Pore structure-CO2 adsorption property relations of supported amine materials with multi-pore networks

被引:20
作者
Cogswell, C. F. [1 ]
Xie, Z. [1 ]
Wolek, A. [1 ]
Wang, Y. [1 ]
Stavola, A. [1 ]
Finkenaur, M. [1 ]
Gilmore, E. [1 ]
Lanzillotti, M. [1 ]
Choi, S. [1 ]
机构
[1] Northeastern Univ, Dept Chem Engn, 360 Huntington Ave, Boston, MA 02115 USA
关键词
CARBON-DIOXIDE CAPTURE; CO2; ADSORPTION; MESOPOROUS SILICA; BETA-ZEOLITE; HYPERBRANCHED AMINOSILICA; AMBIENT AIR; FLUE-GAS; ADSORBENTS; STABILITY; SEPARATION;
D O I
10.1039/c7ta01616f
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
Conventional supported amine adsorbents to date are known to suffer from the trade-off between increasing amine content and decreasing access to amine sites. In this work, we propose a solution to this known issue by introducing substrates with multiple pore networks where each pore channel can be used for amine loading and gas diffusion. It was hypothesized that these types of substrates with a multi-pore system would allow for a high amine content without a decrease in diffusion speed or amine efficiency. As a proof of concept, a 3-dimensional silica mesoporous framework composed of agglomerated spheres of microporous zeolite beta was loaded with large or small amine-containing molecules. The resulting hybrid adsorbents include mesopores loaded with large amine molecules or micropores incorporating small amine molecules, where molecular recognition using different pore dimensions allows selective incorporation of amine groups according to their molecular size. As a result of this selective amine loading, the supported amine adsorbent system proposed here demonstrates fast sorption kinetics at all amine loadings while maintaining amine efficiencies near the theoretical maximum value, which has not been achieved in supported amine adsorbents of this class as yet. Thus, this work may unlock new opportunities for the study of solid amine adsorbents with high efficiency amine utilization and fast achievement of near equilibrium capacities.
引用
收藏
页码:8526 / 8536
页数:11
相关论文
共 40 条
[1]   New Kinetic Model That Describes the Reversible Adsorption and Desorption Behavior of CO2 in a Solid Amine Sorbent [J].
Abdollahi-Govar, Anahita ;
Ebner, Armin D. ;
Ritter, James A. .
ENERGY & FUELS, 2015, 29 (07) :4492-4502
[2]   Functionalized Polysilsesquioxane-Based Hybrid Silica Solid Amine Sorbents for the Regenerative Removal of CO2 from Air [J].
Abhilash, Kochukunju Adisser Saraladevi ;
Deepthi, Thomas ;
Sadhana, Retnakumari Amma ;
Benny, K. George .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (32) :17969-17976
[3]   Important Roles of Enthalpic and Entropic Contributions to CO2 Capture from Simulated Flue Gas and Ambient Air Using Mesoporous Silica Grafted Amines [J].
Alkhabbaz, Mustafa A. ;
Bollini, Praveen ;
Foo, Guo Shiou ;
Sievers, Carsten ;
Jones, Christopher W. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (38) :13170-13173
[4]   Guanidinylated poly(allylamine) supported on mesoporous silica for CO2 capture from flue gas [J].
Alkhabbaz, Mustafa A. ;
Khunsupat, Ratayakorn ;
Jones, Christopher W. .
FUEL, 2014, 121 :79-85
[5]   Effect of the structural constituents of metal organic frameworks on carbon dioxide capture [J].
Andirova, Dinara ;
Cogswell, Christopher F. ;
Lei, Yu ;
Choi, Sunho .
MICROPOROUS AND MESOPOROUS MATERIALS, 2016, 219 :276-305
[6]   Functionalization of Metal-Organic Frameworks for Enhanced Stability under Humid Carbon Dioxide Capture Conditions [J].
Andirova, Dinara ;
Lei, Yu ;
Zhao, Xiaodan ;
Choi, Sunho .
CHEMSUSCHEM, 2015, 8 (20) :3405-3409
[7]   Quantification of chemisorption and physisorption of carbon dioxide on porous silica modified by propylamines: Effect of amine density [J].
Aziz, Baroz ;
Hedin, Niklas ;
Bacsik, Zoltan .
MICROPOROUS AND MESOPOROUS MATERIALS, 2012, 159 :42-49
[8]   Analysis of CO2 Adsorption in Amine-Functionalized Porous Silicas by Molecular Simulations [J].
Builes, Santiago ;
Lopez-Aranguren, Pedro ;
Fraile, Julio ;
Vega, Lourdes F. ;
Domingo, Concepcion .
ENERGY & FUELS, 2015, 29 (06) :3855-3862
[9]   Amine-Tethered Solid Adsorbents Coupling High Adsorption Capacity and Regenerability for CO2 Capture From Ambient Air [J].
Choi, Sunho ;
Gray, McMahan L. ;
Jones, Christopher W. .
CHEMSUSCHEM, 2011, 4 (05) :628-635
[10]   Application of Amine-Tethered Solid Sorbents for Direct CO2 Capture from the Ambient Air [J].
Choi, Sunho ;
Drese, Jeffrey H. ;
Eisenberger, Peter M. ;
Jones, Christopher W. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2011, 45 (06) :2420-2427