Cu-ssz-13/sapo-11 composite structure molecular sieve catalyst, preparation method and application thereof
A SAPO-11, cu-ssz-13 technology, applied in Cu-SSZ-13/SAPO-11 composite structure molecular sieve catalyst, preparation and application fields, can solve uninvolved and other problems
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Embodiment 1
[0034] Synthesis of Molecular Sieves with Cu-SSZ-13 / SAPO-11 Composite Structure
[0035] Weigh 4121.21g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O, purity ≥98%wt., 10.98mol] was dissolved in 37366.52mL deionized water, and after stirring evenly, the solution was divided into two parts by mass, 60% and 40%, respectively, and recorded as solution S 1 and solution S 2 , 22101.36g of silica sol [SiO 2 , 40%wt, 147.34mol], 2166.88g of copper acetate [Cu(OAc) 2 ·H 2 O, purity ≥98%wt., 10.83mol] and 2050.12g of tetraethylenepentamine [TEPA, 10.83mol] into S 1 In the solution, after fully stirring, add 2200.22g of sodium hydroxide [NaOH, 55.01mol] into the above solution to adjust the pH value of the solution between 9 and 10, and continue stirring for 5 hours to obtain solution S 1 '; 2012.79g of phosphoric acid [H 3 PO 4 ,85%wt.,17.46mol], 2077.05g of acidic silica sol [SiO 2 , 40wt%, 13.85mol] and 208.03g of triethylamine [DEA, 2.06mol] into S 2 solution, stirred for 1 h to...
Embodiment 2
[0037] Synthesis of Molecular Sieves with Cu-SSZ-13 / SAPO-11 Composite Structure
[0038] Weigh 3.75g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O, purity ≥98%wt., 0.01mol] was dissolved in 111.55mL deionized water, and after stirring evenly, the solution was divided into two parts by mass, 50% and 50%, respectively, and recorded as solution S 1 and solution S 2 , put 1.21g of white carbon black [SiO 2 , 99wt.%, 0.02mol], 4.82g of copper sulfate [CuSO 4 ·5H 2 O, 0.02mol] and 3.61g of ethylenediamine [DEA, 0.06mol] into S 1 In the solution, after fully stirring, add 39.99g of sodium hydroxide [NaOH, 1.0mol] into the above solution to adjust the pH value of the solution between 11 and 12, and continue stirring for 2.5h to obtain solution S 1 '; 10.55g of ammonium dihydrogen phosphate [NH 4 h 2 PO 4 , 0.10mol], 0.61g of white carbon black [SiO 2 ,99wt.%, 0.01mol] and 18.35g of ethylenediamine [EDA,0.30] into S 2 solution, stirred for 0.5h to obtain solution S 2 ’; the solu...
Embodiment 3
[0040] Synthesis of Molecular Sieves with Cu-SSZ-13 / SAPO-11 Composite Structure
[0041] Weigh 2110.55g of aluminum sulfate [Al 2 (SO 4 ) 3 18H 2 O, purity ≥98wt.%, 3.17mol] was dissolved in 16322.09mL deionized water, and after stirring evenly, the solution was divided into two parts by mass, 40% and 60%, respectively, and recorded as solution S 1 and solution S 2 , 997.31g of acidic silica sol [SiO 2 ,40wt.%, 6.65mol], 1024.35g Cu-TETA chelate [made from copper salt and triethylenetetramine, 4.97mol, n(Cu:TETA=1:1)] into S 1 In the solution, 2506.56g of potassium hydroxide [Ca(OH) 2 , 44.68mol] adding the above solution to adjust the pH value of the solution between 10 and 11, and continue to stir for 5h to obtain the solution S 1 '; 166.64g of phosphoric acid [H 3 PO 4 ,85%wt.,1.44mol], 1010.18g of acidic silica sol [SiO 2 , 40wt.%, 6.73mol] and 2211.38g of tetrabutylammonium bromide [TPABr, 8.31mol] into S 2 solution, stirred for 1.5h to obtain solution S 2 ’; ...
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