Preparation method of catalyst carrier for hydrotreating pretreatment of wax oil
A catalyst carrier and wax oil hydrogenation technology, which is applied in the direction of catalyst carrier, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problem that molecular sieve cannot effectively match the acid center, and achieve the effect of facilitating dispersion and increasing acidity
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Embodiment -1
[0022] HY / AlPO 4 Synthesis of -5 composite molecular sieve: Mix 109.0 g of phosphoric acid (AR, mass concentration 85%) and 306.0 g of deionized water in a 35 °C water bath, add 60.0 g of pseudoboehmite (Shandong aluminum powder, aluminum oxide Content 67.0wt%), constant temperature and uniform stirring for 0.5 h to obtain aluminum phosphate sol; add 4.0 g poly N,N-ditetraethylammonium hydrochloride (referred to as PCD, Henan Daochun Co., Ltd., purity 95%), and slowly stir After 0.5 h, add 64.0 g of triethylamine (abbreviated as TEA, with a purity of 99%), and continue to stir for 0.5 h until a uniform sol is formed. The molar ratio of the materials in this reaction system is Al 2 o 3 :P 2 o 5 :TEA:H 2 O=1:1.05:1.2:50. The sol was put into a polytetrafluoroethylene autoclave and aged at 100 °C (heating rate 1 °C / min) for 4 h to obtain AlPO 4 -5 molecular sieve seed crystals, and then add 45.0 g HY molecular sieves (Shanghai Xinnian Auxiliary Co., Ltd., with a silicon-alu...
Embodiment -2
[0024] Synthesis of USY / SAPO-5 composite molecular sieve: Mix 109.0 g of phosphoric acid and 306.0 g of deionized water in a 35 °C water bath, add 60.0 g of pseudoboehmite, and stir at a constant temperature for 0.5 h to obtain aluminum phosphate sol; add 4.0 g PCD, after stirring slowly for 0.5 h, add 16.0 g tetraethyl orthosilicate (referred to as TEOS, purity 99%), then slowly stir for 0.5 h, add 64.0 g TEA, continue stirring for 0.5 h until a uniform sol is formed, the reaction system The material molar ratio in Al 2 o 3 :P 2 o 5 : SiO 2 :TEA:H 2 O=1:1.05:0.2:1.2:50. The sol was put into a polytetrafluoroethylene high-pressure reactor, aged at 90 °C (heating rate 1 °C / min) for 8 h, and SAPO-5 molecular sieve seeds were obtained, and then 40.0 g of USY (Shanghai Xinnian Auxiliary Co., Ltd. company, with a silicon-aluminum ratio of 12) molecular sieves, after crystallization at 185 °C for 24 h. The crystallized product was separated, the obtained solid product was was...
Embodiment -3
[0026] Beta / AlPO 4 Synthesis of -5 composite molecular sieve: Mix 114.0 g phosphoric acid and 306.0 g deionized water in a 35 °C water bath, add 60.0 g pseudo-boehmite, and stir at a constant temperature for 0.5 h to obtain aluminum phosphate sol; add 4.0 g PCD, After stirring slowly for 0.5 h, add 64.0 g TEA and continue stirring for 0.5 h until a uniform sol is formed. The molar ratio of the materials in this reaction system is Al 2 o 3 :P 2 o 5 :TEA:H 2 O=1:1.1:1.2:50. The sol was put into a polytetrafluoroethylene autoclave and aged at 100 °C (heating rate 1 °C / min) for 4 h to obtain AlPO 4 -5 molecular sieve seed crystals, and then add 45.0 g Beta molecular sieves (Shanghai Xinnian Auxiliary Co., Ltd., with a silicon-aluminum ratio of 24), and crystallize at 175 °C for 36 h. The crystallized product was separated, the obtained solid product was washed with deionized water to pH=7~8, and dried at 120 °C for 8 h to obtain Beta / AlPO 4 -5 composite molecular sieve raw ...
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