Hydrophobic Modification of Microenvironment of Highly Dispersed Co3O4 Nanoparticles for the Catalytic Selective Oxidation of Ethylbenzene
Hydrophobic Modification of Microenvironment of Highly Dispersed Co3O4 Nanoparticles for the Catalytic Selective Oxidation of Ethylbenzene
复制标题
高分散Co3O4纳米粒子微环境的疏水改性用于催化选择性氧化乙苯
DOI：
10.1002/cctc.201901771
复制
发表时间：
2020-02
期刊：
影响因子：
4.5
通讯作者：
jiexu
中科院分区：
文献类型：
--
作者：
lizhao;songshi;mengliu;guozhizhu;chenchen;jingao;jiexu
Microenvironments in enzymes play crucial roles in controlling the activities of active centers. Here, hexagonal mesoporous silicas (HMS) with hydrophobic microenvironment was used to mimic the enzymes on the hydrocarbon oxidation with cobalt oxides incorporated as active sites. The variation of the structure and surface properties of the materials with phenyl group incorporation and the state of the supported cobalt oxides were carefully studied. It showed that cobalt oxides presented as Co3O4 distributed evenly among the support, and the catalytic microenvironment was modified by the neighboring phenyl groups to be hydrophobic. This novel catalyst showed enhancement in the adsorption of ethylbenzene and in turn promoted the catalytic conversion than the hydrophilic one. 55.1 % conversion of ethylbenzene and 86.1 % selectivity for acetophenone could be obtained at 393 K for 6 h under 1.0 MPa of O2 with free solvent. Hydrophobic microenvironment of pore surface was considered as an important factor for the better catalytic activity.
登录
查看更多内容
影响因子：
7.3
作者：
S. Jana;Peng Wu;T. Tatsumi
通讯作者：
S. Jana;Peng Wu;T. Tatsumi
影响因子：
7.2
作者：
D. Owens;A. Han;Luyi Sun;Yuanbing Mao
通讯作者：
D. Owens;A. Han;Luyi Sun;Yuanbing Mao
影响因子：
--
作者：
Zhang Q;Chen C;Wang M;Cai J;Xu J;Xia C
通讯作者：
Xia C
影响因子：
4.4
作者：
CLOUGH, SA;BEERS, Y;ROTHMAN, LS
通讯作者：
ROTHMAN, LS
影响因子：
10.9
作者：
Cossarutto, L;Zimny, T;Weber, JV
通讯作者：
Weber, JV