期刊
PETROLEUM CHEMISTRY
卷 58, 期 9, 页码 790-796出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0965544118090037
关键词
PTMSP; PAF-11; physical aging; thin-film composite membranes; gas separation
类别
资金
- Federal Agency for Scientific Organizations of Russia [AAAA-A-18-118011990199-9]
Composite membranes with a thin selective layer based on poly[1-trimethylsilyl-1-propyne] (PTMSP) and crosslinked PTMSP containing 10 wt % of nanoparticles of porous aromatic frameworks (PAF-11) have been synthesized and studied. Monitoring of changes in the gas transport characteristics of the membranes under ambient conditions for 7500 h has revealed that for all the samples, the transport characteristics abruptly decrease within the first 1000-2000 h; after that, the mass transfer constants gradually change over time. In the case of a composite membrane with the selective layer based on crosslinked PTMSP and PAF-11 nanoparticles, stable permeability values after 7000 h are 2.1, 3.5, and 12.9 m(3)/(m(2) h atm) for N-2, O-2, and CO2,respectively (at an ideal selectivity of alpha(O-2/N-2) = 1.6 and alpha(CO2/N-2) = 6.1); to date, this is the best published result for thin-film composite membranes based on highly permeable glassy polymers.
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