کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
151297 456468 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Separation of dimethyl ether from syn-gas components by poly(dimethylsiloxane) and poly(4-methyl-1-pentene) membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Separation of dimethyl ether from syn-gas components by poly(dimethylsiloxane) and poly(4-methyl-1-pentene) membranes
چکیده انگلیسی

Dimethyl ether (DME) has been discussed as a potential fuel for both combustion and fuel cell applications. This paper evaluates the ability for membranes to separate DME from syn-gas components, such as H2 and CO. Separations from CO2 and CH4 also are discussed. Experiments performed include permeability and selectivity of these gases through poly(4-methyl-1-pentene) (TPX) and poly(dimethylsiloxane) (PDMS) using variable temperature mixed gas experiments. The DME data is the first to be reported through these membranes. In this paper, the chosen polymers reflect both rubbery and semicrystalline materials. Rubbery polymers tend to be weakly size sieving, which, in this work, has resulted in larger permeabilities, lower separation factors, and lower activation energies of permeation (Ep). Conversely, the semicrystalline TPX membranes showed much greater sensitivity to penetrant size; although the gas condensability also played a role in transport.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 170, Issue 1, 15 May 2011, Pages 178–183
نویسندگان
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