| Film is the key for the technology of membrane separation, the chemistry, the constitute, and the structure of material of membrane play an important part in separation characterity of membrane,also are important contents in the technology of membrane. Ideally, membrane should be large-scale ordered and defect-free, exhibiting high thermal, chemical, and mechanical stabilities, selectivity, and permeability. The membranes conclude two kinds depends on different membrane material: inorganic membrane and polymer membrane. The materials of inorganic membrane conclude metal, metallic oxide, glass, silicate and zeolite and so on. Compare with polymer membrane, inorganic membrane have many advantages: such as high thermal, chemical, and mechanical stabilities, not easy to plasticization, easy to control the size of the pore and the distributing of pore size. Then we can further control the selectivity and permeability of the membrane.For satisfy the demand of separation in industry, we must synthesis the large-scale ordered and defect-free inorganic membrane, Molecular sieve membrane is one of the developing inorganic membranes in recent years. Molecular sieve membrane with unique properties, such as uniform micropores, ion exchange, tunable-Si/Al, high temperature stability, solvent resistance, hydrophilicity-hydrophobicity, catalysis, and so on, which is an excellent membrane material to achieve separation and catalysis in molecule level, have been widely used in separation, membrane reaction, catalysis, sensor, micro-electron areas. But for satify the require of separation, we still need more research. This thesis focuses on the synthesis of MFI molecular sieve film with different methods and the investigation of the influence of the synthesis conditions on the morphologies of molecular sieve films. Also, we studied the separation properties of some other molecular sieve films. The permeation in membrane separation is most important, so we try our best to improve the permeation. Another inorganic material for synthesis membrane is Metal-organic-frames, MOFs with unique properties, such as uniform micropores; construct tailored frameworks with desired properties, inorganic zeolite membranes, have been shown to be efficient for gas separation, Nevertheless difficulties to functionalize the pores and thus control their flux properties have limited their universal application. The versatility of MOFs permits may allow these limitations to be overcome and provide new routes to synthesis tunable supports for gas separation.This thesis focuses on the synthesis of MOFs film with different methods and the investigation of the influence of the synthesis conditions on the morphologies ofMOFs films. Also, we studied the separation properties of some other MOFs films. The stainless-steel-net-imbeded MFI zeolite membrane has been successfully synthesized by hydrothermal method. A hierarchical growth mechanism for the membrane formation can be deduced according to the XRD and SEM results. Following the encouraging characterization results, gas separation studies were carried out on the high thermal stable and large-scale ordered MFI membrane. The calcined membrane was fixed in a gas separation setup, and used for separation studies with different gas mixtures such as CO2/H2, CO2/N2, and CO2/CH4. the permeation of CO2 (around 7×10-7 mol.m-2.s-1.pa-1) is much higher than those of other gases in the single systems, we calculate the idea separation factor according the formula a = JA/JB, the idear separation factor of CO2/H2,CO2/CH4,CO2/N2 are 3.9, 8.55, 13.4 respectively. According the Knudsen diffusion formula, are 0.21, 0.6 and 0.8, obviously this diffusion is not controlled by Knudsen diffusion. We also text the separation factor of CO2/N2 in the mixture systems, (68.7) Compared with the conventional zeolite membranes supported by other substrates, the stainless steel net imbedded zeolite silicalite-1 membrane has high thermal and mechanical stabilities, large-scale ordered, and exhibited high permeation flux and excellent permeation selectivity for CO2. Such high-efficient zeolite membrane could be used to separate, recycle, and reuse CO2 exhausted from coal-fired power plants, chemical factories, and natural gas-sourced amine plants.A very thin, high quality, defect-free, ordered zeolite MFI film supported on a coarse glass frit has been synthesized. We chose to use coarse glass frits as the support. Funnels containing coarse glass frits with various specifications are inexpensive and are commercially available. The main advantage of using a glass frit support for a zeolite membrane