Oxidative esterification of acetol with methanol to methyl pyruvate over hydroxyapatite supported gold catalyst: Essential roles of acid-base properties
| Autor: | Jingdong Lin, Xianchi Lei, Yan Wan, Shaolong Wan, Jinhan Lin, Yong Wang, Wenda Hu, Congcong Zheng, Mengqi Zhuang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Chemistry
02 engineering and technology General Medicine 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound Cannizzaro reaction Organic chemistry Fine chemical Acid–base reaction Methanol 0210 nano-technology Selectivity Pyrolysis Oxygenate |
| Zdroj: | Chinese Journal of Catalysis. 40:1810-1819 |
| ISSN: | 1872-2067 |
| DOI: | 10.1016/s1872-2067(19)63368-1 |
| Popis: | 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%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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