催化作用
选择性
热液循环
化学工程
化学
介孔材料
乙醇
水热合成
空间速度
1,3-丁二烯
材料科学
有机化学
工程类
作者
Kangzhou Wang,Lisheng Guo,Weizhe Gao,Baizhang Zhang,Heng Zhao,Jiaming Liang,Na Liu,Yingluo He,Peipei Zhang,Guohui Yang,Noritatsu Tsubaki
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2021-07-24
卷期号:9 (31): 10569-10578
被引量:15
标识
DOI:10.1021/acssuschemeng.1c02630
摘要
The direct conversion of ethanol to butadiene (ETB) is a promising approach for renewable butadiene production. However, simultaneous achievement of high butadiene selectivity and catalyst stability has always been a challenge. Here, the multifunctional ZnZrTUD-1 catalyst possesses both superior catalytic performance and stability in direct ETB conversion. To study the effect of the active centers of catalysts on the catalytic performance, the designed active centers of the catalysts were optimized and further characterized by multiple techniques. One-pot hydrothermal synthesis was utilized to improve the interaction among ZnO, ZrO2, and TUD-1 mesoporous silicate. The results demonstrated that the optimized ZnZrTUD-1 catalyst possessed an excellent ability of resistance to carbon deposition and exhibited a synergistic catalysis effect. When the reaction was conducted at 400 °C and a weight hourly space velocity of 0.38 h–1, the catalytic performance revealed that it generated an outstanding butadiene selectivity of 62.5% and an ethanol conversion of 84.6%, which still remained stable during 50 h on stream.
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