ID 113241
Author
Kato, Yuki Mitsubishi Chemical Corporation
Nitta, Shinya Tokushima University
Shimazu, Sho Tokushima University
Ninomiya, Wataru Mitsubishi Chemical Corporation
Keywords
Oxidative dehydrogenation
Isobutane
Isobutene
MCM-48
Chromium
Content Type
Journal Article
Description
The catalytic performance of MCM-48 was greatly improved by the introduction of a small amount of chromium during the oxidative dehydrogenation of isobutane. Various characterization procedures such as XRD, N2 adsorption–desorption isotherms, TEM, NH3-TPD, XPS, and XAFS were used to identify the role that chromium played in the improvement, and XPS and XAFS results provided the most valuable information. Both measurements revealed that the chromium species existed as Cr6+ inside the framework of MCM-48 before oxidative dehydrogenation, but was reduced to Cr3+ during the reaction. The characteristic pore nature of MCM-48 also contributed to an enhancement of the selectivity to isobutene via the suppression of consecutive oxidation reactions.
Journal Title
Journal of Chemical Engineering of Japan
ISSN
00219592
NCID
AA00709658
Publisher
The Society of Chemical Engineers, Japan
Volume
52
Issue
1
Start Page
99
End Page
105
Published Date
2019-01-20
Rights
Copyright © 2019 The Society of Chemical Engineers, Japan
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Author
departments
Science and Technology