Hydrophobic ZSM-5 Zeolite Molecular Sieve For Diesel Hydrodewaxing Catalyst
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Post Date:
Oct 31,2025
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Expiry Date:
Dec 30,2025
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Detailed Description:
Cas No. :12173-28-3
Quantity: 500Kilograms
Specs:SiO2/Al2O3,20~1000
Price:3.99 USD Kilograms
Payment Method: L/C,T/T
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%.
ZSM-5 Quality Control Targets
Item
Unit
Max
Typical
Max
Analytical Method
Relative crystallinity
%
90
93
X-ray diffractometer
Total specific surface
m2/g
320
360
N2 Adsorption
Microporous specific surface
m2/g
270
280
N2 Adsorption
Silica-alumina ratio
/
25
27.5
30
XRF
Na2O
wt%
0.040
0.1
Flame Photometric Analysis
SO42-
wt%
0.20
0.4
XRF
CI-
ppm
70
Chemical Analysis
LOI
wt%
10
Gravimetric Analysis
D,50
μm
6
9
Laser Scatter Distribution
D,90
μm
9.0
15
Laser Scatter Distribution
>100μm
%
0
0.06
Laser Scatter Distribution
Na2O Weight %: 0.05
Surface Area, m2/g: 340
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.
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CAS Registry Number:
12173-28-3
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Synonyms:
;Molecular sieve 13X 1/16;Molecular sieve 3A 1/16;Molecular sieve 4A 1/16;Molecular sieve 5A 1/16;Molecular sieves, 5A;Molecular sieves 3A 1/16;MolecularsievesXpowder;MolecularsievesXmmbeads;MolecularsievesmeshpowderLindeX;MolecularsievespelletsLindeX;Molecular Sieve Type 13X;Molecular sieve 3A;MOLECULAR SEIVES, TYPE 4 A;Molecular sieves 13X;
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Molecular Formula:
Al·Ca·16H2O·K·Na·O5Si2·O
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Safety Description:
S22:;
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