Comparison between unsupported mesoporous Co3O4 and supported Co3O4 on mesoporous silica as catalysts for N2O decomposition

被引：29

作者：

Choi, Hun Min ^{[1
]}

Lee, Seung-Jae ^{[2
]}

Moon, Seung-Hyun ^{[2
]}

Tuan Ngoc Phan ^{[1
]}

Jeon, Sang Goo ^{[2
]}

Ko, Chang Hyun ^{[1
]}

机构：

[1] Chonnam Natl Univ, Sch Chem Engn, 77 Yongbong Ro, Kwangju 500757, South Korea

[2] Korea Inst Energy Res, Bioenergy Res Ctr, 152 Gajeong Ro, Daejeon 305343, South Korea

来源：

CATALYSIS COMMUNICATIONS | 2016年 / 82卷

关键词：

Mesoporous Co3O4; Co3O4; nanoparticles; N2O decomposition; Metal oxide supported catalyst; Mesopore; NITROUS-OXIDE; PERFORMANCE; REDUCTION; EMISSIONS; FE-ZSM-5; SO2; O-2;

D O I：

10.1016/j.catcom.2016.04.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mesoporous Co3O4 (meso-Co3O4) and Co3O4 nanoparticles supported on mesoporous silica SBA-15 (Co/SBA-15) were prepared by hydrothermal synthesis and an impregnation method, respectively. Although the as-prepared meso-Co3O4 had mesopores and a higher surface area comparable to that of Co/SBA-15, its catalytic activity for N2O decomposition was much lower than that of Co3O4/SBA-15. The low catalytic activity of meso-Co3O4 mainly stems from the drastic decrease of the meso-Co3O4 surface area under the reaction condition used. On the other hand, Co/SBA-15 maintained its high surface area and mesopores with the aid of a robust silica support. This finding indicates that Co3O4 supported by a support is much more stable and efficient than meso-Co3O4 under N2O decomposition reaction conditions. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：50 / 54

页数：5

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