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Characteristics of Tuokayou molecular sieves
This molecular sieves are synthetic crystal aluminosilicate. It is named as “molecular sieve”, because the pores inside the crystal are of different sizes, so that small molecule can pass through the pores, while larger molecules can not. This molecular sieves consist of AlO4 tetrahedron and SiO4 tetrahedron. In the crystal lattice of the molecular sieve, the metal cations draw the superfluous negative charge in the AlO4 tetrahedron. The substance whose molecule diameter smaller than the pore diameter can enter into the crystal, so that it can be adsorbed, or be repulsed. According to the polarity or polarizability of the different substances, the molecular sieves show a priority of the sorption. Generally, the molecules with strong polarity are easier to be adsorbed.
The molecular sieves have good thermal stability, it can stand the transitory high temperatures of 600°C to 700°C. It can not be dissolved in water, but can be dissolved in strong acid and strong base, therefore, it can used in the medium of Ph value from 5 to 11. Other cations can be exchanged in salt solution.
The unique characteristic of the molecular sieves:
1、the reversible sorption capability to water, gas and liquids
2、 exchange characteristic of cations.
3、 The pores in the molecular sieves has a extroardinary high inner surface area
dessication, selective sorption and catalysis. Compared to other sorbents, molecular sieves have many outstanding characteristic:
1、 extroardinary high sorption capability
2、 selective sorption and separation
3、catalytic charakteristic
4、 ion exchage charakteristic
The loading amount of the molecular sieves can be reduced when sorbents have a higher sorption capability. Meanwhile, the sorption cycle can also be extended. This excellent charakteristic conduces a reduction of not only investment as well as the operation cost and energie waste. The high strength extends the product life. Integrated with the requirements of technology and design, using Bojing molecular sieves can make you rest easy.
With which indexes can the quality and performance of the molecular sieves be determined?
The quality and the performance could be determined with the following indexes.
1. Burning-loss-amount
2. The sorption amount of the water at 25°C, and under variation of relative humidity between 10% and 50%.
3. The sorption amount of all kinds of sorbents, under the saturated pressure of 50%.
4. Measure and analysis of the granularity
5. Dropping powder degree
6. Strength
7. Abrasion rate
8. Packing density
9. Heating test
10. Crystallinity test by X-ray diffraction
11. Isotherm and isobar of the sorption
The two interdependent aspects of the well running of the molecular sieves are its quality and equipment design as well as the operation conditions. The technik which applied by Bojing molecular sieves will provide your molecular sieves a dependence for stable and well running.
Meanwhile, Tuokayou Co., Ltd. provides you with the following service: selection table of the molecular sieves, interpretation for the quality index, evaluation for the application, technologic design for the molecular sieve equipment, instruction for the molecular sieve insatalltion, operation management for the technology process. At last, we can also give you advises and references during the operation process.
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