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Extrusion of zeolites: Properties of catalysts with a novel aluminium phosphate sintermatrix

Paper ID Volume ID Publish Year Pages File Format Full-Text
43551 45976 2007 9 PDF Available
Title
Extrusion of zeolites: Properties of catalysts with a novel aluminium phosphate sintermatrix
Abstract

A novel type of mechanically strong zeolite extrudates is introduced, in which the zeolite crystals, here ZSM-5, are embedded in a sintermatrix of aluminium phosphate with the crystal structure of tridymite. The pore size distribution in the matrix can be tailored through both, the choice of the size of the embedded particles and their amount in the extrudates. At zeolite concentrations of 50% (w/w) or higher, the mean pore diameter of the matrix (Dpore) depends on the zeolite crystal size only, and amounts to Dpore ≈ 0.25Dparticle. Other than conventional matrices on alumina basis, the AlPO4 matrix does neither provide catalytic self-activity, nor does cause any alumination of the zeolite framework.

Graphical abstractA novel type of strong zeolite extrudates is introduced, in which the zeolite crystals are embedded in a sintermatrix of AlPO4 with tridymite structure. The pore size distribution can be tailored through choice of the size of the embedded particles and their amount in the extrudates. Other than alumina matrices, the AlPO4 matrix does neither provide catalytic self-activity, nor does is cause alumination of the zeolite.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Extrusion; Aluminium phosphate; Zeolites; Alumination; Macropores
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Extrusion of zeolites: Properties of catalysts with a novel aluminium phosphate sintermatrix
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 328, Issue 2, 10 September 2007, Pages 210–218
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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