Separation of binary C5 and C6 hydrocarbon mixtures through MF1 zeolite membranes

被引:36
作者
Arruebo, M [1 ]
Falconer, JL [1 ]
Noble, RD [1 ]
机构
[1] Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA
关键词
diene/alkane separation; MF1 zeolite membrane; n-pentane/isoprene separation; hydrocarbon separation; B-ZSM-5; membrane;
D O I
10.1016/j.memsci.2005.06.032
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
MFI membranes on stainless-steel tubular supports separated mixtures of n-pentane/isoprene; the highest n-pentane/isoprene selectivity was 74, which was obtained at 333 K for a B-ZSM-5 membrane. Separation is due to faster diffusion of the linear alkane. The single-component permeance of n-pentane was higher than its permeance in the mixture because the slower-diffusing isoprene decreases the rate of n-pentane diffusion. No effects due to isoprene polymerization were observed, and the acid sites in B-ZSM-5 did not affect the separations. The separation selectivity for an equimolar mixture of n-hexane and 2,2-dimethylbutane was greater than 300 at 373 K for all membranes, and this was used as an indication of membrane quality. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:171 / 176
页数:6
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