Synthetic Zeolite ZSM-5 Molecular Sieve Cas No.308081-08-5 for Fluid Bed Catalytic Cracking Reactor

• Post Date:

  Sep 17,2020

• Expiry Date:

  Nov 16,2020

• Detailed Description:

  Cas No. :308081-08-5 Quantity: 500Kilograms
  Specs:Mole Ratio:15-1000,BET:330-380
  Price:3.99 USD Metric Tons
  Payment Method: L/C,T/T
  Synthetic Zeolite ZSM-5 Cas No.308081-08-5 for Fluid Bed Catalytic Cracking
  
  Detailed Product Description
  Product Name: Zeolite ZSM-5 Mole Ratio: 15-1000
  Application: Catalyst Carrier Cl-: Max70ppm
  SIO4: Max0.4 LOI: Max10
  Specifications
  
  
  
  Description:
  
  ZSM-5 zeolite properties
  
  
  
  Mole Ratio: 15-1000
  Nominal Cation Form: Ammonium/Hydrogen
  
  
  
  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
  
  
  
  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.
  
  

• CAS Registry Number:

  308081-08-5

• Company:

  Zibo Jiulong Chemical Co., Ltd.     [ China ]        

• Contact:

  james.li

• Tel:

  0533-6076766 +86-13706436189

• Fax:

  0533-6076766

• Email:

  james.li@jiulongchemical.com