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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
Authors to whom correspondence should be addressed.
Membranes 2020, 10(3), 41;
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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