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Multilayer, micro- and nanoporous membranes with controlled pore sizes for water separation and method of manufacturing thereof
Multilayer, micro- and nanoporous membranes with controlled pore sizes for water separation and method of manufacturing thereof
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机译:用于水分离的孔径可控的多层,微孔和纳米孔膜及其制造方法
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摘要
The present invention relates to design and manufacture of multilayer sintered membranes made from metals and inorganic compounds (ceramics, silicate, clay, zeolites, phosphates, etc.). The membranes are designated for separation of water. They comprise at least one layer having nanopores commensurable with the size of water molecules. The membranes comprise: (a) supporting metallic layer having pore size 1-500 microns, (b) metallic interlayer having pore size 2 micron, (c) sublayer with local regular protrusions of the interlayer into the supporting layer to increase service life of the membrane, and (d) one nanoporous ceramic or metallic top layer having pore size in the range of 1-15 angstroms. The invented design and method allow the manufacture of cost-effective multilayer membranes containing nanoporous layer with controlled pore sizes in each layer and optimal morphology of pores that provides selective transport of molecules during filtration and separation of liquids.
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