Mixed matrix membranes (MMMs) could provide a solution to the permeability and selectivity trade-off in polymeric membranes and bridge the gap with inorganic membranes. MMM could offer the physicochemical stability of a ceramic material while ensuring th
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沸石的一般化学式为：AmBpO2p·nH2O，结构式为A(x/q) [ (AlO2)x (SiO2)y ] n(H2O) 其中：A为Ca、Na、K、Ba、Sr等阳离子，B为Al和Si，p为阳离子化合价，m为阳离子数，n为水分子数，x为Al原子数，y为Si原子数，(y/x)通常在1～5之间，(x+y)是单位晶胞中四面体的个数。当然含有氧...
合成沸石（1948to1955）开辟了催化的分子筛时代 FirstbyBarrerandMilton TY材料科学与工程学院2009研究生 分子筛的一般介绍 Landmarks YforFCCZSM-5AlPO4&SAPOs (1960s)(1970s)(1980s)(1980s)(1990s)S.T.Wilson,B.M.Lok,C.A.Messina,T.R.CannanandE.M.FlanigenJ.Am....
However, the T atom could be replaced by other heteroatoms, such as P, Fe, B, Ga, Ti, Ge, etc. The chemical composition of a zeolite is: Mx/n[(AlO2)x(SiO2)y]·zH2O where M is the cation, n is the valence of the cation, z is the number of water molecules per unit cell, ...
Fast spinning 29Si NMR spectra of zeolite type STF, (A) 1H → 29Si CP MAS spectrum, 15 kHz spinning rate, and 3 ms contact time (B) 19F → 29Si rotor-synchronized refocused INEPT experiment, (C) 19F → 29Si CP MAS spectrum, 15 kHz spinning rate, and 0.4 ms contact time....
a) highlight the obtention of a nano-scale zeolite Y with an environmentally friendly method, characterized by a high Si/Al ratio, temperature ramps during nucleation and crystallization and a short crystallization time, (b) determine its stability when subjected to treatments post-synthesis, such ...
C Ratnasamy,A Murugkar,S Padhye,S.A. Pardhy 摘要: Cu (salen) complex encapsulated in zeolite Y is characterized by elemental analysis, IR, UV-vis and ESR spectroscopy and is shown to be a catalyst for the selective oxidation of cyclohexanol to cyclohexanone in the presence of H2O2 under...
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(a) MY agar medium (in g/l) Soya peptones 5 Yeast extract 3 Malt extract 3 Glucose 10 Agar 20 (b) T G Y agar medium (produced by the Pasteur Institute) (in g/l) Peptones 5 Yeast extract 2.5 Glucose 1 Agar 20 (c) Bennett agar medium (in g/l) Peptones 1 Meat extract 1 ...