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Effect of the template ion exchange behaviors of chromium into FSM-16 on the oxidative dehydrogenation of isobutaneEffect of the template ion exchange behaviors of chromium into FSM-16 on the oxidative dehydrogenation of isobutane |
"/Ehiro, Takuya/"Ehiro, Takuya ,
"/Itagaki, Ai/"Itagaki, Ai ,
"/Kurashina, Masashi/"Kurashina, Masashi ,
"/Katoh, Masahiro/"Katoh, Masahiro ,
"/Nakagawa, Keizo/"Nakagawa, Keizo ,
"/Katou, Yuuki/"Katou, Yuuki ,
"/Ninomiya, Wataru/"Ninomiya, Wataru ,
"/Sugiyama, Shigeru/"Sugiyama, Shigeru
123
(
1444
)
, pp.1084
-
1089 , 2015-12
ISSN:13486535
内容記述
The template ion exchange of chromium cations into FSM-16 (#16 Folded Sheets Mesoporous Materials) for 247 h resulted in a 2.89 wt% incorporation of those cations into the FSM-16, although only a 0.3 wt% incorporation had previously been reported. The XRD pattern of the resultant solid (Cr-FSM-16) showed that the hexagonal structure characteristic of FSM-16 remained after the 2.89 wt% incorporation of chromium cations. XPS could be used to detect the Cr3+ and Cr6+ species on the surface of Cr-FSM-16. A pre-edge peak that was due to a tetrahedrally coordinated Cr6+ species was confirmed in the XANES spectrum of the Cr-FSM-16, which showed that the coordination state around some Cr species was similar to that around the Si species in FSM-16. With the increase in the amount of chromium cations in FSM-16, its catalytic activity and stability during the oxidative dehydrogenation of isobutane were evidently improved.
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http://www.lib.tokushima-u.ac.jp/repository/file/109868/20160822155133/LID201608042005.pdf
