Study of SO2 oxidation over V2O5/activated carbon catalyst using in situ diffuse reflectance infrared Fourier transformation spectroscopy

被引：13

作者：

Jing, Wen ^{[1
,2
]}

Guo, Qianqian ^{[1
,2
]}

Hou, Yaqin ^{[1
]}

Han, Xiaojin ^{[1
]}

Huang, Zhanggen ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 31卷 / 05期

关键词：

V2O5/AC; In Situ DRIFTS; SO2; Oxidation; Oxygen Groups; Water Vapor; ACTIVATED CARBON; SULFUR-DIOXIDE; FLUE-GAS; MOLECULAR-STRUCTURE; SURFACE-CHEMISTRY; LOW-TEMPERATURES; NO REDUCTION; ADSORPTION; REMOVAL; VANADIA;

D O I：

10.1007/s11814-013-0270-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The SO2 oxidation over V2O5/AC catalyst was studied using an in situ diffuse reflectance infrared Fourier transformation spectroscopy technique at 120 A degrees C. Results reveal that the surface oxygen groups could neither act as active sites for SO2 oxidation nor supply the oxygen needed for V (V) a dagger"V (IV) redox cycle. The vanadia species and gas phase oxygen are essential for SO2 oxidation. During SO2 oxidation over V2O5/AC, the surface hydroxyl groups involve in the formation of sulfate species. The role of water vapor in flue gas might be to supplement the hydroxyl groups consumed so that the SO2 oxidation could continue.

引用

页码：794 / 800

页数：7

共 36 条

[1] SOME ASPECTS OF THE SURFACE-CHEMISTRY OF CARBON-BLACKS AND OTHER CARBONS [J].

BOEHM, HP .

CARBON, 1994, 32 (05) :759-769

[2] Surface oxides on carbon and their analysis: a critical assessment [J].

Boehm, HP .

CARBON, 2002, 40 (02) :145-149

[3] On a theory of the van der Waals adsorption of gases [J].

Brunauer, S ;

Deming, LS ;

Deming, WE ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 :1723-1732

[4] Molecular structure of supported molten salt catalysts for SO2 oxidation [J].

Christodoulakis, A ;

Boghosian, S .

JOURNAL OF CATALYSIS, 2003, 215 (01) :139-150

[5] Oxidation of sulfur dioxide over supported vanadia catalysts: molecular structure-reactivity relationships and reaction kinetics [J].

Dunn, JP ;

Stenger, HG ;

Wachs, IE .

CATALYSIS TODAY, 1999, 51 (02) :301-318

[6] Oxidation of sulfur dioxide to sulfur trioxide over supported vanadia catalysts [J].

Dunn, JP ;

Koppula, PR ;

Stenger, HG ;

Wachs, IE .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 19 (02) :103-117

[7] NH3-SCR of NO at low temperatures over sulphated vanadia on carbon-coated monoliths:: Effect of H2O and SO2 traces in the gas feed [J].

García-Bordejé, E. ;

Pinilla, J. L. ;

Lázaro, M. J. ;

Moliner, R. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 66 (3-4) :281-287

[8] Vanadium supported on carbon coated honeycomb monoliths for the selective catalytic reduction of NO at low temperatures:: Influence of the oxidation pre-treatment [J].

García-Bordejé, E ;

Lázaro, MJ ;

Moliner, R ;

Alvarez, PM ;

Gómez-Serrano, V ;

Fierro, JLG .

CARBON, 2006, 44 (03) :407-417

[9] Effects of Concentration and Adsorption Product on the Adsorption of SO2 and NO on Activated Carbon [J].

Guo, Yangyang ;

Li, Yuran ;

Zhu, Tingyu ;

Ye, Meng .

ENERGY & FUELS, 2013, 27 (01) :360-366

[10] Regeneration of a vanadium pentoxide supported activated coke catalyst-sorbent used in simultaneous sulfur dioxide and nitric oxide removal from flue gas: Effect of ammonia [J].

Guo, Yanxia ;

Liu, Zhenyu ;

Liu, Qingya ;

Huang, Zhanggen .

CATALYSIS TODAY, 2008, 131 (1-4) :322-329

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