Journal
CHINESE JOURNAL OF CATALYSIS
Volume 40, Issue 11, Pages 1810-1819Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(19)63368-1
Keywords
Acetol; Acid-base properties; Gold; Hydroxyapatite; Methyl pyruvate
Funding
- Major Research Plan of National Natural Science Foundation of China [91545114, 91545203]
- National Natural Science Foundations of China [21576227]
- 985 Program of the Chemistry and Chemical Engineering disciplines of Xiamen University
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Acetol is a major light oxygenate and readily produced from staged or fast pyrolysis of lignocellulose biomass. Herein we report that acetol can be selectively converted to methyl pyruvate, an important fine chemical, through oxidative esterification over Au-based catalysts. Detailed experimental studies showed that Au on amphoteric supports with appropriate strength and balanced ratio of acid and base sites can facilitate the desired oxidative-esterification pathway without accelerating undesired aldol-condensation or Cannizzaro reactions. In particular, hydroxyapatite (with a Ca/P ratio of 1.62) supported Au achieved 87% selectivity to methyl pyruvate at an acetol conversion of 62%. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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