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Uniformly b-oriented MFI zeolite membrane with variable thickness supported on substrate and preparation method thereof
Uniformly b-oriented MFI zeolite membrane with variable thickness supported on substrate and preparation method thereof
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机译:支撑在基底上的厚度可变的均匀b取向的mfi沸石膜及其制备方法
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摘要
A b-oriented MFI zeolite membrane with variable thickness is provided. The MFI zeolite membrane is composed of zeolite crystals whose b-axes are all uniformly oriented perpendicular to a substrate. Further provided is a method for preparing the MFI zeolite membrane. The method comprises forming zeolite or zeotype molecular sieve seeds with different thicknesses on a substrate and adding the seeded substrate to a gel for the synthesis of an MFI zeolite containing a structure-directing agent to grow zeolite or zeotype molecular sieve crystals thereon. The MFI zeolite membrane overcomes the limitations of prior art zeolite membranes to maximize its applicability.
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