Adsorption of carbon dioxide, methane, nitrogen, oxygen and argon in NaETS-4

被引：84

作者：

Pillai, Renjith S. ^{[1
]}

Peter, Sunil A. ^{[1
]}

Jasra, Raksh V. ^{[1
]}

机构：

[1] Cent Salt & Marine Chem Res Inst, Discipline Inorgan Mat & Catalysis, Bhavnagar 364002, Gujarat, India

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2008年 / 113卷 / 1-3期

关键词：

NaETS-4; adsorption; flue gas; landfill gas; oxygen-argon separation;

D O I：

10.1016/j.micromeso.2007.11.042

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The NaETS-4 sample was synthesized and the effect of heat treatment on the adsorption of CO(2), CH(4), N(2), O(2) and Ar in NaETS-4 was studied at 373 K and 423 K. The synthesized NaETS4 sample was characterized by scanning electron microscopy, X-ray powder diffraction and TGA/DTA analysis. The XRD pattern shows that the NaETS-4 structure starts collapsing at around 473 K. NaETS-4 degassed at 373 K shows the highest equilibrium adsorption capacity for CO(2) among the above gases and also shows higher equilibrium selectivity for CO(2) over N(2) and CH(4). NaETS-4 sample degassed at 373 K showed moderate equilibrium selectivity of 1.4 for O(2) over Ar. However, the NaETS-4 sample degassed at 423 K showed infinite selectivity for O(2) over Ar and, N(2) over CH(4) due to the pore contraction of NaETS4 at this temperature. The equilibrium adsorption capacity for CO(2) also decreased drastically in NaETS-4 degassed at 423 K and the isotherm was irreversible. The chemisorption of CO(2) in NaETS-4 degassed at 423 K is evidenced by DRIFT spectrum of CO(2) adsorption in NaETS-4 degassed at 373 K and 423 K. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：268 / 276

页数：9

共 31 条

[1] Synthesis of ETS-4/TiO2 composite membranes and their pervaporation performance [J].

Braunbarth, CM ;

Boudreau, LC ;

Tsapatsis, M .

JOURNAL OF MEMBRANE SCIENCE, 2000, 174 (01) :31-42

[2]

BRECK DW, 1984, ZEOLITE MOL SIEVES, P636

[3] Separation of CH4/CO2/N2 mixtures by layered pressure swing adsorption for upgrade of natural gas [J].

Cavenati, Simone ;

Grande, Carlos A. ;

Rodrigues, Alirii E. .

CHEMICAL ENGINEERING SCIENCE, 2006, 61 (12) :3893-3906

[4]

CHOUDARY NV, 2000, Patent No. 6090738

[5] COMPARISON OF ACTIVATED CARBON AND ZEOLITE 13X FOR CO2 RECOVERY FROM FLUE-GAS BY PRESSURE SWING ADSORPTION [J].

CHUE, KT ;

KIM, JN ;

YOO, YJ ;

CHO, SH ;

YANG, RT .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1995, 34 (02) :591-598

[6] Rietveld refinement of the zorite structure of ETS-4 molecular sieves [J].

Cruciani, G ;

De Luca, P ;

Nastro, A ;

Pattison, P .

MICROPOROUS AND MESOPOROUS MATERIALS, 1998, 21 (1-3) :143-153

[7] Adsorption equilibrium of carbon dioxide, methane and nitrogen onto Na- and H-mordenite at high pressures [J].

Delgado, JA ;

Uguina, MA ;

Gómez, JM ;

Ortega, L .

SEPARATION AND PURIFICATION TECHNOLOGY, 2006, 48 (03) :223-228

[8] Separation of nitrogen from oxygen using a titanosilicate membrane prepared on a porous α-alumina support tube [J].

Guan, GQ ;

Kusakabe, K ;

Morooka, S .

SEPARATION SCIENCE AND TECHNOLOGY, 2002, 37 (05) :1031-1039

[9] An experimental adsorbent screening study for CO2 removal from N2 [J].

Harlick, PJE ;

Tezel, FH .

MICROPOROUS AND MESOPOROUS MATERIALS, 2004, 76 (1-3) :71-79

[10] SEPARATION OF GASES BY PRESSURE SWING ADSORPTION [J].

JASRA, RV ;

CHOUDARY, NV ;

BHAT, SGT .

SEPARATION SCIENCE AND TECHNOLOGY, 1991, 26 (07) :885-930

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