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Received October 28, 2013
Accepted January 16, 2014
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표면 개질된 지지체를 이용한 Cu3(BTC)2 튜브형 분리막의 용매열 합성 및 특성분석
Solvothermal Synthesis and Characterization of Cu3(BTC)2 Tubular Membranes Using Surface Modified Supports
경희대학교 화학공학과, 446-701 경기도 용인시 기흥구 서천동 1
Department of Chemical Engineering, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin, Gyeonggi 446-701, Korea
jkim21@khu.ac.kr
Korean Chemical Engineering Research, April 2014, 52(2), 214-218(5), 10.9713/kcer.2014.52.2.214 Epub 1 April 2014
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Abstract
본 연구에서는 용매열합성법(solvothermal method)을 이용하여 매크로 기공의 알루미나 튜브 지지체 위에 나노기공 Cu3(BTC)2 분리막을 제조하였다. In-situ 용매열합성법을 이용하는 경우, 매크로 기공의 알루미나 지지체 위에 균일한 핵생성과 성장을 통해 연속적이고 균열이 없는 Cu3(BTC)2 층을 형성하기 어렵다. 본 연구에서는 용매열합성 전에 알루미나 지지체 표면을 200 ℃로 가열한 상태에서 Cu 전구체 용액을 분무하여 지지체 표면을 개질한 후, 용매열합성법을 수행하여 연속적이고 균열이 없는 Cu3(BTC)2 튜브형 분리막을 제조할 수 있었다. 합성된 Cu3(BTC)2 분리막은 XRD, FE-SEM 및 기체투과 실험 등을 통해 분석하였다. 5 μm의 두께를 가진 Cu3(BTC)2 튜브형 분리막을 통한 단일기체 투과실험 결과, 80 oC에서 H2가 가지는 투과도는 7.8×10^(-7)mol/s·m2·Pa이고, H2/N2, H2/CO2의 이상선택도는 각각 11.94, 12.82로 계산되었다.
In this study, nanoporous Cu3(BTC)2 membranes were synthesized on macroporous alumina tube supports by solvothermal method. It is very difficult to prepare uniform and crack-free Cu3(BTC)2 layer on macroporous alumina support by in situ solvothermal method. In this study, continuous and crack-free Cu3(BTC)2 tubular membranes could be obtained by in situ solvothermal process after surface modification of alumina support. The surface modification was_x000D_
conducted by spraying Cu precursor solution on the alumina support heated at 200 ℃. The prepared Cu3(BTC)2 tubular membranes were characterized by XRD, FE-SEM and gas permeation experiments. H2 permeance through 5 μm thick Cu3(BTC)2 tubular membrane was calculated to be 7.8×10^(-7) mol/s·m2·Pa by single gas permeation test, with the ideal selectivities of H2/N2=11.94, and H2/CO2=12.82.
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