ZSM-5 Spherical Sieve

1. Application in the field of oil refining industry

Diesel hydrogenation decondensation, lubricating oil catalytic dewaxing, gasoline octane recovery, catalytic cracking gasoline olefin reduction, aromatics shape-selective conversion and methanol shape-selective conversion, etc. Famous processes based on ZSM-5 molecular sieves include: Mobil middle distillate dewaxing process (MDDW), lubricating oil dewaxing process (MLDW), M-reforming process, Mobil-Badger synthetic ethylbenzene process, from light hydrocarbons Cyclar process (LPGBTX) for the synthesis of aromatics, xylene isomerization process (MVPI), toluene disproportionation process (MTDP), methanol to gasoline process (MTG), etc.

2. Application in the field of fine chemical industry

Synthesis of 1,4-dioxane from diethylene glycol, synthesis of MTBE (methyl tert-butyl ether) from isobutene and methanol, synthesis of 3,5-lutidine, etc

3. Application in the field of environmental protection

The application of ZSM-5 in the environmental protection industry is mainly reflected in its strong adsorption capacity and good effect on VOCs. It can be applied to the removal of thiophene, phenol, trichlorethylene, NOx into N2, formaldehyde, H2S, etc.

4. Application in chemical anticorrosion

Most of the liquids flowing through chemical equipment and pipelines are corrosive, which can easily corrode pipelines and equipment, greatly reducing their performance and the safety of the production process. ZSM-5 molecular sieve has corrosion resistance to corrosive liquid acids except hydrofluoric acid. The corrosion resistance exhibited by the ZSM-5 molecular sieve coating is attributed to the dense continuous zeolite film with a thickness of several nanometers formed on the metal surface. ZSM-5 zeolite membrane can effectively resist the corrosion of hydrochloric acid, nitric acid, phosphoric acid and sulfuric acid.

5. Application in Electrochemistry

Since all-solid-state lithium polymer batteries (LPBS) have the characteristics of high energy density, good safety, and portability, it may be one of the most used chemical power sources in the future and has a good application prospect.

The addition of ZSM-5 can effectively increase the conductivity of the microporous membrane. The overall performance of the electrolyte prepared by ZSM-5 is much higher than that prepared by Al2O3. The method has a simple process and is particularly suitable for industrialization. ZSM-5 has potential application prospects in the new field of alcohol fuel cells.

1. High product selectivity

ZSM-5 molecular sieve has small crystal grains, short pores, low intra-crystalline diffusion resistance, many exposed atoms, rich inter-crystalline gaps, and strong adsorption capacity, which is especially beneficial to the activation of macromolecules and improves Macromolecular selectivity.

2. High catalytic activity

There are many unsaturated bonds on the outer surface of Dalian Haixin Chemical ZSM-5 molecular sieve, which are easy to adsorb other molecules, so it shows high catalytic performance. For reactions limited by diffusion and cracking reactions of macromolecules whose molecular diameter is larger than that of molecular sieves, the use of our ZSM-5 molecular sieve will have better activity than ordinary ZSM-5 molecular sieves.

3. Long catalyst life

ZSM-5 molecular sieve has strong anti-coking ability and can prolong the service life of the catalyst. The product can quickly diffuse out of the pores of the small-grained molecular sieve, which reduces the reaction depth and slows down the deactivation of carbon deposition.Our Research and Development Center has found through many experiments that the smaller the grain size of ZSM-5 molecular sieve, the better the resistance to carbon deposition. The stronger the capacity, the longer the catalyst life.

4. Higher loading metal component dispersion and loading capacity

The effective loading and dispersion of metal components on molecular sieves significantly affects the performance of supported catalysts. The content of metal components has a certain limit. If the limit value is exceeded, the metal components will cover the molecular sieve surface or block the pores in the form of aggregates, thereby reducing the activity and selectivity of the catalyst. ZSM-5 molecular sieve has a larger external area and more pores, and the metal components are more likely to enter the pores of the molecular sieve, which improves its dispersion and effective content, thereby increasing the catalytic activity and maintaining a longer service life.

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