Application of the piperazine-grafted CuBTTri metal-organic framework in postcombustion carbon dioxide capture

被引：35

作者：

Das, Anita ^{[1
]}

Choucair, Mohammad ^{[1
]}

Southon, Peter D. ^{[1
]}

Mason, Jarad A. ^{[2
]}

Zhao, Ming ^{[3
]}

Kepert, Cameron J. ^{[1
]}

Harris, Andrew T. ^{[3
]}

D'Alessandro, Deanna M. ^{[1
]}

机构：

[1] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[3] Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW 2006, Australia

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2013年 / 174卷

关键词：

Carbon dioxide capture; Piperazine; Grafted framework; Metal-organic framework; REACTION-KINETICS; ADSORPTION; GAS; ABSORPTION; SEPARATION; AMINES;

D O I：

10.1016/j.micromeso.2013.02.036

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Post-synthetic modification of H-3[(Cu4Cl)(3)(BTTri)(8)] or CuBTTri, where H(3)BTTri = 1,3,5-tris(1H-1,2,3-triazol-5-yl)benzene, with piperazine (pip) has yielded the grafted framework H-3[(Cu4Cl)(3)(BTTri)(8)(pip)(12)], pip-CuBTTri, which exhibits an improved CO2 uptake at pressures pertinent to postcombustion flue gas capture compared with the non-grafted material. In particular, the volumetric capacity of pip-CuBTTri was 2.5 times higher than that of CuBTTri at ca. 0.15 bar and 293 K. A chemisorption mechanism for CO2 adsorption was proposed on the basis of diffuse reflectance infrared spectra (DRIFTS) and the high initial isosteric heat of adsorption (-Q(st), approximate to 96.5 kJ/mol). Application of the Ideal Adsorbed Solution Theory (LAST) to a simulated mixture of 0.15 bar CO2/0.75 bar N-2 revealed a selectivity factor of 130. Both pressure and temperature swing processes were found to be suitable for facile regeneration of the material over multiple adsorption-desorption cycles. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：74 / 80

页数：7

共 28 条

[1] Absorption of carbon dioxide into aqueous piperazine: reaction kinetics, mass transfer and solubility [J].