Products Distribution in Methanol to Gasoline over HZSM-5 Catalysts with Different Si/Al Ratio

Advanced Materials Research (Volumes 550 - 553), Pages 109-113 (2012), DOI 10.4028/www.scientific.net/AMR.550-553.109
Products Distribution in Methanol to Gasoline over HZSM-5 Catalysts with Different Si/Al Ratio
Ling Jun Zhu, Shu Rong Wang, Xin Li, Qian Qian Yin, Xin Bao Li
Abstract
Reports a study of hydrocarbon fuels produced from methanol over HZSM-5 zeolite catalysts with various Si/Al ratios. Approximately 40% of hydrocarbon yield can be obtained under identical reaction conditions over the catalysts.
HZSM-5 catalyst with lower Si/Al ratio has slightly higher oil yield and less olefin content in gas products.  This is attributed to the stronger acidity in the catalyst favorable for the conversion of intermediates to aromatics. In addition, a small amount of dimethyl ether (DME) was detected when using HZSM-5 zeolite catalyst with Si/Al ratio of 38, which suggests that the intermediates from preliminary methanol reaction do not sufficiently convert.
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