Adsorption equilibria and kinetics of CO2, CH4 and N2 in natural zeolites

被引：130

作者：

Hernández-Huesca, R ^{[1
]}

Díaz, L ^{[1
]}

Aguilar-Armenta, G ^{[1
]}

机构：

[1] Univ Autonoma Puebla, Fac Ciencias Quim Benemerita, Ctr Invest, Puebla 72570, Mexico

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 1999年 / 15卷 / 02期

关键词：

activated diffusion; gas adsorption; isosteric heat;

D O I：

10.1016/S1383-5866(98)00094-X

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The ability of natural zeolites (ZAPS, ZNT and ZN-19) to adsorb pure CO2, CH4 and N-2, was studied experimentally. The volume of CO2 adsorption in the monolayer (Langmuir) was found to be close to the micropore volume estimated by the Dubinin-Astakhov model (N-2, 77 K) for all three zeolites. Considerable differences in the adsorption of CO2, CH4, and Na with these zeolites were observed, a factor that can be used for the separation of CO2-CH4 and N-2-CH4 mixtures. The mechanism of activated diffusion was detected in the adsorption of CH4 with ZN-19. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：163 / 173

页数：11

共 15 条

[1] Barrer R.M., 1971, ADV CHEM SER, V102
[2] Breck D. W., 1974, ZEOLITE MOL SIEVES, p[139, 143, 162, 618, 622, 623]
[3] On a theory of the van der Waals adsorption of gases
Brunauer, S
Deming, LS
Deming, WE
Teller, E
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 : 1723 - 1732
[4] DANA ES, 1942, SYSTEMS MINERALOGY, P570
[5] FRANKIEWICZ RG, 1983, IND GAS SEPARATIONS, P213
[6] GOEPPNER J, 1974, WATER WASTE ENG, V11, P30
[7] CO2 SORPTION ISOTHERMS IN LTL ZEOLITES
JOSHI, PN
SHIRALKAR, VP
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (03) : 619 - 624
[8] HEATS OF SORPTION OF GASES IN CHABAZITE, ENERGETIC HETEROGENEITY AND THE ROLE OF QUADRUPOLES IN SORPTION
KINGTON, GL
MACLEOD, AC
[J]. TRANSACTIONS OF THE FARADAY SOCIETY, 1959, 55 (10): : 1799 - 1814
[9] ADSORPTION EQUILIBRIA - HYDROCARBON GAS MIXTURES
LEWIS, WK
GILLILAND, ER
CHERTOW, B
CADOGAN, WP
[J]. INDUSTRIAL AND ENGINEERING CHEMISTRY, 1950, 42 (07): : 1319 - 1326
[10] Mumpton FA., 1977, MINERALOGY GEOLOGY N, P177

← 1 2 →