Alcohol producing method and catalyst thereof
A catalyst and tablet technology, which can be used in catalyst activation/preparation, physical/chemical process catalysts, organic chemical methods, etc., and can solve problems such as limited mechanical stability
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Embodiment Embodiment 1
[0045] Example Example 1 (Comparative) Catalyst Preparation
[0046] Suspend 72g of alumina powder (with a specific surface area of 146.5m 2 / g) and heated to 70°C. 15kg containing 2628g Cu(NO 3 ) 2 2.5H 2 O and 1200g Zn(NO 3 ) 2 ·6H 2 An aqueous solution of O is pumped from the feeder into the settler. At the same time, a sodium carbonate aqueous solution with a concentration of 1 mol / l was added with a pump. The rate of addition of the sodium carbonate solution was adjusted appropriately to maintain the pH in the range of 6.8-7. Precipitation was performed at a temperature of 70°C. After precipitation, the suspension was stirred for a further 2 hours at 70°C. The suspension was then filtered and the residue was washed with water. The filter cake was dried at 120°C under reduced pressure for 12 hours. The dried material was then calcined at 400°C for 4 hours. The calcined product was ground, mixed with 5% by weight of graphite and flaked with a tablet machin...
Embodiment 2
[0047] The catalyst from Example 1 was calcined at 480° C. for a further 4 hours as finished oxidic tablets. The lateral fracture hardness is 300N. The specific surface area (BET) is 26.4m 2 / g. The reduced lateral fracture hardness is 50N. The sum of the pore volume is 211.2mm 3 / g. The pore size distribution is: the pore size range less than 150 mm accounts for 11.1% of the pore volume sum, while the pore size range greater than 250 mm accounts for 84.9% of the pore volume sum. The exact pore size distribution is shown in Table 1. Example 3 Catalyst preparation
Embodiment 3
[0048] Prepared in a similar manner to Example 1, but the powder was calcined at 480°C for 4 hours before compaction. 5% graphite was then added and the powder was compressed into tablets with a diameter of 5 mm and a height of 3 mm. The lateral fracture hardness is 121N. The specific surface area (BET) is 24.0m 2 / g. The lateral fracture hardness of the reduced state is 47N. The sum of the pore volume is 191.9mm 3 / g. The pore size distribution is: the pore size range less than 150 mm accounts for 12.3% of the pore volume sum, while the pore size range greater than 250 mm accounts for 81.5% of the pore volume sum. The exact pore size distribution is shown in Table 1. Example 4 (Comparative) Catalyst Preparation
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