Preparation Chemistry of Inorganic Membranes

摘要: Publisher Summary Membranes are thin films allowing for selective transport of mass species, such as gases, liquids, or ions. The major advantages inorganic membranes compared to polymeric their better thermal, chemical, and mechanical stability higher permselectivity. disadvantages membrane costs an increased difficulty toward making modules with high packing densities. Inorganic will find applications that require permselectivity good chemical thermal beyond what can be offered by membranes. most important properties include permeance selectivity. These microporous mesoporous determined the pore size, porosity, thickness. Chemistry plays a very role in controlling these properties. Microporous amorphous silica prepared acid catalyzed solegel method using alkoxide precursor. intercrystalline defects zeolitic pores crystalline zeolite eliminated narrowed vapor deposition through proper control surface chemistry framework. thick because synthesis gave large metal-organic framework crystals. Synthesis controls size structure ordered materials well orientation