Mechanistic aspects of hydrodeoxygenation of p-methylguaiacol over Rh/silica and Pt/silica

Bouxin, F. P., Zhang, X., Kings, I. N., Lee, A. F., Simmons, M. J.H., Wilson, K. and Jackson, S. D. (2018) Mechanistic aspects of hydrodeoxygenation of p-methylguaiacol over Rh/silica and Pt/silica. Organic Process Research and Development, 22, pp. 1586-1589. (doi: 10.1021/acs.oprd.8b00211)

Abstract

The mechanism of p-methylguaiacol (PMG) hydrodeoxygenation (HDO) has been examined over two Rh/silica catalysts and a Pt/silica catalyst at 300 °C and 4 barg hydrogen. Sequential conversion of PMG to 4-methylcatechol is followed by m- and p-cresol formation and finally toluene production, although direct conversion of PMG to p-cresol is favored over a commercial Rh/silica catalyst. Dehydroxylation and hydrogenation are shown to occur over metal functions, while demethylation and demethoxylation are favored over the fumed silica support. A mechanistic pathway for HDO of PMG is proposed.

• Item Type: Articles
• Additional Information: The UK Catalysis Hub is kindly thanked for resources and support provided via our membership in the UK Catalysis Hub Consortium and funded by EPSRC (Grants EP/K014706/1, EP/K014668/1, EP/K014854/1, EP/K014714/1, and EP/ M013219/1).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Bouxin, Dr Florent and Jackson, Professor David
• Authors: Bouxin, F. P., Zhang, X., Kings, I. N., Lee, A. F., Simmons, M. J.H., Wilson, K., and Jackson, S. D.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Organic Process Research and Development
• Publisher: American Chemical Society
• ISSN: 1083-6160
• ISSN (Online): 1520-586X
• Published Online: 29 August 2018
• Copyright Holders: Copyright © 2018 American Chemical Society
• First Published: First published in Organic Process Research and Development 22:1586-1589
• Publisher Policy: Reproduced under a Creative Commons License

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
65418	1	Catalytic HDO (UK Catalysis hub)	Samuel Jackson	Engineering and Physical Sciences Research Council (EPSRC)	EP/K014706/1	CHEM - CHEMISTRY
65289	1	Towards closing the chlorine cycle in large-scale chemical manufacturing processes (UK Catalysis hub)	David Lennon	Engineering and Physical Sciences Research Council (EPSRC)	EP/K014854/1	CHEM - CHEMISTRY