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Zeolites for the separation of ethylene, ethane, and ethyne

FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING 2024年第9期18卷 108-0页

作者： Wang, Binyu Li, Qiang Zhang, Haoyang Zhang, Jia-Nan Pan, Qinhe Yan, Wenfu Jilin Univ Coll Chem State Key Lab Inorgan Synth & Preparat Chem Changchun 130012 Peoples R China Zhengzhou Univ Coll Mat Sci & Engn Key Lab Adv Energy Catalyt & Funct Mat Preparat Zhengzhou 450012 Peoples R China Hainan Univ Sch Chem & Chem Engn Key Lab Adv Mat Trop Isl Resources Minist Educ Haikou 570228 Peoples R China

The cost-effective separation of ethylene (C2H4), ethyne (C2H2), and ethane (C2H6) poses a significant challenge in the contemporary chemical industry. In contrast to the energy-intensive high-pressure cryogenic distillation process, zeolite-based adsorptive separation offers a low-energy alternative. This review provides a concise overview of recent advancements in the adsorptive separation of C2H4, C2H2, and C2H6 using zeolites or zeolite-based adsorbents. It commences with an examination of the industrial significance of these compounds and the associated separation challenges. Subsequently, it systematically examines the utilization of various types of zeolites with diverse cationic species in such separation processes. And then it explores how different zeolitic structures impact adsorption and separation capabilities, considering principles such as cation-pi interaction, pi-complexation, and steric separation concerning C2H4, C2H2, and C2H6 molecules. Furthermore, it discusses methods to enhance the separation performance of zeolites and zeolite-based adsorbents, encompassing structural design, modifications, and ion exchange processes. Finally, it summarizes current research trends and future directions, highlighting the potential application value of zeolitic materials in the field of C2H4, C2H2, and C2H6 separation and offering recommendations for further investigation.

关键词： zeolite ethylene ethane cation-pi interaction pi-complexation ADSORPTIVE SEPARATION CARBON-DIOXIDE C2H4 PURIFICATION FRAMEWORKS SORBENTS REMOVAL

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