Coke on HZSM-5/SAPO-34 Catalyst for Ethanol to Propylene

Abstract:

The catalytic performance on HZSM-5/SAPO-34 catalyst in ethanol to propylene was tested in continuous-flow fixed-bed reactor. Coke on HZSM-5/SAPO-34 catalyst for ethanol to propylene was studied by O₂-TPO, N₂ isothermal adsorption–desorption and NH₃-TPD.The result showed that the strong and medium acid sites were the active centers of coke deposition; Coke mainly deposited in mesoporous and some coke blocked microporous orifice; In the initial stage of reaction, the high yield of propylene may be benefited from coke deposition, which adjusted the acidity and structure of HZSM-5/SAPO-34.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 751-754
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.751
• Online since: June 2014
• Authors: Wang Feng, Bai Ting, Duan Chao, Wen Ting Qu, Xi Ling Liu, Zhang Xin*
• Keywords: Coke, Ethanol, HZSM-5/SAPO-34 Catalyst, Property, Propylene

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