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[Chemical Knowledge]：Molecular sieve adsorption principle, why is it so important in the chemical, pharmaceutical and petroleum industries?

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Molecular sieve is a kind of nano-scale material with special structure. Its microporous structure enables it to screen and separate various molecules. This selective adsorption is the key application of molecular sieve in chemical, pharmaceutical and petroleum industries. This article will introduce the molecular sieve adsorption principle, characteristics and applications in various fields.

molecular sieve adsorption principle of the working principle of

molecular sieve is made of silicate and aluminate inorganic compounds with microporous structure of the material, its name comes from its specific selective adsorption of specific compounds. Molecular sieves typically have a pore size of 0.2 nm to 1.2 nm, which allows them to trap separate molecules or ions. The selective adsorption properties of molecular sieves in substances with similar molecular weights have been widely used, such as alkane separation, liquid molecular separation, gas phase molecular separation and molecular transfer in catalytic reactions. The characteristics of

molecular sieve

molecular sieve due to its unique microporous structure, there are some important characteristics:

1. has a huge surface area, higher than the surface area of the molecular sieve by selective adsorption of more molecules.

2 has a stable structure, its stability comes from its special structure, so they can still maintain a stable microporous structure under high temperature and high pressure, showing good chemical resistance and thermodynamic properties.

3 with selective adsorption, molecular sieve can selectively adsorb similar molecular mass of the solute, but for the chemical substance is relatively similar to the molecule has a strong specificity. When a molecule or ion is large enough to not enter the microporous structure of the molecular sieve, they cannot be separated.

molecular sieve in the chemical, pharmaceutical and petroleum industry application

1. application

in the chemical industry in the chemical industry, molecular sieve is widely used in catalyst and separation agent, in the petroleum refining process, they are also indispensable process raw materials. Molecular sieve in the chemical reaction process as a catalyst, in the sublimation, separation, removal of impurities and drying can also improve the efficiency of chemical reactions, reduce costs.

2. Application of

in the pharmaceutical industry In the pharmaceutical industry, molecular sieve selective adsorption technology is widely used, this is because the molecular sieve can efficiently screen out harmful components, especially in drug production, molecular sieve can improve the purity, reduce the preparation cost, guarantee the quality of the product.

3. Applications in the Petroleum Industry
In the
petroleum industry, molecular sieves are capable of separating thin oils and heavy impurities. Molecular sieves are also widely used in oil and gas separation upgrading and catalytic cracking heavy oil denitrogenation, and molecular sieves are widely used in core technical fields such as molecular transfer, molecular sieve fillers and catalysts.

molecular sieve adsorption principle is a technology worthy of attention in various fields. It can not only improve production efficiency, reduce costs, but also improve product purity and reduce environmental impact. Therefore, more research and development on molecular sieves will become one of the important technologies necessary for various industries in the future.