China (Mainland)
High stability ZSM-5 zeolite steam as catalyst carrier for MTP catalyst CAS NO.12173-28-3
- FOB Price: USD: 4.12-4.18 /Kilogram Get Latest Price
- Min.Order: 500 Kilogram
- Payment Terms: L/C,T/T
- Available Specifications:
industry grade(1000-10000)Kilogramindustry grade(11000-30000)Kilogram
- Product Details
Keywords
- ZSM-5 Zeolite
- Silica-alumina ratio:15~1000
- ZSM-5 Zeolite catalyst carrier
Quick Details
- ProName: High stability ZSM-5 zeolite steam as ...
- CasNo: 12173-28-3
- Molecular Formula: AlKO6Si2
- Appearance: White Powder
- Application: ZSM-5 type zeolite is widely applied t...
- DeliveryTime: Negotation
- PackAge: 25kg/woven bag, 500kg/palle by the cus...
- Port: QINGDAO
- ProductionCapacity: 100 Metric Ton/Day
- Purity: 93%
- Storage: Place at room temperature
- Transportation: FOB/CFR/CIF
- LimitNum: 500 Kilogram
- Grade: Industrial Grade
- Appearence: White Powder
- Silica-alumina ratio: 15~1000
- Total specific surface: 360
- Microporous specific surface: 280
- Relative crystallinity: 93
- Na2O: 0.1
- SO42-: 0.20
- D,50: 6μm
- D,90: 9.0μm
Superiority
High stability ZSM-5 zeolite steam as catalyst carrier for MTP catalyst
|
ZSM-5 type zeolite,belonging to high-silica zeolite and having a Si/Al ratio of up to 1000 and above,also shows the hydrophobic characteristic.The structural feature of such a zeolite is that the vertical and horizontal parts are crystalline aluminosilicate composed of 10-membered channel.The basic structure is composed of eight 5-membered rings,which has channels only and is without cage-free cavities.ZSM-5 has two sets of cross channels,one of which is straight,and the other one is shown in zig-zag type and vertical to each other.The channel is shown in the form of an ellipse,and the window diameter thereof is 0.55 to 0.60nm.As the reaction space is similar to the shape of the access,the zeolite has a shape selection effect to the reactants and products.Moreover,ZSM-5 is a good raw material of selective catalyst due to the harmonious structure and hydrothermal stability.
The varieties for the typical products of ZSM-5 Zeolite produced by JiuLong Chemical Co.,Ltd.are listed as follows,and the other products of this series also can be produced according to the requirements of the user: |
Details
High Thermal Stability ZSM-5 Zeolite Molecular Sieve for Catalyst Carrier
The ZSM-5 type zeolite produced by means of a template agent free hydrothermal crystallization method is featured with high relative crystallinity,wherein the relative crystallinity is no less than 90%,the SiO2/Al2O3 molar ration is no less than 25,and the Na2O is no more than 0.1%.
Specifications
Mole Ratio: 15-1000
Nominal Cation Form: Ammonium/Hydrogen
|
JIULONG Products |
SiO2/Al2O3Mole Ratio | Nominal Cation Form | Na2O Weight % | Surface Area, m2/g |
| JL 01 | 25 | Sodium/Hydrogen | 0.05 | 340 |
| JL O2 | 30 | Sodium/Hydrogen | 0.05 | 340 |
| JL 03 | 50 | Sodium/Hydrogen | 0.05 | 340 |
| JL 04 | 80 | Sodium/Hydrogen | 0.05 | 340 |
| JL 05 | 280 | Sodium/Hydrogen | 0.05 | 340 |
Na2O Weight %: 0.05
Surface Area, m2/g: 340
High Steam Stability ZSM-5 Zeolite As Catalyst Carrier For MTP Catalyst
Description:
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.
Acid resistance
ZSM-5 zeolite has good acid resistance, it is resistant to various acids except hydrofluoric acid.
Steam stability
Wang, IKai other 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.
Hydrophobic
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.