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350m2/g Isomerization Catalyst ZSM 5 CAS 308081 08 5

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350m2/g Isomerization Catalyst ZSM 5 CAS 308081 08 5

350m2/g  Isomerization Catalyst ZSM 5 CAS 308081 08 5
350m2/g  Isomerization Catalyst ZSM 5 CAS 308081 08 5 350m2/g  Isomerization Catalyst ZSM 5 CAS 308081 08 5 350m2/g  Isomerization Catalyst ZSM 5 CAS 308081 08 5

Large Image :  350m2/g Isomerization Catalyst ZSM 5 CAS 308081 08 5

Product Details:
Place of Origin: china
Brand Name: QD
Certification: ISO9001:2015
Model Number: SiO2/Al2O3=10-1000
Payment & Shipping Terms:
Minimum Order Quantity: 1 kg
Price: USD3000-10000 Ton
Packaging Details: 25kg/bags or 500kg/bags and carbon
Delivery Time: 5-8days
Supply Ability: 1000Ton per month

350m2/g Isomerization Catalyst ZSM 5 CAS 308081 08 5

Color: White Mole Ratio: 15-1000
Nominal Cation Form: Ammonium/Hydrogen BET: 350-500m2/g
Other Names: ZSM-5 Zeolite Hzsm-5 Zsm-5 Molecular Sieve CAS: 308081-08-5
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350m2/g isomerization catalyst


350m2/g Catalyst ZSM 5


350m2/g zeolite based catalyst

Isomerization catalyst ZSM-5


Acid resistance

ZSM-5 zeolite has good acid resistance, it is resistant to various acids except hydrofluoric acid.


Mole Ratio: 15-1000
Nominal Cation Form: Ammonium/Hydrogen



SiO2/Al2O3Mole Ratio Nominal Cation Form Na2O Weight % Surface Area, m2/g
QD 01 25 Sodium/Hydrogen 0.05 450
QD O2 30 Sodium/Hydrogen 0.05 450
QD 03 50 Sodium/Hydrogen 0.05 450
QD 04 80 Sodium/Hydrogen 0.05 450
QD 05 280 Sodium/Hydrogen 0.05 450










Na2O Weight %: 0.05
Surface Area, m2/g: 450




ZSM-5 zeolite properties


Thermal stability

High thermal stability of ZSM-5 zeolite. This is caused by a skeleton in a stable five-membered ring structure and a high silica to alumina ratio. For example, the sample calcined at 850 ℃ After 2 hours, the crystal structure unchanged. Even can withstand high temperature of 1100 ℃. So far, ZSM-5 zeolites are known to one of the highest qualitative hot temperature. Therefore, it is used in high-temperature process is particularly suitable. For example, use it as a hydrocarbon cracking catalyst, regeneration of the catalyst can withstand passage of time.


Steam stability

The studies have shown that when other zeolites by steam and hot water, and their general structure is destroyed, leading to irreversible deactivation. The Mobil company with ZSM-5 as the conversion of methanol (water is one of the major product) catalyst. This suggests that ZSM-5 to water vapor with good stability. 540 ℃ lower partial pressure of 22mmHg steaming column and HY zeolite HZSM-5 after 24 hours, a crystallinity of HZSM-5 and about 70 percent of fresh catalyst, but under the same conditions, HY zeolite skeleton almost completely damage.



ZSM-5 having a high silica to alumina ratio, the smaller the surface charge density. The water molecule is polar, so you will not ZSM-5 is adsorbed. Although water molecules smaller than the diameter of n-hexane, but the amount of adsorption of n-hexane ZSM-5 is generally greater than water.


Easy to coke

ZSM-5 V-shaped aperture effective, pore size and bending, preventing a large condensate formation and accumulation. Meanwhile, ZSM-5 framework is no greater than the bore of the cavity (cage) exist, so limiting the formation of large molecules from the secondary condensation reactions. So that the possibility of ZSM-5 catalyst coke is reduced. ZSM-5 for an alkyl aromatics into the tunnel barrier is formed, and thus the reaction process it can not continue to react in smaller pores, the final condensation formed coke. ZSM-5 so much slower than the rate of coke deposition and Y-type mordenite, difference of almost two orders of magnitude. Capacity of ZSM-5 zeolite carbon content is higher.


Excellent shape-selective selectivity

Zeolite molecular sieve as catalyst, only smaller than the hole crystal molecules can catalyze the reaction out of control pore size crystalline zeolite suffering zeolite catalyst size and shape of reactant and product molecules showed great selectivity. Pore ​​system of ZSM-5 zeolite having a 10-MR constituted medium size orifice diameter, it has a good shape-selective selectivity.



ZSM-5 has a high silicon to aluminum ratio. Whenever an Al3+ cation replaces a Si4+ cation, an additional positive charge is required to keep the material charge-neutral. With proton (H+) as the cation, the material becomes very acidic. Thus the acidity is proportional to the Al content. The very regular 3-D structure and the acidity of ZSM-5 can be utilized for acid-catalyzed reactions such as hydrocarbon isomerization and the alkylation of hydrocarbons. One such reaction is the isomerization of meta-xylene to para-xylene. Within the pores of the ZSM-5 zeolite, para-xylene has a much higher diffusion coefficient than meta-xylene. When the isomerization reaction is allowed to occur within the pores of ZSM-5, para-xylene is able to traverse along the pores of the zeolite, diffusing out of the catalyst very quickly. This size-selectivity allows the isomerization reaction to occur quickly in high yield.

ZSM-5 has been used as a support material for catalysis. In one such example, copper is deposited on the zeolite and a stream of ethanol is passed through at temperatures of 240 to 320 °C as a vapour stream, which causes the ethanol to oxidize to acetaldehyde; two hydrogens are lost by the ethanol as hydrogen gas. It appears that the specific pore size of ZSM-5 is of benefit to this process, which also functions for other alcohols and oxidations. The copper is occasionally combined with other metals, such as chromium, to fine tune the diversity and specificity of the products, as there is likely to be more than one. Acetic acid is an example of one possible byproduct from hot copper oxidation. It is used to convert alcohols directly into gasoline.

350m2/g  Isomerization Catalyst ZSM 5 CAS 308081 08 5 0

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