Ce doping promote the selective conversion of ethanol to ethyl acetate via the dehydrogenation-condensation over CuCeZr catalyst
Ce doping promote the selective conversion of ethanol to ethyl acetate via the dehydrogenation-condensation over CuCeZr catalyst
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DOI：
10.1016/j.jcat.2023.06.030
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发表时间：
2023-06
影响因子：
7.3
通讯作者：
Yuda Zhang;Yehong Wang;Xian Guan;Huixiang Li;Xuezhong Nie;Yafei Liang;Xiaolei Bao;Xiaoqiang Li;Feng Wang
中科院分区：
文献类型：
--
作者：
Yuda Zhang;Yehong Wang;Xian Guan;Huixiang Li;Xuezhong Nie;Yafei Liang;Xiaolei Bao;Xiaoqiang Li;Feng Wang
Ethyl acetate, as an important organic solvent, can be produced via ethanol dehydrogenation-condensation route with 96% atomic economy and environmental friendliness. Although CuZr-based catalysts have been widely used in this reaction, high ethyl acetate selectivity with satisfied ethanol conversion remains a great challenge. Herein, an efficient CuCeZr solid solution catalyst is developed and realize the selective synthesis of ethyl acetate from ethanol. The CuCeZr catalyst with 10 wt% Ce doping shows the highest selectivity (87.5%) and 55.9% ethanol conversion, which is superior to other reported CuZr-based catalysts. A 1000 h continuous life-test result indicates an excellent stability of CuCeZr catalyst. The characterization and reaction results suggest that the Ce doping enhanced the formation of Cu (I) species to improve the selectivity of ethyl acetate. Moreover, it decreases the amount of strong acid-base sites, which suppresses the self-condensation of acetaldehyde and dehydration process, reducing the production of C4 by-products.
