Methanol to propylene: Effect of phosphorus on a high silica HZSM-5 catalyst

Modified high silica HZSM-5 catalysts have been used to selectively transform methanol to propylene (MTP). The HZSM-5 catalyst with a Si/Al ratio of 220 exhibited satisfying catalytic performance (space time yield of propylene is up to 18 mmol/gh). The selectivity of propylene can be obviously affec...

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Bibliographic Details
Published in:Catalysis communications 2009-06, Vol.10 (11), p.1506-1509
Main Authors: Liu, Jian, Zhang, Chenxi, Shen, Zhenhao, Hua, Weiming, Tang, Yi, Shen, Wei, Yue, Yinghong, Xu, Hualong
Format: Article
Language:English
Subjects:
High silica HZSM-5
Methanol
Methanol to propylene (MTP)
Phosphorus
Promoters
Propylene
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Summary:Modified high silica HZSM-5 catalysts have been used to selectively transform methanol to propylene (MTP). The HZSM-5 catalyst with a Si/Al ratio of 220 exhibited satisfying catalytic performance (space time yield of propylene is up to 18 mmol/gh). The selectivity of propylene can be obviously affected by additives. P leads to a pronounced improvement of propylene selectivity up to 55.6% with complete conversion of methanol. The enhancement of propylene selectivity and catalytic life can be attributed to partial elimination of the strong acid sites on the HZSM-5 catalyst.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2009.04.004