화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터)
권호 28권 1호, p.1169
발표분야 [주제 12] 화학공학일반(부문위원회 발표)
제목 Defect-Free Pure Silica Zeolite Adsorbents for Ethane-Selective Ethane/Ethylene Separation
초록 C2H6-selective adsorbents for efficient C2H6/C2H4 separation have been extensively investigated focusing on the porous materials with organic-based framework, such as metal-organic frameworks (MOFs) and hydrogen-bonded frameworks (HOFs). However, most of these materials have relatively poor stability and low packing density, restricting industrial application. Herein, we reported C2H6-selective pure silica zeolite adsorbents with high stability and packing density. Systematic research revealed that minimizing silanol defects and aluminum sites significantly suppresses the interactions between π electrons in C2H4 and the silanol or cation in zeolites, resulting in olefin-phobic adsorption behavior. As a result, the defect-free pure silica zeolites with BEA, MFI, and CHA framework structure showed the high C2H6/C2H4 selectivity (2.20, 1.98, and 2.09, respectively). Especially, in the case of defect-free pure silica BEA zeolite, a mixture of C2H6/C2H4 (1/1 v/v) could be separated into the polymer-degree ethylene (>99.95%) with high ethylene productivity (22.98 LSTP L-1) at 298 K, which is outstanding performance compared with state-of-the-art adsorbents.
저자 박종범1, 조경호2, 김정철3, 최민기1
소속 1Korea Advanced Institute of Science and Technology, 2Korea Research Institute of Chemical Technology, 3Institute for Basic Science
키워드 분리기술(Separation Technology)
E-Mail
원문파일 초록 보기