High-efficiency Synthesis Of Molecular Sieve-like Microporous Materials And Their Application In The Environment

With the continuous development of industrial technology,dye industry and chemical industry develop rapidly in our country.With the increasing consumption of fossil energy,a lot of waste gas,waste water,waste residue were produced.According to statistics,every year about 6?7 million tons of dye wastewater into rivers in our country,it's so difficult to solve the problem because of complicated composition,high-concentration and deep colour of it.At the same time,a large number of CO₂ comes from petrochemical industry and catalysis technology which causes the greenhouse effect,the environmental problems has been one of the most important problem which our human need to solve urgently.The article was studied how to solve the series of environmental problems.By leading in different microporous materials,such as zeolite Fe-Y,zeolite X,MOF films,studying of these materials the effect on environmental issues.Zeolites NaY is one of the commonly used heterogeneous catalyst,it has some features like large surface areas,uniform pore size and high thermal stabilities and chemical stabilities,Due to their high catalytic activities,excellent shape-selectivity and can effectively solve the difficult problem of the separation for homogeneous catalysts and reaction mediums,so it's one of the widely used in petrochemical industry catalytic materials,we usually need to modified it to improve its thermal stabilities and catalytic properties.The article using aluminosilicate framework of Zeolite Y which is exchangeable and change Na+ into Fe3+,to prepare iron loaded zeolite based on heterogeneous solid catalyst for the degradation of methylene-blue dye,and find the best condition of degradation through experiments.Zeolites have been widely used in industrial processes due to their uniform and intricate channels,large surface areas,high stabilities and excellent shape-selectivity.New methodology with high efficiency,low energy-cost and easy-fabricating is of great importance for zeolite synthesis.In this paper,a xerogel crystallization method for zeolite X synthesis is proposed from improving the conventional hydrothermal route.And characterize the structure of products.It showed an obvious promotion of products yield within the same reactor compared with the conventional synthesis route of zeolite X.The products exhibited similar physical and chemical properties with that of conventional zeolite X and also good performance in the calcium ion exchange processes.It's an important way to alleviate the greenhouse effect through appropriate technology to separate the air emission which contains CO₂.Compared to traditional separation technology,the membrane separation technology has many advantages like low energy-cost,low-pollution,easy-fabricating,for the mild operational condition,and amplificatory yield.lt has been widely used in the chemical industry fields.Such as environmental protection has been membrane technology for gas separation,it has been one of the most effective method to separate CO₂ and H2 from various industrial waste gas.The article use organic ligands and inorganic metal and combine them to preparation metal-organic framework membrane.Graft modification of organic ligands,uv irradiation and react in metal ions solution.Finally grow crystals in the organic ligands,which was high gas separation.Then character the MOF film and study its properties.