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Open AccessArticle

Effects of Seed Crystals on the Growth and Catalytic Performance of TS-1 Zeolite Membranes

State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
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Membranes 2020, 10(3), 41; https://doi.org/10.3390/membranes10030041
Received: 14 February 2020 / Revised: 6 March 2020 / Accepted: 7 March 2020 / Published: 13 March 2020
(This article belongs to the Section Membrane Preparation and Characterization)
Dense and good catalytic performance TS-1 zeolite membranes were rapidly prepared on porous mullite support by secondary hydrothermal synthesis. The properties of seed crystals were very important for the preparation of high-catalytic performance TS-1 zeolite membranes. Influences of seed crystals (Ti/Si ratios, size, morphology, and zeolites concentration of the seed suspension) on the growth and catalytic property of TS-1 zeolite membranes were investigated in details. High Ti/Si ratio, medium-size, and morphology of the seed crystals were critical for preparing the high-performance TS-1 zeolite membrane. Compared with the bi-layer TS-1 zeolite membrane (inner and outer of the mullite tube), the mono-layer TS-1 zeolite membrane had a better catalytic performance for Isopropanol IPA oxidation with H2O2. When the Ti/Si ratio, size, and morphology of the TS-1 zeolites were 0.030, 300 nm, ellipsoid, and the zeolites concentration of the seed suspension was 5%, the IPA conversion, and flux through the TS-1 zeolite membrane were 98.23% and 2.58 kg·m−2·h−1, respectively. View Full-Text
Keywords: TS-1 zeolite membrane; seed crystals; catalytic oxidation; mono-layer TS-1 zeolite membrane; seed crystals; catalytic oxidation; mono-layer
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MDPI and ACS Style

Ding, W.; Xiang, S.; Ye, F.; Gui, T.; Li, Y.; Zhang, F.; Hu, N.; Zhu, M.; Chen, X. Effects of Seed Crystals on the Growth and Catalytic Performance of TS-1 Zeolite Membranes. Membranes 2020, 10, 41.

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