A kind of alkane isomerization catalyst and preparation method thereof
An alkane isomerization and catalyst technology, which is applied in the preparation field of the above-mentioned catalyst, can solve the problems of no acidity, no exchangeable charge, limited application of catalytic reaction, etc., and achieves the effect of low reaction temperature and high activity
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Embodiment 1
[0068] Weigh 70g of pseudo-boehmite, dissolve in 200g of deionized water, stir and mix evenly; weigh 130g of phosphoric acid, dissolve in 100g of deionized water, mix evenly; add the phosphoric acid solution dropwise to the pseudo-boehmite in a stirring state The solution forms a precursor mixture A; A is aged at 10°C for 4 hours; weigh 57g of diisopropylamine, add it dropwise to A, and stir evenly; then weigh about 45g of silica sol (30wt%), and add it dropwise to A , and stir evenly to form precursor mixture B; put B into a reaction kettle with a volume of 1L, and start crystallization at a temperature of 200°C for 24 hours; after the crystallization is completed, wash and filter the product until the filtrate is Neutral, the filtered product was dried in an oven at 120°C for 24 hours to obtain a silicon-aluminum phosphate composite molecular sieve SC1. Its X-ray diffraction spectrum is attached as image 3 , the acidic characterization results are attached Figure 4 The X...
Embodiment 2
[0070] Weigh 70g of pseudo-boehmite, dissolve in 200g of deionized water, stir and mix evenly; weigh 130g of phosphoric acid, dissolve in 100g of deionized water, mix evenly; add the phosphoric acid solution dropwise to the pseudo-boehmite in a stirring state The solution forms a precursor mixture A; A is aged at 0°C for 2 hours; weigh 57g of di-n-propylamine, add it dropwise to A, and stir evenly; then weigh about 45g of silica sol (30wt%), and add it dropwise to A , and stir evenly to form precursor mixture B; put B into a reaction kettle with a volume of 1L, and start crystallization at a temperature of 200°C for 24 hours; after the crystallization is completed, wash and filter the product until the filtrate is Neutral, the filtered product was dried in an oven at 120°C for 20 hours to obtain a silicon-aluminum phosphate composite molecular sieve SC1. The X-ray diffraction peak positions are summarized in Table 2.
Embodiment 3
[0072] Weigh 70g of pseudo-boehmite, dissolve in 200g of deionized water, stir and mix evenly; weigh 130g of phosphoric acid, dissolve in 100g of deionized water, mix evenly; add the phosphoric acid solution dropwise to the pseudo-boehmite in a stirring state The solution forms a precursor mixture A; A is aged at 0°C for 8 hours; weigh 57g of di-n-propylamine, add it dropwise to A, and stir evenly; then weigh about 23g of silica sol (30wt%), and add it dropwise to A , and stir evenly to form precursor mixture B; put B into a reaction kettle with a volume of 1L, and start crystallization at a temperature of 200°C for 24 hours; after the crystallization is completed, wash and filter the product until the filtrate is Neutral, the filtered product was dried in an oven at 120°C for 18 hours to obtain a silicon-aluminum phosphate composite molecular sieve SC1. The X-ray diffraction peak positions are summarized in Table 2.
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