Impact Factor:

6.064

DOI number:

10.1016/j.jiec.2014.04.035

Affiliation of Author(s):

重庆工商大学

Teaching and Research Group:

化学工程系

Journal:

journal of industrial and engineering chemistry

Funded by:

大气环境模拟与污染控制四川省高校重点实验室

Key Words:

Supported CoMn oxide catalyst；Phenyl VOCs；Catalytic combustion；Active component

Abstract:

Supported CoMn/AC composite oxide catalysts were prepared by a typical impregnation method at different calcination temperatures. The prepared CoMn/AC catalysts were characterized, and the catalytic activity of the prepared supported CoMn/AC oxide catalysts was also investigated by the catalytic combustion of phenyl volatile organic compounds (VOCs) (benzene, toluene, and ethylbenzene). XRD and XPS results indicated that MnCo2O4 and CoMn2O4 were the main crystal phase species in the prepared supported CoMn/AC oxide catalysts. The active components were observed to be highly dispersed and had small crystal sizes. The toluene catalytic combustion results demonstrated that the CAT350 catalyst had higher toluene catalytic combustion activity than the CTA250, CAT300, and CAT400 catalysts. The toluene catalytic combustion conversion of the CAT350 catalyst exceeded 93.5% at 235 °C, with a decreased toluene concentration in air of less than 130 ppm at 250 °C. The order of toluene catalytic activity of the supported CoMn/AC oxide catalysts was as follows: CAT250 < CAT300 ≈ CAT400 < CAT350. The catalytic combustion activity and stability of the CAT350 catalyst also increased with the increase in reaction temperature. The catalytic activity of the CAT350 catalyst was investigated to bring about the complete oxidation of benzene, ethylbenzene, and toluene. The combustibility of phenyl VOCs on the CAT350 catalyst was observed to follow the order benzene < ethylbenzene < toluene. Therefore, the differences in the phenyl VOC catalytic combustion performances of the supported CoMn/AC composite oxide catalysts can be attributed to the different physical chemistry properties of the phenyl VOC molecules and the catalyst.

First Author:

Guilin Zhou

Co-author:

何小玲,刘胜,谢红梅,傅敏

Indexed by:

源刊论文

Correspondence Author:

周桂林

Document Code:

C68LT9BWJVXS6X6L1E9VWHOG7BSIIWRK

Discipline:

Engineering

First-Level Discipline:

Chemical Engineering and Technology

Document Type:

Journal Article

Issue:

21

Page Number:

932–941

Translation or Not:

no

Date of Publication:

2015-02-01

Links to published journals:

https://doi.org/10.1016/j.jiec.2014.04.035