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Hydrodeoxygenation of p-cresol on unsupported Ni–W–Mo–S catalysts prepared by one step hydrothermal method

Paper ID Volume ID Publish Year Pages File Format Full-Text
49419 46745 2014 6 PDF Available
Title
Hydrodeoxygenation of p-cresol on unsupported Ni–W–Mo–S catalysts prepared by one step hydrothermal method
Abstract

•Ni–Mo–W sulfide catalysts are prepared by one step hydrothermal method.•The effect of W/Mo molar ratio on the catalytic performance is studied.•Ni–Mo–W–S catalyst with a W/Mo molar ratio of 0.5 exhibits the highest HDO activity.•The p-cresol conversion is high (97.9%) with a deoxygenation rate of 97.56%.•The high HYD selectivity depends on the high proportion of corner sites.

Unsupported Ni–Mo–W sulfide catalysts were prepared by one step hydrothermal method using ammonium heptamolybdate and thiocarbamide in water, and characterized by X-ray diffraction (XRD), nitrogen physisorption and transmission electron microscopy (TEM). The effect of W/Mo molar ratio on the catalytic performance was studied using the HDO of p-cresol as a probe. The results showed that the Ni–Mo–W–S catalyst with an appropriate W/Mo molar ratio possesses the short slab length of MoS2 or WS2 structure and many active sites, leading to the high HDO activity and HYD selectivity.

Graphical abstractAdjusting the W/Mo molar ratio in the Ni–Mo–W–S catalysts could promote the dispersion of the active phases, leading to a high number of active site, and shorten the slab length of MoS2 structure, producing a high proportion of corner site. In the HDO of p-cresol, the activity and HYD selectivity of Ni–Mo–W–S catalysts depended on their active sites and the proportion of corner sites, respectively.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Ni–W–Mo sulfide catalyst; p-Cresol; Hydrodeoxygenation; Hydrothermal method; Bio-oilLGFKEAWXIFPSHL-UHFFFAOYSA-N
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Hydrodeoxygenation of p-cresol on unsupported Ni–W–Mo–S catalysts prepared by one step hydrothermal method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 56, 5 November 2014, Pages 17–22
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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
Online Support
Any Questions? feel free to contact us