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Synthesis of gasoline-range hydrocarbons over Mo/HZSM-5 catalysts ☆

Paper ID Volume ID Publish Year Pages File Format Full-Text
42410 45924 2009 8 PDF Available
Title
Synthesis of gasoline-range hydrocarbons over Mo/HZSM-5 catalysts ☆
Abstract

Mo/HZSM-5 has been found active in Fischer–Tropsch synthesis (FTS). The catalysts were evaluated under various reaction conditions with low H2/CO (molar ratio ∼1.0) syngas typical of a synthesis gas derived from biomass gasification. Liquid hydrocarbons formed on the Mo/HZSM-5 were composed mainly of alkyl-substituted aromatics and lower branched and cyclized alkanes. Aliphatic hydrocarbons were detected only in trace amounts. Lower hydrocarbons produced included mainly methane, ethane, propane and iso-butane. Higher alcohols and carboxylic acids (C1–C6) were detected in the water phase liquids from FTS. It is supposed that the formation of hydrocarbons on Mo/zeolite is through bifunctional-zeolite acidity and molybdenum metal catalysis via mixed alcohols as the intermediates. Investigation on the effects of zeolite structure indicated that zeolite Y is also an excellent support for Mo in the FTS.

Graphical abstractMo/HZSM-5 has been found active for syngas conversion to gasoline-range hydrocarbons mainly composed of alkyl-substituted aromatics and lower branched and cyclized alkanes. Higher alcohols and carboxylic acids (C1–C6) were detected in the water phase liquids from the synthetic reaction. The formation of hydrocarbons on Mo/zeolite is through bifunctional-zeolite acidity and molybdenum metal catalysis via mixed alcohols as the intermediates.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Fischer–Tropsch synthesis; Branched alkanes; Aromatics; Mo/HZSM-5; Zeolite Y; Syngas; Biomass gasification
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Synthesis of gasoline-range hydrocarbons over Mo/HZSM-5 catalysts ☆
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 357, Issue 1, 31 March 2009, Pages 18–25
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis