HydrionY Type Molecular Sieve
1.HydrionY Type Molecular Sieve is an aluminosilicate containing H 2.The active component of Y Type in the preparation of FCC catalysts 3.It is often the key to determine the selection of reaction processes 4.There are microporous, mesoporous and macroporous respectively
Product Introduction
HydrionY Type Molecular Sieve
Classification and Characteristics:
They are divided according to the size of the pores, and there are molecular sieves smaller than 2 nm, 2-50 nm and larger than 50 nm, which are called microporous, mesoporous and macroporous respectively.
They can be divided into three categories according to the pore size: microporous, mesoporous and macroporous
Microporous kinds have the advantages of strong acidity, high hydrothermal stability, and special "shape-selective catalysis" performance, but they also have shortcomings such as narrow pore size and large diffusion resistance, which greatly limit their application in macromolecular catalytic reactions.
Mesoporous kinds have the characteristics of high specific surface area, large adsorption capacity, and large pore size, which solve the problem of mass transfer and diffusion to a certain extent, but their weak acidity and poor hydrothermal stability limit their industrial applications.
In order to solve the above problems, researchers have developed a multi-level porous molecular sieve, which combines the advantages of mesoporous and microporous kinds and has immeasurable application prospects in the petrochemical field.
Active Component is the main component of the catalyst, sometimes composed of one substance, sometimes composed of multiple substances.
Classification | Electrical Conductivity | Examples of Catalytic Reactions | Active Components |
Metal | Electrical Conductivity (Oxidation and Reduction) | Selective Hydrogenolysis Selective Oxidation | Fe,Ni,Pt Pd,Cu,Ni,Pt Ag,Pd,Cu |
Transition Metal Oxide Sulfide | Semiconductor (Oxidation and Reduction) | Selective Hydrogenation,Hydrogenolysis Hydrogenolysis Oxidation | ZnOCuONiO Cr₂O3 MoS₂,Cr₂O3 Fe₂O3-MoO3 |
Non-Transition Element Oxide | Insulator (Carbon ion Reaction) (Acid-Base Reaction) | Aggregation, Heterogeneity Cracking Dehydration | Al2O3,SiO2-Al2O3 SiO2-Al2O3,Molecular Sieve Molecular Sieve |
1.The active component of Hydrion Y Type in the preparation of catalytic cracking (FCC) catalysts
2.The active component of HydrionY Type in the preparation of hydrocracking catalysts.
It means that the sodium ions contained in the Y-type molecular sieve framework are replaced by H ions,which is a kind of a molecular sieve with a HY type crystal structure formed.
HydrionY-Type Molecular Sieve is an aluminosilicate containing H in the framework.
Factory:
Packing &Loading:
3.Loading
Surface modification of it and improvement of their hydrothermal stability
Thermal stability and hydrothermal stability are one of the important properties of molecular sieve catalysts to be investigated. Many industrial catalytic reactions require high thermal stability of catalysts, especially hydrothermal stability.
It is often the key to determine the life of catalysts and the selection of reaction processes.
Taking the catalytic cracking reaction of CTE as an example, because the reaction is carried out under the condition of steam, improving the hydrothermal stability of the catalyst is the key to the development of CTE catalysts.
The results show that the stability of the active center of the catalytic material under water vapor can be improved by assembling and modifying the catalytic active center of the porous material with phosphorus oxide compounds and introducing framework heteroatoms.
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