石油学报(石油加工) ›› 2020, Vol. 36 ›› Issue (4): 866-877.doi: 10.3969/j.issn.1001-8719.2020.04.025

• 综述 • 上一篇    下一篇

分子筛和金属有机骨架材料用于乙烯/乙烷分离的研究进展

边青敏,忻睦迪,邹亢,徐广通   

  1. 中国石化 石油化工科学研究院 石油化工催化材料与反应工程国家重点实验室,北京 100083
  • 收稿日期:2019-07-01 修回日期:2019-09-08 出版日期:2020-07-25 发布日期:2020-09-23
  • 通讯作者: 徐广通,男,教授级高级工程师,博士,从事光谱分析,色谱分析,工业催化剂表征和洞口分析研究,Tel: 010-82368613, E-mail:xugt.ripp@Sinopec.com E-mail:xugt.ripp@sinopec.com
  • 作者简介:第一作者:边青敏,女,硕士研究生,从事可逆性低碳烯烃吸附分享材料的研究
  • 基金资助:
     国家重点研发计划项目(2016YFB0301601)基金资助

Advances in Separation of Ethylene and Ethane With Molecular Sieve and Metal-Organic Frameworks

 BIAN Qingmin, XIN Mudi, ZOU Kang, XU Guangtong   

  1.  State Key Laboratory Catalytic Materials and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
  • Received:2019-07-01 Revised:2019-09-08 Online:2020-07-25 Published:2020-09-23

摘要: 在石油工业中,乙烯和乙烷由于分子尺寸和物化性质相近,具有很大的分离难度。与高能耗的深冷分离方法相比,以多孔材料(如分子筛等)作为吸附材料的吸附分离法可在常温下实现乙烯和乙烷的分离,具有低成本、低能耗等特点,在乙烯和乙烷的低能耗分离方面展现出了很大的潜力。笔者归纳了近30年来研究应用最为广泛的两类多孔材料(分子筛和金属有机骨架材料(MOFs))的晶体和孔道结构、改性方法及其乙烯/乙烷主要分离机理和应用效果。研究对比发现:分子筛类吸附材料对乙烯和乙烷具有较高的分离选择性以及优异的稳定性,但吸附容量较为一般;MOFs由于具有便于调控的骨架以及丰富的孔道结构,对乙烯和乙烷展现出了优异的吸附分离性能,然而其结构稳定性以及分离选择性仍有很大提升空间。依据分子筛和MOFs各自在乙烯/乙烷吸附分离方面表现出的优势,提出了二者在乙烯/乙烷吸附分离方面的研究趋势及发展方向。

关键词: 乙烯, 乙烷, 吸附分离, 分子筛, 金属有机骨架材料MOFs)

Abstract: In the petroleum industry, there is a great challenge in the ethylene/ethane separation because of their similarities in molecular size and physicochemical properties. Compared with the energy-intensive cryogenic distillation, the adsorptive separation using porous materials (such as molecular sieves) as adsorbents can complete the separation of ethylene and ethane at a normal temperature with a low cost and energy consumption, which is found to be a promising energy-saving alternative. In the past 30 years, molecular sieves and MOFs were widely studied in the adsorptive separation of ethylene/ethane. In this review, the crystal and pore structure, modification methods, main separation mechanism, adsorption and separation properties of ethylene and ethane by molecular sieves and MOFs are summarized. The research shows that the molecular sieve-based adsorbents have high separation selectivity and excellent stability for ethylene and ethane, but their adsorption capacities are not that high. MOFs exhibit excellent adsorption and separation properties for ethylene and ethane owing to their well-defined framework and abundant pore structure. However, there is still much room for improvement in structural stability and separation selectivity of MOFs. According to the advantages of molecular sieves and MOFs in the adsorptive separation of ethylene/ethane, the research trends and development directions in the adsorptive separation of ethylene/ethane are proposed.

Key words: ethylene, ethane, adsorptive separation, molecular sieve, metal-organic frameworks(MOFs)

中图分类号: