文献类型：期刊文献

英文题名：Impacts of Alumina Introduction on a Pt-SO4/ZrO2 Catalyst in Light Naphtha Isomerization

作者：Zhou, Sinong[1];Song, Yueqin[1];Zhao, Jigang[1];Zhou, Xiaolong[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：3

起止页码：1285

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20220611586181);WOS:【SCI-EXPANDED(收录号:WOS:000752572000001)】；

语种：英文

外文关键词：Zirconia - Aluminum oxide - Isomers - Catalysts - Hexane - Reusability - Stability - Alumina

摘要：Alumina-promoted Pt-SO4/ZrO2 catalysts (termed as PtSZAI) with excellent stability were prepared for isomerization. In the present work, the impacts of alumina on structure, surface properties, isomerization activity, and stability were investigated. The results of characterizations showed that alumina introduction improved the stability of tetragonal zirconia and increased the pore volume and the Brunauer-Emmett-Teller surface area. In addition, alumina also improved the water capacity of the catalyst, which contributed to better stability when the moisture content in the feed was high. The long-term life test was evaluated by n-hexane and reforming topping oil in about 1000 h. The conversion of n-hexane was higher than 90%, and the research octane number of reforming topping oil was increased from 62.8 to 79.3. Moreover, the used catalyst was regenerated nine times and the activity was almost not reduced, which proved that the reusability of PtSZAI catalysts was perfect.