Hierarchically porous hydrocracking catalyst and application thereof
A hydrocracking and catalyst technology, which is applied in physical/chemical process catalysts, molecular sieve catalysts, hydrocarbon oil cracking, etc., can solve the problems of reducing the active hydroxyl groups on the surface of alumina precursors, changing the interaction of metal supports, and reducing the reactivity of catalysts, etc.
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Embodiment 1
[0054] 298 grams of pseudo-boehmite SB (dry basis 0.75, dry basis measurement method is to put a certain amount of raw powder into a crucible with a lid into the muffle furnace, heat up to 700 ℃ constant temperature for 1 hour, calculate the remainder of the same original The ratio of powder, the same below) and 366.7 grams of ultra-stable molecular sieve LAY (produced by Changling Catalyst Plant of Sinopec Catalyst Branch, unit cell constant 24.58, pore volume 0.39ml / g, dry basis 0.75), sesame powder 16g, 12ml purity Mix 65% concentrated nitric acid and 400ml deionized water evenly, extrude it into a trilobal strip with a circumscribed circle diameter of 1.6 mm, dry at 120°C for 3 hours, and roast at 600°C for 3 hours to obtain a carrier. The composition of the catalyst carrier is shown in Table 2.
[0055] After cooling to room temperature, take 100 grams of carrier containing ammonium metatungstate (Sichuan Zigong Cemented Carbide Factory, the content of tungsten oxide is 82% ...
Embodiment 2
[0057] Mix 298 grams of pseudo-boehmite PB1-2 (0.74 on a dry basis) with 366.7 grams of ultra-stable molecular sieve LAY, 16 grams of sesame powder, 12 ml of 65% concentrated nitric acid, and 482 ml of deionized water, and squeeze them into a circumscribed circle. A trilobal strip with a diameter of 1.6 mm was dried at 120°C for 3 hours and calcined at 600°C for 3 hours to obtain a carrier. The composition of the catalyst carrier is shown in Table 2.
[0058] After cooling to room temperature, take 100 grams of carrier containing ammonium metatungstate (Sichuan Zigong Cemented Carbide Factory, the content of tungsten oxide is 82% by weight), 50 grams of basic nickel carbonate (Jiangsu Yixing Xuchi Chemical Co., Ltd., nickel oxide content) (51% by weight) 8.7g, 10.5g of citric acid 78ml aqueous solution were immersed and baked at 180°C for 10 hours to obtain catalyst C-2. Based on the total amount of catalyst, the mass fractions of metal components in C-2 (calculated values, the s...
Embodiment 3
[0060] Mix 296 grams of pseudo-boehmite PB1-3 (0.76 on a dry basis) with 366.7 grams of ultra-stable molecular sieve LAY, 16 grams of sesame powder, 3.5 ml of 65% concentrated nitric acid, and 700 ml of deionized water. A trilobal strip with a circle diameter of 1.6 mm was dried at 120°C for 3 hours and calcined at 600°C for 3 hours to obtain a carrier. The composition of the catalyst carrier is shown in Table 2.
[0061] After cooling to room temperature, take 100 grams of carrier containing ammonium metatungstate (Sichuan Zigong Cemented Carbide Factory, the content of tungsten oxide is 82% by weight), 50 grams of basic nickel carbonate (Jiangsu Yixing Xuchi Chemical Co., Ltd., nickel oxide content) (51% by weight) 8.7g, 10.5g of citric acid 110ml aqueous solution immersion, 180°C for 10 hours, to obtain catalyst C-2. Based on the total amount of catalyst, the mass fractions of metal components in C-2 (calculated values, the same below) are listed in Table 2.
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