Preparation method of non-supported high-activity hydrogenation catalyst
A hydrogenation catalyst and high-activity technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of low catalytic activity and achieve high specific surface area , Large pore volume, high hydrogenation activity
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[0024] Example 1
[0025] Weigh 19.6g of nickel nitrate, 18.3g of ammonium metatungstate, 9.2g of ammonium molybdate, and 160g of water to prepare a uniformly dispersed acid solution. The molar ratio of nickel to the sum of molybdenum and tungsten in the acid solution is 0.46. Measure its pH =4.5, weigh 200g of silica sol as alkaline solution, measure its pH=11.0, slowly mix the two into the precipitation reactor, carry out co-precipitation reaction at a temperature of 80°C and a pH value of 8.0; after the precipitation reaction is completed, the temperature is 100°C Aging for 4h; suction filter and wash to wash water pH 2 / g, pore volume 0.35cm 3 / g, the average pore diameter is 6.0nm.
Example Embodiment
[0026] Example 2
[0027] Weigh 24.4g of nickel nitrate, 15.9g of ammonium metatungstate, and 160g of water to prepare a uniformly dispersed acid solution. The molar ratio of the group VIII non-noble metal to the group VIB metal in the acid solution is 0.26, and the pH is measured to be 4. 84.7g of sodium metaaluminate and 115g of water were prepared into a uniformly dispersed alkaline solution. The pH was measured to be 12.0. The two were slowly mixed into the precipitation reactor, and the co-precipitation reaction was carried out at a temperature of 90°C and a pH of 9.0; precipitation reaction After the end, age at 90℃ for 4h; filter with suction and wash to wash water pH 2 / g, pore volume 0.31m 3 / g, the average pore diameter is 6.8nm.
Example Embodiment
[0028] Example 3
[0029] Weigh 23.2g of nickel nitrate, 270.9g of ammonium molybdate, and 150g of water to prepare a uniformly dispersed acid solution. The molar ratio of the group VIII non-noble metal to the group VIB metal in the acid solution is 0.26, and the pH is 5.5. Weigh 200g Colloidal silica is used as an alkaline solution, and its pH is measured to be 10.0. The two are slowly mixed into the precipitation reactor, and the co-precipitation reaction is carried out at a temperature of 80°C and a pH value of 7.5; after the precipitation reaction is completed, it is aged at 100°C for 4 hours; Filter and wash to wash water pH 2 / g, pore volume 0.31cm 3 / g, the average pore diameter is 5.5nm.
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