Dynamic Adsorption of CO2/N2 on Cation-Exchanged Chabazite SSZ-13: A Breakthrough Analysis

被引：34

作者：

Bower, Jamey K. ^{[1
,3
]}

Barpaga, Dushyant ^{[2
]}

Prodinger, Sebastian ^{[1
]}

Krishna, Rajamani ^{[4
]}

Schaef, H. Todd ^{[1
]}

McGrail, B. Peter ^{[2
]}

Derewinski, Miroslaw A. ^{[1
]}

Motkuri, Radha Kishan ^{[2
]}

机构：

[1] PNNL, Phys & Computat Sci Div, Richland, WA 99352 USA

[2] PNNL, Energy & Environm Directorate, Richland, WA 99352 USA

[3] Ohio State Univ, Dept Chem & Biochem, Columbus, OH 43210 USA

[4] Univ Amsterdam, Vant Hoff Inst Mol Sci, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 17期

关键词：

chabazite; SSZ-13; dynamic adsorption; breakthrough; cation-exchange; METAL-ORGANIC FRAMEWORKS; CO2; CAPTURE; ZEOLITE SSZ-13; CARBON CAPTURE; SEPARATION; SELECTIVITY; SORBENTS; STORAGE;

D O I：

10.1021/acsami.8b03848

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Alkali-exchanged SSZ-13 adsorbents were investigated for their applicability in separating N-2 from CO2 in flue gas streams using a dynamic breakthrough method. In contrast to LAST calculations based on equilibrium isotherms, K+ exchanged SSZ-13 was found to yield the best N-2 productivity, comparable to Ni-MOF-74, under dynamic conditions where diffusion properties play a significant role. This was attributed to the selective, partial blockage of access to the chabazite cavities, enhancing the separation potential in a 15/85 CO2/N-2 binary gas mixture.

引用

页码：14287 / 14291

页数：5

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