molecular sieve grace

Zeolite is a natural zeolite powder molecular sieve grace ground from rock, the color is white. Can remove 95 percent of ammonia, water purification, to ease transfer water phenomenon.

Superficial knowledge of the porous molecular sieve material

Porous psa oxygen generator molecular sieve materials are an important class of inorganic non-metallic advanced materials in the fields of petrochemical, materials science, energy storage, environmental protection and management, bio-medicine, with a broad expansion of space and good prospects.  With the deepening of research work, according to the actual needs of human beings to design and synthesize more features excellent performance molecular sieve materials, as people's living standards improve, the development of human civilization and social progress, play an important role. 

 In recent years, our country has made significant progress in zeolite synthesis and preparation as well as the catalytic converter and other molecular sieve powder catalytic materials research by the national attention, since the "Plan", has won a major project of the National Natural Science Foundation, the National Climbing Program and the state's major Basic Science Program (973) and other project support, has made a series of major scientific and technological achievements.  Especially Zeolite synthesis of mesoporous materials research and other fields are at the international forefront.

Research on small grains ZSM-5 zeolite catalyst stability

 Small crystal molecular sieves 5a stability and its good resistance to carbon deposition capacity.
 Looking at the results from the test response analysis of methanol in different grain sizes of ZSM-5 zeolite on the conversion, the amount of coke ZSM-5 zeolite surface even a small amount of coke grains is higher than a large grain of ZSM-5 zeolites molecular sieve catalyst life of small grains larger than grains of zeolite long.
 This phenomenon is due to the small grain size of ZSM-5 zeolite with a large pore volume and appearance of the area and the outer surface of the acid sites and more features, large pore volume of the catalyst can effectively increase the ability of anti-deactivation, more external surface acid sites can during the reaction to ensure that there are more active center can be used; the contrary, the large grainsmolecular sieve powder with a small external surface area ratio of inner surface area and the average particle diameter is large, the molecular diffusion resistance is large, pores are formed in the macromolecular product is not easily diffuse out, thereby blocking pores, reducing the effective utilization of the acid center, to accelerate catalyst deactivation.

 More detailed information please ZSM-5 zeolite molecular sieve attention largest production base in Shandong Qilu Hua letter Hi-Tech Co., Ltd. ......

Aluminosilicate compound

Aluminosilicate compound having a cubic lattice, the alumina is mainly composed of the open connection through an oxygen bridge skeleton structure, there are a lot of uniform pore size and pore structure grace molecular sieves  are arranged neatly, the inner surface area of ​​a large hole. Also contains a lower price and ionic radius larger metal ions and compounds of state water. As water molecules in the continuous loss of heat, molecular sieve manufacturers  but the same crystal framework structure, the formation of many of the same size of the cavity, the cavity of the same diameter,molecular sieve drying, there are many pores are connected, the diameter of these small pores of uniform size, pore ratio can adsorption of molecules having a small diameter into the interior cavities in the regeneration of molecular sieves  past, but have the molecules larger than the pore exclusion, different shapes can thus molecular diameters, different degrees of polarity of the molecule, molecules having different boiling points and different degree of saturation of molecular separation open, that has the effect of "screening" of molecules, so called molecular sieves. Currently zeolite widely used in metallurgy, chemical industry, electronics, petrochemical and natural gas industries.

Solvent absorption method often used as an absorbent material glycols

Solvent absorption method often used as an absorbent material glycols, having a hydroxyl group and an ether natural gas treatment processes  bond in the molecular structure of the glycol, to form hydrogen bonds with water, have a strong affinity for water,molecular sieve drying having a high dehydration depth.
Glycol dehydration in natural gas industry has been successfully applied are: ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TEG) and tetraethylene glycol (TREG).  molecular sieves msds   Glycol gas dehydration is the first for diethylene glycol, due to restrictions by the regeneration temperature, poor liquid mass fraction is generally about 95%, dew point down low; while TEG regeneration easy, poor liquid mass fraction of 98% ~ 99%, with greater dew point depression and low operating costs, has been widely used.

regeneration of molecular sieves

The new machine factory oxygen concentration should be 90%, you must have accumulated timing functions, molecular sieve beads  with the oxygen concentration condition monitoring system, the sound produced under the maximum flow does not exceed 60 decibels.
A desiccant to absorb moisture from the atmosphere, in addition to a liquid, its drying principle is physically adsorbed water molecules in the structure itself, or the absorption  regeneration of molecular sieves  of water molecules through chemical means, and changes its chemical structure, into another substances.
Common desiccants are lime molecular sieve drying desiccant chemisorption, magnesium chloride, calcium chloride, phosphorous pentoxide, or soda lime, silicic acid, which are chemically absorb water molecules and change its chemical structure into another material.

molecular sieve ethanol dehydration

The use of advanced PSA (pressure swing adsorption) air separation oxygen technology is based on attracting agent (zeolites) differences in air oxygen, nitrogen adsorption capacity to achieve the separation of oxygen, nitrogen, high purity oxygen can be extracted directly from the air , is the only oxygen machine with international standards and national standards. The new machine factory oxygen concentration should be 90%, molecular sieve ethanol dehydration  you must have accumulated timing functions, with the oxygen concentration condition monitoring system, the sound produced under the maximum flow does not exceed 60 decibels.
Because it contains a large ion radius and a low price of water molecules in the water is continuously heated and combined state of the loss of metal ions, but the same crystal framework structure, the formation of many of the same size of the cavity, the diameter of the Pressure swing adsorption technology cavity there are many connected to the same pore, the diameter of these small pores of uniform size, can smaller than the pore diameter of the molecules adsorbed to the interior of the cavities, while the molecules larger than the pore exclusion, different shapes can thus molecular diameter, a different degree of polarity of the molecules, molecules having different boiling points and different degree of saturation to separate molecules, which has the effect of "screening" elements, so called molecular sieves. Zeolite is widely used in metallurgy, chemical industry, electronics, petrochemical and natural gas industries.