Статья

A molecular sieve with ultrafast adsorption kinetics for propylene separation

Jiyu CuiKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310012, P.R. ChinaZhaoqiang ZhangDepartment of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, SingaporeLifeng YangKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310012, P.R. ChinaJianbo HuEngineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, P.R. ChinaAnye JinKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310012, P.R. ChinaZhenglu YangKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310012, P.R. ChinaYue ZhaoCoordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. ChinaBiao MengState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P.R. ChinaYu ZhouState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P.R. ChinaJun WangSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P.R. ChinaYun SuSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P.R. ChinaJun WangSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P.R. ChinaXili CuiEngineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, P.R. ChinaHuabin XingEngineering Research Center of Functional Materials Intelligent Manufacturing of Zhejiang Province, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, P.R. China

2023en

ABI

Аннотация

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 .

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Идентификаторы

DOI: 10.1126/science.abn8418

Цитирования и источники

Цитирований: 4Использованных источников: 0

Показатели — AkademScholar