已为您找到该学者11条结果 成果回收站
【期刊论文】n-Butane isomerization over Cs-salts of H3 PW12 O40: a mechanistic study by 1C MAS NMR
贺鹤勇, Zhuona Ma, Weiming Hua, Yu Ren, Heyong He, Zi Gao
Applied Catalysis A: General 256(2003)243-250,-0001,():
-1年11月30日
Reaction mechanism of skeletal isomerization of n-butane over Cs2.5H0.5P W12O40 catalyst was studied using 13C MAS NMR.The reaction proceeds mainly via a monomolecular mechanism at 80℃. The contribution of the bimolecular mechanism becomes more significant as the reaction temperature is increased to 150℃. Hydrogen suppresses the bimolecular mechanism, in particular on Pt-promoted Cs2. 5H0. 5P W12 O40 catalyst. The latter catalyst is highly selective to isobutane in the presence of H2 even at 220℃. The kinetics of the monomolecular isomerization reaction and the reaction schemes of 13C scrambling and n-butane isomerization are discussed.
Cs salts of H3 PW12O40, n-Butane isomerization, Reaction mechanism, 13C MAS NMR
-
40浏览
-
0点赞
-
0收藏
-
0分享
-
146下载
-
0
-
引用