is that the thermal expansion coefficients between the two are very similar as both contain SiO2. Other benefits include having a high capacity and being both acid- and alkali-resistant. The pore size of the support used here is significantly larger that that used in previously reported work. Therefore it is reasonable to expect that the frit supported zeolite membranes could resist cracking, temperature cycling and possess high mechanical stability and high performance for the desalination of seawater. The separation properties of seawater by coarse glass frit supported zeolite membranes are also reported. For improveing the flux, Details of a new method called"water-filling"used in preparing high quality zeolite membranes is given herein. The result of desalination is the salt concentration has been significantly reduced with a high flux (20 times greater than previous reports). From the Na+ concentration, it can be seen that the concentration of Na+ reduces from 3.5% to 0.0346% after filtration by zeolite MFI membrane. It was observed that the concentration of a wide variety of ions including Na+, Mg2+, K+, Ca2+ and Fe3+ can be significantly reduced with a high flux (2.09 kg/m2h). The ion concentration in the permeate solution is close to that of distilled water in the proceed of desalination. This membrane was observed to have several advantages when compared to other techniques used for water desalination: 1) the coarse glass frit support is mainly made up of SiO2, so it is not only durable and solid, but also the membrane does not crack when it is calcined to remove the organic template; 2) the membrane exhibits a high permeation flux and excellent permeation selectivity for water; 3) the setup is simple and cheap. We propose that such a multi-step coarse glass frit setup can be effective for large-scale seawater desalination. Futher more, the separation experiment betweem ethanol and water still be carried out. It is also proved the membrane has high quality.The copper net supported Cu3 (BTC) 2 membrane has been successfully synthesized by means of a"twin copper source"technique. By oxidizing the copper net before the hydrothermal synthesis, homogeneous nucleation sites are formed for the continuous film growth. Both the ion of Cu2+ on the copper net and in reaction solution provide metal source for crystal growth. Following the successful construction of the MOF based membrane, gas separation studies were investigated. Separation studies on gaseous mixtures (H2/CO2, H2/CH4 and H2/N2) using the membrane revealed that the membrane possesses high permeability and selectivity for H2 over CO2, N2 and CH4,The permeation flux of H2 is around 1×10-1 mol.m-2.s-1, the separation factor of H2/ CO2,H2/CH4,H2/N2 are 6.8,6 and 7 respectively. Compared with the conventional zeolite membranes, the copper net supported Cu3 (BTC) 2 membrane exhibits a higher permeation flux and excellent permeation selectivity for H2. Such characteristics of the copper net supported Cu3(BTC)2 membrane offer great potential toward applications such as separating, recycling, and reusing H2 exhausted from steam reforming of natural gas. Continuous high quality copper-net-supported MOF-5 membranes have been synthesized by vapor diffusion of an organic amine. The membrane formation mechanism is discussed which is consistent with our experimental observations. The net surface is coated via the -HS groups by immersion in the reaction solution. Crystallization occurs when the SBUs of MOF-5 nuclei selectively bind to carboxylate-terminated SAMs. This initially results in a MOF coated net but with time the net channels reduce in size as the crystals grow. Separation studies on gaseous mixtures (H2/CO2, H2/CH4 and H2/N2) using the membrane revealed that the membrane possesses high permeability and selectivity for H2 over CO2, N2 and CH4.The fifth serial of lanthanide metal organic carboxylate frameworks with excellent thermal stability, Ln(BTC)(H2O) (DMF) [Ln = Sm (19), Eu (20), Tb (21), Dy (22)] have been synthesizd under mild conditions. Compound 20A shows a high BET surface area, 665 m2/g, a narrow pore size distribution and could be anticipated as gas storage materials to take up hydrogen and carbon dioxide. The metal centers of compound 20A is available Lewis acid metal sites for they are coordinative unsaturation. Influences of composition of the staring reaction solution, stirring time and different solvent on the morphology of crystals were investigated and discussed. We can control the size of crystal though change the ratio of two solvents.
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