Pore topology control of supported on mesoporous silicas copper and cerium oxide catalysts for ethyl acetate oxidation

被引：25

作者：

Tsoncheva, Tanya ^{[1
]}

Issa, Gloria ^{[1
]}

Lopez Nieto, Jose M. ^{[2
]}

Blasco, Teresa ^{[2
]}

Concepcion, Patricia ^{[2
]}

Dimitrov, Momtchil ^{[1
]}

Atanasova, Genoveva ^{[3
]}

Kovacheva, Daniela ^{[3
]}

机构：

[1] Bulgarian Acad Sci, Ctr Phytochem, Inst Organ Chem, BU-1113 Sofia, Bulgaria

[2] Inst Tecnol Quim UPV CSIC, Valencia 46022, Spain

[3] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2013年 / 180卷

关键词：

KIT-6 and SBA-15 silica supports; Copper and cerium oxide modifications; VOCs oxidation; Catalytic sites; X-RAY PHOTOELECTRON; SELECTIVE REDUCTION; CUO-CEO2; CATALYSTS; CU; CO; PERFORMANCE; CHEMISTRY; CU-ZSM-5; SURFACE; SBA-15;

D O I：

10.1016/j.micromeso.2013.06.017

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Copper and cerium bi-component modifications of KIT-6 were prepared by wetness impregnation technique from the corresponding nitrate precursors. Nitrogen physisorption, XRD, FTIR of adsorbed CO, UV-Vis, XPS and TPR were used for their characterization. The catalytic activity of the obtained materials was tested in ethyl acetate oxidation and compared to those achieved over SBA-15-supported catalysts. It was established that the interaction between copper and ceria species results in the formation of finely dispersed CuO nanoparticles on the ceria ones, which are stabilized by an interface layer of penetrated into the ceria lattice copper ions in different oxidative state. This process seems to be facilitated in the more opened 3D-structure of KIT-6, which provides better catalytic activity even at high Cu/Ce ratio than those observed for the SBA-15 modifications. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：156 / 161

页数：6