Detailed Product Description
Synthesis of ZSM-5 by direct method
NKF-5 zeolite is synthesized directly by reacting soluble glass with aluminium sulphate to ZSM-5 zeolite, not using organic amine. This product has been used as the parent of alkylationm, isomeration, aromatization and dewaxing catalysts and so on. The NKF-5 zeolite, characteristic of the simpler synthesis process, stabler quality, free of pollution, less cost, better hydrothermally, compared to those of ZSM-5 zeolite synthesized suing organic compounds overseas, won the second place of the State Invention Prize of P.R.C..
Chemical Composition:
| (SiO2/AI2O3)=38 | (SiO2/AI2O3)=50 | (SiO2/AI2O3)=25 |
Na2O | 2.8-2.9 | 2.1-2.3 | 4-4.5 |
AI2O3 | 3.8-3.9 | 2.3-2.5 | 5-5.5 |
SiO2 | 85-86 | 86.0-87.0 | 80-85 |
Adsorption:
Adsorbent | N-hexane | Cyclohexane | Water |
(SiO2/AI2O3)=38 | 9.5-10.5 | 1.9-2.3 | 9.0-10.0 |
(SiO2/AI2O3)=50 | 9.0-10.0 | 1.5-2.0 | 7.0-8.0 |
(SiO2/AI2O3)=25 | 9.5-10.5 | 2.05-2.5 | 11.0-12.0 |
Structure State:
Crystallinity Na>=85% H>=95%
Pore size 5Å
Framework Density 1.81 (determined in isooctane)
Thermal stability:The differential thermal analyst(DTA) curve shows that the crystal exhibits no major structural change up to temperature of about 1200.
Hydro-thermal stability:The binder-additive catalyst could retain its crystallinity when treated under 100% steam at a temperature of 700 for 12h.