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Effect of silica on the selective oxidation of methanol to dimethoxymethane over vanadia–titania catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
51831 46855 2009 4 PDF Available
Title
Effect of silica on the selective oxidation of methanol to dimethoxymethane over vanadia–titania catalysts
Abstract

V–Ti–O oxides with about 4% sulfate were prepared by a co-precipitation method, which showed strong surface acidic and redox properties, and therefore exhibited good performance for the selective oxidation of methanol to dimethoxymethane (DMM) at relatively low reaction temperatures (e.g., 443 K). However, the selectivity to DMM substantially decreased when reaction temperature increased to higher than 453 K. Addition of SiO2 significantly weakened the surface acidity and redox ability of V–Ti–O, and significantly improved the selectivity to DMM above 453 K. Ninety-three percentage selectivity to DMM with 66% conversion of methanol was obtained over a Si–V–Ti–O catalyst at 483 K.

Keywords
V–Ti–O catalysts; SiO2 dopant; Surface acidic and redox properties; Selective oxidation of methanol; Synthesis of dimethoxymethane
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Effect of silica on the selective oxidation of methanol to dimethoxymethane over vanadia–titania catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 1, 10 October 2009, Pages 47–50
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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