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- Title
The synthesis of new coke-resistant support and its application in propane dehydrogenation to propene.
- Authors
Zhou, Shijian; Zhou, Yuming; Zhang, Yiwei; Sheng, Xiaoli; Zhang, Zewu
- Abstract
BACKGROUND ZSM-5 zeolite has been used as a common support for PtSn-based catalyst in the propane dehydrogenation reaction. But owing to its high acidy, coke accommodation and stability of the catalyst are not satisfactory. Here, in order to improve the performance, the new hierarchical-porous ZSM-5 (abbreviated henceforth as ZQ) has been synthesized. RESULTS By the introduction of hierarchical-pores in ZQ, the pore structure was changed, the acid content was decreased, and the surface properties were promoted. These modifications to zeolite greatly improved the capacity of catalysts to accommodate coke. Moreover, the coke deposit on PtSnNa/ ZQ migrated from active metal to the support. As expected, by using the catalyst PtSnNa/ ZQ, the catalytic performance of propane dehydrogenation to propene and the stability of the catalyst were significantly promoted. CONCLUSIONS The new hierarchical-porous ZSM-5 support ( ZQ) exhibits enhanced capacity to accommodate coke, and PtSnNa/ ZQ enabled better propane conversion and improved catalyst stability. © 2015 Society of Chemical Industry
- Subjects
CHEMICAL synthesis; ZEOLITES; PLATINUM catalysts; COKE (Coal product); PROPANE; PROPENE; CATALYTIC dehydrogenation
- Publication
Journal of Chemical Technology & Biotechnology, 2016, Vol 91, Issue 4, p1072
- ISSN
0268-2575
- Publication type
Article
- DOI
10.1002/jctb.4686