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The preparation of active WO3 catalysts for metathesis between ethene and 2-butene under moist atmosphere

Paper ID Volume ID Publish Year Pages File Format Full-Text
52947 46892 2009 5 PDF Available
Title
The preparation of active WO3 catalysts for metathesis between ethene and 2-butene under moist atmosphere
Abstract

Moist atmosphere was employed for the preparation of WO3/Al2O3/HY catalysts (under thermal spread condition) for the metathesis between ethene and 2-butene to propene. The transformation of tungsten oxide species was characterized by XRD, UV–Vis spectra and UV resonance Raman techniques. Compared with the 18 h calcination time under commonly dry atmosphere at 600 °C, moist atmosphere accelerates the transformation of bulk WO3 to surface oxide, and shortens the calcination time to 4 h for highly active catalyst, which also shows better stability for the metathesis reaction at 0.1 MPa and 180 °C. The HY/Al2O3 binary support still displays the synergetic effect for the formation of active site precursors of tetrahedral tungsten oxide species, which exhibit a characteristic Raman band at ∼970 cm−1.

Keywords
Metathesis; Propene; WO3; Moist atmosphere; HY/Al2O3 support
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The preparation of active WO3 catalysts for metathesis between ethene and 2-butene under moist atmosphere
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 5, 25 January 2009, Pages 544–548
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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