Characterization and Dehydrogenation Activity of SBA-15 and HMS Supported Chromia Catalysts

• 来源期刊: 中国化学(英文版)
• 年，卷（期）: 2002,（11）
• 页码范围: 1192-1198
• 页数: 7页
• 语种: 英文

摘要

SBA-15 and HMS supported chromia catalysts were prepared and characterized. Chromia is highly dispersed on the mesoporous supports when its loading is ≤7 wt%. The supported catalysts display high activity, selectivity and stability for dehydrogenation of ethyibenzene and propane. ESR measurement of the catalysts before and after reaction shows that the active species for dehydrogenation reaction might be Cr3 + species on the catalyst surface, and the activity of the catalyst is probably correlated with the dispersion of Cr3+ species.