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A facile strategy for preparation of phosphorus modified HZSM-5 shape-selective catalysts and its performances in disproportionation of toluene

Paper ID Volume ID Publish Year Pages File Format Full-Text
49324 46736 2016 5 PDF Available
Title
A facile strategy for preparation of phosphorus modified HZSM-5 shape-selective catalysts and its performances in disproportionation of toluene
Abstract

•Phosphorus modified HZSM-5 prepared by impregnation with the addition of ethanol•Excellent performance was obtained in disproportionation of toluene.•The addition of ethanol promotes the transition of phosphoric acid to phosphate.

The phosphorous modified HZSM-5 catalysts were prepared by using phosphoric acid as the precursor with the addition of ethanol during the impregnation process and their shape-selective performances in the synthesis of p-xylene by disproportionation of toluene were investigated. An excellent para-selectivity along with a relatively high catalytic activity was achieved over the phosphorous modified HZSM-5 catalysts. The addition of ethanol during the impregnation process promotes the transition of phosphoric acid to phosphate, which accomplished the cover of the external acid sites and the reserve of the acid sites in the pores of HZSM-5 zeolite after phosphorous modification.

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Keywords
Toluene disproportionation; Shape-selective catalysis; Phosphorous; HZSM-5
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A facile strategy for preparation of phosphorus modified HZSM-5 shape-selective catalysts and its performances in disproportionation of toluene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 77, 5 March 2016, Pages 60–64
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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