Alomair Abdulaziz A, Alqaheem Yousef
Petroleum Research Center, Kuwait Institute for Scientific Research, Kuwait.
ACS Omega. 2019 Nov 5;4(21):19005-19010. doi: 10.1021/acsomega.9b01871. eCollection 2019 Nov 19.
The separation of -xylene from its bulkier -xylene and -xylene is of great importance in the petrochemical industry. This paper presents the experimental results of the separation of xylene isomers using a zeolite carbon composite membrane in a pervaporation system. The preparation method involves the use of an inexpensive carbon precursor, sucrose, to avoid the lengthy conventional preparation methods used in the literature (e.g., hydrothermal synthesis). The composite membranes that were prepared exhibited a separation performance with a -xylene/-xylene separation factor of 5.35 and permeability of 76 g/m h for 95% -xylene at 25 °C. The preparation procedure was designed from an economical perspective to facilitate any possible future commercialization.
从体积较大的间二甲苯和对二甲苯中分离出邻二甲苯在石油化工行业中具有重要意义。本文介绍了在渗透汽化系统中使用沸石碳复合膜分离二甲苯异构体的实验结果。制备方法采用了廉价的碳前驱体蔗糖，以避免文献中使用的冗长传统制备方法（例如水热合成）。制备的复合膜在25℃下对95%的邻二甲苯表现出分离性能，邻二甲苯/间二甲苯分离因子为5.35，渗透率为76 g/m²·h。制备过程从经济角度进行设计，以促进未来任何可能的商业化。
