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Silicalite-1 Zeolite Membrane and Surface Modification

Author: WangZhouXiang
Tutor: ZuoWenFu；YuJiHong
School: Jilin University
Course: Inorganic Chemistry
Keywords: Silicalite-1 membrane Situ crystallization Microwave Orientation Hydrophobic
CLC: TQ424.25
Type: Master's thesis
Year: 2010
Downloads: 123
Quote: 0
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Abstract


Zeolite Membranes are widely used in adsorption, separation , catalysis , optoelectronics information and other fields. Highly oriented growth of Silicalite-1 zeolite membrane can reduce inter- crystal defects in zeolite membranes , thereby enhancing the zeolite membrane separation selectivity . In addition, the epitaxial growth of Silicalite-1 zeolite membrane greatly affect optical and electrical properties of the membrane . This paper studies preparing highly oriented Silicalite-1 Zeolite Membranes methods and strategies and molecular sieve high hydrophobicity of the membrane surface modification methods discussed Silicalite-1 zeolite crystal film highly oriented mechanisms . Situ hydrothermal crystallization method , were prepared on glass substrate surface smoothness , good continuity and Highly b-Oriented Silicalite-1 Zeolite Membrane of . By modulating and optimized synthetic sol composition and synthesis parameters such as reaction time , to achieve the Silicalite-1 zeolite height of the surface of the substrate and the film microstructure oriented growth regulation . The use of microwave situ hydrothermal crystallization method, by HF etching were prepared on glass substrate of Highly b-Oriented Silicalite-1 zeolite membrane . The effects of reaction time and the substrate surface roughness on the morphology of zeolite membranes , as well as the nature of the substrate on the impact of the film micro-crystals . Contrast in the traditional oven heating and microwave heating conditions prepared Silicalite-1 zeolite membrane morphology, membrane integrity and orientation of the crystal . Using a simple and effective method was prepared with a high hydrophobic surface Silicalite-1 zeolite membrane , the prepared membranes were moist and HF corrosion tests. The results show a significant zeolite film surface hydrophobicity, hydrophobic membranes have some corrosion protection.

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CLC: > Industrial Technology > Chemical Industry > Reagents and the production of pure chemicals > Adsorbent > Inorganic adsorbent > Used as artificial silicate adsorbent
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