framework Type
title_sort in-exchanged cha zeolites for selective dehydrogenation of ethane: characterization and effect of zeolite framework type
publisher MDPI AG
series Catalysts
issn 2073-4344
publishDate 2020-07-01
description In this study, the characterization of In-exchanged CHA zeolite (In-CHA (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 22.3)) was conducted by in-situ X-ray diffraction (XRD) and ammonia temperature-programmed desorption (NH<sub>3</sub>-TPD). We also prepared other In-exchanged zeolites with different zeolite structures (In-MFI (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 22.3), In-MOR (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 20), and In-BEA (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 25)) and different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios (In-CHA(Al-rich) (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 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, [InH<sub>2</sub>]<sup>+</sup> ions are formed regardless of SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratio, serving as the active sites.
topic In-exchanged zeolite
reductive solid-state ion-exchange (RSSIE)
ethane dehydrogenation
isolated surface hydride
url https://www.mdpi.com/2073-4344/10/7/807
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AT takashitoyao inexchangedchazeolitesforselectivedehydrogenationofethanecharacterizationandeffectofzeoliteframeworktype
AT yasuharukanda inexchangedchazeolitesforselectivedehydrogenationofethanecharacterizationandeffectofzeoliteframeworktype
AT kenichishimizu inexchangedchazeolitesforselectivedehydrogenationofethanecharacterizationandeffectofzeoliteframeworktype
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