Shaping of metal-organic frameworks through a calcium alginate method towards ethylene/ethane separation

doi:10.1016/j.cjche.2021.08.010

中国化学工程学报 ›› 2022, Vol. 42 ›› Issue (2): 17-24.DOI: 10.1016/j.cjche.2021.08.010

• Recent Advances in Adsorptive Separation Materials and Technologies • 上一篇下一篇

Shaping of metal-organic frameworks through a calcium alginate method towards ethylene/ethane separation

Jinlong Li¹, Xiaoqing Wang¹, Puxu Liu¹, Xiaohua Liu¹, Libo Li^1,2, Jinping Li^1,2

1. College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan 030024, China;
2. Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China

收稿日期:2021-04-29 修回日期:2021-08-11 出版日期:2022-02-28 发布日期:2022-03-30
通讯作者: Libo Li,E-mail:lilibo908@hotmail.com
基金资助:
We acknowledge the financial support from the National Natural Science Foundation of China (Nos. 21908153, 21922810 and 21878205).

Shaping of metal-organic frameworks through a calcium alginate method towards ethylene/ethane separation

Jinlong Li¹, Xiaoqing Wang¹, Puxu Liu¹, Xiaohua Liu¹, Libo Li^1,2, Jinping Li^1,2

1. College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan 030024, China;
2. Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China

Received:2021-04-29 Revised:2021-08-11 Online:2022-02-28 Published:2022-03-30
Contact: Libo Li,E-mail:lilibo908@hotmail.com
Supported by:
We acknowledge the financial support from the National Natural Science Foundation of China (Nos. 21908153, 21922810 and 21878205).

摘要/Abstract

摘要： The separation of ethylene and ethane is a crucial, challenging and cost-intensive process in chemical engineering. Metal-organic frameworks (MOFs) are a class of novel porous adsorbents used for the separation of ethylene/ethane mixtures. However, MOFs are normally crystalline powders that cause multiple problems, such as dust, abrasion and heat/mass loss, as well as significant pressure drops on the adsorption bed resulting in a sudden stop in production. To solve these issues, we have prepared four different sphere-shaped adsorbents, including Mg-gallate, Co-gallate, MUV-10(Mn) and MIL-53(Al) using a calcium alginate method to achieve excellent ethylene/ethane separation performance. The performance of the sphere-shaped adsorbents has been validated using mechanical strength measurements, powder X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, gas adsorption isotherms and dynamic breakthrough experiments. The excellent mechanical strength of these sphere-shaped adsorbents meets the criteria for industrial application in gas separation. Thus, the energy consumption and operating cost will be further reduced in the ethylene production process. We believe that this shaping method will open a prosperous route to the development of MOFs toward higher technology levels and their commercial application.

关键词: Metal-organic frameworks, Alginates, Shaping, Mechanical properties, Adsorption, Separation

Abstract: The separation of ethylene and ethane is a crucial, challenging and cost-intensive process in chemical engineering. Metal-organic frameworks (MOFs) are a class of novel porous adsorbents used for the separation of ethylene/ethane mixtures. However, MOFs are normally crystalline powders that cause multiple problems, such as dust, abrasion and heat/mass loss, as well as significant pressure drops on the adsorption bed resulting in a sudden stop in production. To solve these issues, we have prepared four different sphere-shaped adsorbents, including Mg-gallate, Co-gallate, MUV-10(Mn) and MIL-53(Al) using a calcium alginate method to achieve excellent ethylene/ethane separation performance. The performance of the sphere-shaped adsorbents has been validated using mechanical strength measurements, powder X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, gas adsorption isotherms and dynamic breakthrough experiments. The excellent mechanical strength of these sphere-shaped adsorbents meets the criteria for industrial application in gas separation. Thus, the energy consumption and operating cost will be further reduced in the ethylene production process. We believe that this shaping method will open a prosperous route to the development of MOFs toward higher technology levels and their commercial application.

Key words: Metal-organic frameworks, Alginates, Shaping, Mechanical properties, Adsorption, Separation

Jinlong Li, Xiaoqing Wang, Puxu Liu, Xiaohua Liu, Libo Li, Jinping Li. Shaping of metal-organic frameworks through a calcium alginate method towards ethylene/ethane separation[J]. 中国化学工程学报, 2022, 42(2): 17-24.

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Shaping of metal-organic frameworks through a calcium alginate method towards ethylene/ethane separation

Shaping of metal-organic frameworks through a calcium alginate method towards ethylene/ethane separation

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