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Durable poly(vinyl alcohol)/AgBF4/Al(NO3)(3) complex membrane with high permeance for propylene/propane separation

Title
Durable poly(vinyl alcohol)/AgBF4/Al(NO3)(3) complex membrane with high permeance for propylene/propane separation
Author
강용수
Keywords
FACILITATED OLEFIN TRANSPORT; SILVER IONS; OLEFIN/PARAFFIN SEPARATIONS; AL(NO3)(3); REDUCTION; MIXTURES; SALTS
Issue Date
2017-03
Publisher
ELSEVIER SCIENCE BV
Citation
SEPARATION AND PURIFICATION TECHNOLOGY, v. 174, page. 39-43
Abstract
A highly permeable and durable poly(vinyl alcohol) (PVA)/AgBF4/Al(NO3)(3) complex membrane for propylene/propane separation was developed. The selectivity and permeance of the membrane were determined to be about 17 and 11 GPU, respectively, which represented improvement on previously developed membranes. The propylene/propane separation performance of the membrane was maintained for more than 145 h even though the Ag ions, which functioned as olefin carriers, were observed to be unstable during this period. This enhanced permeance and long-term stability was attributed to the incorporation of Al(NO3)(3) into the permeable PVA matrix, which also contained AgBF4. The favorable interaction between the Al3+ ions and the BF4- ions of AgBF4 induced ready coordination between the NO3- and Ag+ ions, thereby affording the long-term stability. The complexation behavior of the PVA/AgBF4/Al(NO3)(3) membrane was also investigated by thermogravimetric analysis, X-ray photoelectron spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and Fourier Transform Raman spectroscopy. (C) 2016 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S1383586616311005?via%3Dihubhttp://repository.hanyang.ac.kr/handle/20.500.11754/113362
ISSN
1383-5866; 1873-3794
DOI
10.1016/j.seppur.2016.09.050
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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