High-Performance Zeolitic Hollow-Fiber Membranes by a Viscosity-Confined Dry Gel Conversion Process for Gas Separation

Shaowei Yang; Byunghyun Min; Qiang Fu; Christopher W Jones; Sankar Nair

doi:10.1002/anie.202204265

High-Performance Zeolitic Hollow-Fiber Membranes by a Viscosity-Confined Dry Gel Conversion Process for Gas Separation

Angew Chem Int Ed Engl. 2022 Jul 18;61(29):e202204265. doi: 10.1002/anie.202204265. Epub 2022 May 31.

Authors

Shaowei Yang^{1

2}, Byunghyun Min¹, Qiang Fu¹, Christopher W Jones¹, Sankar Nair¹

Affiliations

¹ School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA 30332, USA.
² Current address: Chemical and Biomedical Engineering Department, Cleveland State University, Cleveland, OH 44115, USA.

PMID: 35536251
DOI: 10.1002/anie.202204265

Abstract

Zeolite membranes show great potential for gas and hydrocarbon separations, but high manufacturing cost has been one of the main hurdles in their industrial application. Here we demonstrate a method termed viscosity-confined dry gel conversion (VCDGC) for zeolite hollow fiber membrane fabrication. We demonstrate in detail the VCDGC synthesis of small-pore CHA zeolite membranes. Extensive permeation measurements reveal that dry gel-processed CHA zeolite hollow fiber membranes have excellent gas and hydrocarbon separation characteristics well exceeding or comparable to current membranes. Medium-pore MFI membranes are also fabricated, and their favorable hydrocarbon separation characteristics indicate the versatility and reliability of the VCDGC method.

Keywords: CHA; Gas Separation; Hollow Fiber; MFI; Zeolite Membrane.

Abstract

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