A kind of highly selective oil hydrodecarboxylation catalyst and preparation method thereof
A technology of oil hydrogenation and high selectivity, which is applied in fatty acid hydrogenation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of high price and achieve the effects of high decarboxylation rate, easy operation and high diesel yield.
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Embodiment 1
[0044] Take 50g of industrial hydrated titanium oxide, 30g of SB powder, and 40g of ZSM-5 molecular sieve modified by zinc nitrate. Deionized water, kneaded and extruded into strips of Ф1.6mm, dried at 110°C for 4 hours, and then calcined at 550°C for 4 hours to make carrier a, whose physical and chemical properties are shown in Table 1.
[0045] Add ammonium molybdate, cobalt nitrate in deionized water, contain 25g ammonium molybdate, 18g cobalt nitrate in the prepared 100ml active component liquid;
[0046] Immerse 50g of carrier a in 100ml of the above solution, soak at 40°C for 2h, filter, dry at 110°C for 4h, and then roast at 500°C for 4h to prepare Catalyst A, whose physical and chemical properties are shown in Table 2.
[0047] In addition, the first carrier component, the second carrier component, and the active component account for 52%, 37.1%, and 10.9% of the weight of the catalyst A, respectively, based on the dry weight of the oxide.
Embodiment 2
[0049] Take 100g of industrial hydrated titanium oxide, 60g of SB powder, and 50g of ZSM-5 molecular sieve modified by zinc nitrate. Deionized water, kneaded and extruded into strips of Ф1.6mm, dried at 110°C for 4 hours, and then calcined at 550°C for 4 hours to make carrier b, whose physical and chemical properties are shown in Table 1.
[0050] Add ammonium molybdate and nickel nitrate in deionized water, and the prepared 100ml active component liquid contains 50g ammonium molybdate and 36.6g nickel nitrate;
[0051] 100 g of carrier b was subjected to saturated spray impregnation, left at room temperature for 10 h, dried at 110 °C for 4 h, and then calcined at 500 °C for 4 h to prepare catalyst B, whose physical and chemical properties are shown in Table 2.
[0052] In addition, the first carrier component, the second carrier component, and the active component account for 55.5%, 24.9%, and 19.6% of the weight of the catalyst B, based on the dry weight of the oxide.
Embodiment 3
[0054] SB powder 95g, SiO 2 3g, 5g of magnesium nitrate, 30g of SAPO-11 molecular sieve modified by zirconium nitrate, after mixing evenly, add squash powder, polyacrylamide, methylcellulose, citric acid, nitric acid and appropriate amount of deionized water, knead and squeeze into clover shape, dried at 80°C for 8 hours, and then calcined at 400°C for 10 hours to make carrier c, whose physical and chemical properties are shown in Table 1.
[0055] Add ammonium molybdate, cobalt nitrate, and ammonium metatungstate to deionized water, and the prepared 100ml active component liquid contains 10g ammonium molybdate, 15g cobalt nitrate, and 28g ammonium metatungstate;
[0056] Immerse 50g of carrier C in 100ml of the above solution, soak at 20°C for 10h, filter, dry at 80°C for 8h, and then roast at 350°C for 10h to prepare Catalyst C, whose physical and chemical properties are shown in Table 2.
[0057] In addition, the first carrier component, the second carrier component, and ...
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