通过双（三乙氧基硅基）乙烷（BTESE）膜的单级和两级分离氢气（H）/甲苯（TOL）

Hydrogen (H)/Toluene (TOL) Separation via One and Two Stages of the Bis(triethoxysily)ethane (BTESE) Membranes.

作者信息

Ibrahim Suhaina Mohd, Yu Xin, Miyata Shigeru, Mishina Kengo, Salak Feridoun, Lawal Sulaiman Oladipo, Tsuru Toshinori, Sawamura Ken-Ichi

机构信息

eSep Inc., Keihanna Open Innovation Center@Kyoto (KICK), Annex 320, 7-5-1, Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0238, Japan.

Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan.

出版信息

Membranes (Basel). 2024 Jul 25;14(8):165. doi: 10.3390/membranes14080165.

DOI:10.3390/membranes14080165

PMID:39195417

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11356612/

Abstract

The separation ability of bis(triethoxysilyl)ethane (BTESE) membranes for hydrogen (H) purification from hydrogen (H)/toluene (TOL) gas mixtures after a methylcyclohexane (MCH) dehydrogenation process was investigated via one-stage and two-stage membrane processes. This study revealed that BTESE membranes of varied pore sizes (0.4, 0.5, and 0.7 nm) in a one-stage configuration can manage to achieve a H purity ~99.9%. However, the TOL concentrations fell within a wide range, ranging from 280 to 5441 ppm. A primary goal of this research was to lower the TOL concentration in the permeate stream below 200 ppm. Hence, by applying the two-stage membrane, it was demonstrated that the TOL concentration in the permeate stream could be lowered below 200 ppm.

摘要

通过单级和两级膜工艺，研究了双（三乙氧基硅基）乙烷（BTESE）膜在甲基环己烷（MCH）脱氢过程后从氢气（H）/甲苯（TOL）气体混合物中提纯氢气（H）的分离能力。该研究表明，在单级配置中，不同孔径（0.4、0.5和0.7纳米）的BTESE膜能够实现氢气纯度约99.9%。然而，甲苯浓度范围较宽，从280至5441 ppm不等。本研究的一个主要目标是将渗透气流中的甲苯浓度降低至200 ppm以下。因此，通过应用两级膜，结果表明渗透气流中的甲苯浓度可降低至200 ppm以下。