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Synergistic effects of tungsten and phosphorus on catalytic cracking of butene to propene over HZSM-5

Paper ID Volume ID Publish Year Pages File Format Full-Text
43158 45957 2009 8 PDF Available
Title
Synergistic effects of tungsten and phosphorus on catalytic cracking of butene to propene over HZSM-5
Abstract

Synergistic catalysis effects among tungsten, phosphorus and HZSM-5 on 1-butene cracking to propene and ethene have been demonstrated by catalytic tests. The tungsten–phosphorus-modified HZSM-5 (W–P/HZSM-5) catalyst, with very low density of acid sites, offers a fairly high conversion rate of butene and selectivity to propene. The status of doped tungsten is characterized by using techniques of D2/OH exchange, NH3 adsorption microcalorimetry, FT-IR spectroscopy, Raman spectroscopy, N2 adsorption and X-ray photoelectron spectroscopy. The tungsten would be monotungstate that interacted with phosphorus before steam treatment and partly congregated to polytungstate species during steaming process at high temperature. The enhanced performance of the catalyst for 1-butene cracking to propene and ethene can be correlated to the synergistic effect between the doped tungsten and phosphorous on the reaction network of the cracking process. The W–P/HZSM-5 is a promising catalyst for the 1-butene cracking to propene and ethene.

Graphical abstractThe results of catalytic tests and spectroscopic characterization have been demonstrated that the synergistic effects among the doped tungsten, phosphorous and HZSM-5 cause increased cracking rates of 1-butene to propene on tungsten–phosphorus-modified HZSM-5 (W–P/HZSM-5), which is a promising catalyst for the cracking of butene to propene and ethene.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
HZSM-5; Tungsten; 1-Butene cracking; D2/OH exchange; Microcalorimetry
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Synergistic effects of tungsten and phosphorus on catalytic cracking of butene to propene over HZSM-5
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 352, Issues 1–2, 15 January 2009, Pages 87–94
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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