催化作用
化学
苯甲酸甲酯
选择性
反应性(心理学)
石墨烯
苯甲醇
甲醇
分子
吸附
酒
氧化磷酸化
有机化学
组合化学
材料科学
纳米技术
医学
替代医学
病理
生物化学
作者
Ruiyi Wang,Huan Liu,Chengyu Fan,Jie Gao,Cheng-Meng Chen,Zhanfeng Zheng
标识
DOI:10.1016/j.mcat.2019.110687
摘要
Direct selective oxidative esterification of readily available alcohols under mild conditions is an attractive approach to synthesis valuable esters. Developing high performance catalyst is the key factor to the efficient esters synthesis. We report graphene supported Au-Pd alloy catalyst exhibits excellent catalytic performance in the synthesis of methyl benzoate from benzyl alcohol and methanol, a turnover frequency (TOF) of 230 h−1 and selectivity of 100% to methyl benzoate were achieved under 1 atm O2 at 25 °C, which is superior to the majority of the state-of-the-art catalysts. Experimentally observed volcano-like reactivity trends and DFT calculations prove the outstanding performance was mainly ascribed to unique electronic structures of AuPd alloy catalyst for the adsorption and activation of reactant molecules. The catalytic reaction mechanism for interpretation of the structure-activity relationships of various catalysts at molecular level was investigated. The present study could help to unravel the synergistic effect of Au-Pd catalyst and provides a mild and efficient route for synthesis high-value esters in terms of green and sustainable chemistry.
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