Dual‐templating surface gel into thin SSZ‐13 zeolite membrane for fast selective hydrogen separation

Rong, Huazhen, Guan, Yixing, Li, Jun, Li, Ziyi, Ma, Dan, Zhang, Jingjing, Liu, Xiaoteng and Zou, Xiaoqin (2022) Dual‐templating surface gel into thin SSZ‐13 zeolite membrane for fast selective hydrogen separation. Aggregate. e275. ISSN 2692-4560 (In Press)

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Official URL: https://doi.org/10.1002/agt2.275

Abstract

Abstract: Highly permeable zeolite membranes are desirable for fast gas separation in the industry. Reducing the membrane's thickness is deemed to be an optimal solution for permeability improvement. Herein, we report the synthesis route of thin SSZ‐13 zeolite membranes via the conversion of template‐contained surface gels. The synthesis gel is fully crystallized into crack‐free SSZ‐13 membranes assisted with dual templates of N, N, N‐trimethyl‐1‐adamantammonium hydroxide (TMAdaOH) and tetraethylammonium hydroxide (TEAOH). The specific functions of TMAdaOH for structure directing and TEAOH for crystallization regulating are well discussed. Thin surface gel layer is impregnated onto porous alumina with subsequent crystallization into a 500 nm thick membrane. This submicron‐thick membrane exhibits high H2 permeance with 50 × 10−8 mol s−1 m−2 Pa−1 during hydrogen separation. Meanwhile, the separation factors are retained around 23.0 and 31.5 for H2/C2H6 and H2/C3H8, respectively. This approach offers a possibility for obtaining high‐quality zeolite membranes for efficient hydrogen separation.

Item Type: Article
Additional Information: Funding information: National Natural Science Foundation of China. Grant Numbers: 21971035, 22131004, U21A20330 “111” Program. Grant Number: B18012 Fundamental Research Funds for the Central Universities. Grant Number: JGPY202103
Uncontrolled Keywords: gas separation, hydrogen selectivity, zeolite membrane
Subjects: H300 Mechanical Engineering
H700 Production and Manufacturing Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 03 Oct 2022 10:41
Last Modified: 03 Oct 2022 10:45
URI: https://nrl.northumbria.ac.uk/id/eprint/50263

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