Publisher: American Chemical Society (ACS)

Issue: 12

License: http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html

Publication date(s): 2018/12/21 (print) 2018/08/29 (online)

Pages: 1586-1589

Volume: 22 Issue: 12

Journal: Organic Process Research & Development

Link: http://pubs.acs.org/doi/pdf/10.1021/acs.oprd.8b00211

URL: http://dx.doi.org/10.1021/acs.oprd.8b00211

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.

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