Effect of pore structure and surface chemistry of virgin activated carbons on removal of hydrogen sulfide

被引：206

作者：

Bandosz, TJ ^{[1
]}

机构：

[1] CUNY City Coll, Dept Chem, New York, NY 10031 USA

来源：

CARBON | 1999年 / 37卷 / 03期

关键词：

activated carbon; adsorption; surface properties; porosity;

D O I：

10.1016/S0008-6223(98)00217-6

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：

Three activated carbons of various origins were tested as H2S adsorbents, chosen to differ significantly in surface area, pore structure and surface chemistry. The carbons were characterized by sorption of nitrogen and water vapor, potentiometric titration, Boehm titration, and thermal analysis. The results showed that a heterogeneous carbon (having micro- and mesopores) with chemical surface functionality performs better than apparently neutral, predominantly microporous materials with high surface areas. This is thought to be due to the adsorption of water on surface groups which enhances the oxidation of H2S to sulfur or ultimately to sulfuric acid. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：483 / 491

页数：9

共 34 条

[1] The determination of surface changes in active carbons by potentiometric titration and water vapour adsorption
Bandosz, TJ
Buczek, B
Grzybek, T
Jagiello, J
[J]. FUEL, 1997, 76 (14-15) : 1409 - 1416
[2] Effect of surface chemistry on sorption of water and methanol on activated carbons
Bandosz, TJ
Jagiello, J
Schwarz, JA
Krzyzanowski, A
[J]. LANGMUIR, 1996, 12 (26) : 6480 - 6486
[3] Bansal R.C., 1988, ACTIVE CARBON
[4] SOME ASPECTS OF THE SURFACE-CHEMISTRY OF CARBON-BLACKS AND OTHER CARBONS
BOEHM, HP
[J]. CARBON, 1994, 32 (05) : 759 - 769
[5] CARBONIZATION MECHANISMS RESULTING FROM INTUMESCENCE ASSOCIATION WITH THE AMMONIUM POLYPHOSPHATE-PENTAERYTHRITOL FIRE-RETARDANT SYSTEM
BOURBIGOT, S
LEBRAS, M
DELOBEL, R
[J]. CARBON, 1993, 31 (08) : 1219 - 1230
[6] Water adsorption on activated carbons with different degrees of oxidation
CarrascoMarin, F
Mueden, A
Centeno, TA
Stoeckli, F
MorenoCastilla, C
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (12): : 2211 - 2215
[7] CATALYTIC-OXIDATION OF HYDROGEN-SULFIDE BY AIR OVER AN ACTIVATED CARBON-FIBER
CHOI, JJ
HIRAI, M
SHODA, M
[J]. APPLIED CATALYSIS, 1991, 79 (02): : 241 - 248
[8] Adsorption of SO2 onto oxidized and heat-treated activated carbon fibers (ACFS)
Daley, MA
Mangun, CL
DeBarr, JA
Riha, S
Lizzio, AA
Donnals, GL
Economy, J
[J]. CARBON, 1997, 35 (03) : 411 - 417
[9] DUBININ MM, 1966, CHEM PHYSICS CARBON, V2
[10] ADSORPTION IN SLIT-LIKE AND CYLINDRICAL MICROPORES IN HENRYS LAW REGION - MODEL FOR MICROPOROSITY OF CARBONS
EVERETT, DH
POWL, JC
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1976, 72 : 619 - 636

← 1 2 3 4 →