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Effect of W addition on the hydrodeoxygenation of 4-methylphenol over unsupported NiMo sulfide catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
39765 45835 2014 7 PDF Available
Title
Effect of W addition on the hydrodeoxygenation of 4-methylphenol over unsupported NiMo sulfide catalysts
Abstract

•The XPS analysis revealed the successful synthesis of NiMoW sulfide catalysts.•The addition of tungsten influences the phase transformation of the nickel promoter.•The addition of tungsten generally enhances the DDO pathway.•The best function is obtained with a tungsten content of 0.33.

Unsupported NiMo sulfide catalysts modified by tungsten were prepared by a mechanical activation method. They were characterized by XRD, XPS, SEM, TEM and BET specific surface area measurements. The effect of tungsten promoter on the structure and catalytic performance was also discussed. The present work suggested that the addition of tungsten could greatly enhance the hydrodeoxygenation (HDO) activity, and promote the direct deoxygenation (DDO) pathway. Moreover, the addition content affects the mount of active NiMo(W)S phase, resulting in various functions.

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Keywords
Hydrodeoxygenation; 4-Methylphenol (4-MP); Promoter; Tungsten
First Page Preview
Effect of W addition on the hydrodeoxygenation of 4-methylphenol over unsupported NiMo sulfide catalysts
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 476, 22 April 2014, Pages 61–67
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis