A kind of Geapso-34 molecular sieve and its preparation and application method
A technology of SAPO-34 and geapso-34, applied in the direction of molecular sieves and alkali-exchanged phosphates, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of lack of molecular sieve preparation and application technology development, and achieve the effect of simple preparation methods
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] By mole ratio P 2 O 5 : Al 2 O 3 : SiO 2 : GeO 2 :R:H 2 O=1:1:0.1:0.1:3:50 Weigh each material, wherein the organic amine template agent R is a mixture of triethylamine and diethylamine (the molar ratio of the two is 2.5:0.5), deionized water, Pseudo-boehmite, phosphoric acid, silica sol, germanium dioxide, templating agent R and SAPO-34 molecular sieve seeds accounting for 4% of the total weight of the gel mixture were mixed, stirred for 2 hours, and then transferred to a microwave synthesis kettle after uniformity. The kettle was first crystallized at 150 °C for 1 hour, and then raised to 190 °C for 1 hour. After the crystallization is completed, after the material is cooled to room temperature, the crystallization product and the mother liquor are centrifuged, the solid product is washed to neutrality with deionized water, and finally dried at 120 ° C for 12 hours to obtain the original GeAPSO-34 molecular sieve powder, X The results of ray diffraction are fi...
Embodiment 2
[0030] By mole ratio P 2 O 5 : Al 2 O 3 : SiO 2 : GeO 2 :R:H 2 O=1: 1: 0.09: 0.11: 1.9: 50 Weigh each material, wherein the organic amine template agent R is a mixture of tetraethylammonium hydroxide, triethylamine and diethylamine (the molar ratio of the three is 0.7:0.5: 0.7), mix deionized water, pseudo-boehmite, phosphoric acid, silica sol, germanium dioxide, template R and SAPO-34 molecular sieve seed crystals that account for 2% of the total weight of the gel mixture, stir for 1 hour, and after uniformity Transfer to a microwave synthesis kettle, seal the kettle, and first crystallize at 150 °C for 1 hour, and then raise the temperature to 180 °C for 2 hours. After the crystallization, the product was cooled, centrifuged, washed to neutrality, and dried at 100°C for 10 hours to obtain the original GeAPSO-34 molecular sieve powder. The X-ray diffraction results were as follows: figure 1 (b), indicating that it has a CHA topology, and the electron microscope results...
Embodiment 3
[0033] Same as Example 1, except that the raw material silica sol dosage ratio is changed to 0.08, and the germanium dioxide is changed to 0.12, that is, the molar ratio P 2 O 5 : Al 2 O 3 : SiO 2 : GeO 2 :R:H 2 O=1: 1: 0.08: 0.12: 3: 50 Weigh each material. X-ray diffraction results show that the synthesized GeAPSO-34 molecular sieve has a CHA topology, and the fixed bed activity evaluation results are shown in Table 1.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More