TY - JOUR
T1 - Synthesis of ZIF-8 Membranes on-Alumina Supports for Separation of Propylene/Propane Gas Mixture
AU - Banihashemi, Fateme
AU - Lin, Jerry Y.S.
N1 - Funding Information:
The authors gratefully acknowledge the financial support from the National Science Foundation of the United States (CBET-1511005, CBET-2031087). The authors thank Defei Liu for experiments on synthesis and characterization of ZIF-8 membranes on α-alumina supports.
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/3/23
Y1 - 2022/3/23
N2 - Zeolitic imidazolate framework-8 (ZIF-8) membranes have shown promising potential for the separation of industrially important propylene/propane mixtures. For industrial applications, it is necessary to synthesize a thin and defect-free ZIF-8 membrane with good integrity on scalable supports. In this work, we report the synthesis of ZIF-8 membranes on the sol-gel derived mesoporous γ-Alumina layer coated on top of the α-Alumina support. Thin (2.5 μm), high quality, and stable ZIF-8 membranes can be grown on the γ-Alumina support grafted with 3-glycidoxypropyltrimethoxysilane (GLYMO) by the seeded secondary growth method. Propylene/propane equimolar mixture separation experiments were conducted to test the separation performance of membranes. Compared to the ZIF-8 membranes on the bare macroporous α-Alumina support, ZIF-8 membranes prepared on the γ-Alumina coated α-Alumina support show much better separation characteristics, with a maximum propylene/propane separation factor of 225 and propylene permeance of 9.65 × 10-9mol m-2s-1Pa-1. The ZIF-8 membrane synthesized on the scalable γ-Alumina coated α-Alumina support exhibits separation characteristics and stability similar to the best-performing ZIF-8 membranes on alumina supports with complex synthesis procedures difficult to scale up.
AB - Zeolitic imidazolate framework-8 (ZIF-8) membranes have shown promising potential for the separation of industrially important propylene/propane mixtures. For industrial applications, it is necessary to synthesize a thin and defect-free ZIF-8 membrane with good integrity on scalable supports. In this work, we report the synthesis of ZIF-8 membranes on the sol-gel derived mesoporous γ-Alumina layer coated on top of the α-Alumina support. Thin (2.5 μm), high quality, and stable ZIF-8 membranes can be grown on the γ-Alumina support grafted with 3-glycidoxypropyltrimethoxysilane (GLYMO) by the seeded secondary growth method. Propylene/propane equimolar mixture separation experiments were conducted to test the separation performance of membranes. Compared to the ZIF-8 membranes on the bare macroporous α-Alumina support, ZIF-8 membranes prepared on the γ-Alumina coated α-Alumina support show much better separation characteristics, with a maximum propylene/propane separation factor of 225 and propylene permeance of 9.65 × 10-9mol m-2s-1Pa-1. The ZIF-8 membrane synthesized on the scalable γ-Alumina coated α-Alumina support exhibits separation characteristics and stability similar to the best-performing ZIF-8 membranes on alumina supports with complex synthesis procedures difficult to scale up.
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U2 - 10.1021/acs.iecr.1c04986
DO - 10.1021/acs.iecr.1c04986
M3 - Article
AN - SCOPUS:85126567516
SN - 0888-5885
VL - 61
SP - 4125
EP - 4133
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 11
ER -