A molecular sieve with ultrafast adsorption kinetics for propylene separation-Reference-Cited by-同舟云学术

A molecular sieve with ultrafast adsorption kinetics for propylene separation

Published:2024-01-12 Issue:6679 Volume:383 Page:179-183
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Cui Jiyu¹^ORCID,Zhang Zhaoqiang²^ORCID,Yang Lifeng¹^ORCID,Hu Jianbo³,Jin Anye¹,Yang Zhenglu¹^ORCID,Zhao Yue⁴^ORCID,Meng Biao⁵^ORCID,Zhou Yu⁵^ORCID,Wang Jun⁵^ORCID,Su Yun⁶^ORCID,Wang Jun⁶^ORCID,Cui Xili¹³^ORCID,Xing Huabin¹³^ORCID

Affiliation:

1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310012, P.R. China.

2. Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore.

3. Engineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, P.R. China.

4. Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China.

5. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China.

6. School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P.R. China.

Abstract

The design of molecular sieves is vital for gas separation, but it suffers from a long-standing issue of slow adsorption kinetics due to the intrinsic contradiction between molecular sieving and diffusion within restricted nanopores. We report a molecular sieve ZU-609 with local sieving channels that feature molecular sieving gates and rapid diffusion channels. The precise cross-sectional cutoff of molecular sieving gates enables the exclusion of propane from propylene. The coexisting large channels constituted by sulfonic anions and helically arranged metal-organic architectures allow the fast adsorption kinetics of propylene, and the measured propylene diffusion coefficient in ZU-609 is one to two orders of magnitude higher than previous molecular sieves. Propylene with 99.9% purity is obtained through breakthrough experiments with a productivity of 32.2 L kg −1 .

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Link

https://www.science.org/doi/pdf/10.1126/science.abn8418

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