Cumene catalyst and preparation method thereof
A propylbenzene catalyst, a catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, hydrogenation to hydrocarbons, etc., can solve problems such as low cumene selectivity, and achieve high activity, selectivity, and good effect. Effect
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Embodiment 1
[0048] 1. Catalyst preparation
[0049] Will length be 5mm, diameter be 2mm cylindrical alumina carrier (specific surface is 125 meters 2 / g, the pore volume is 0.46 ml / g) 1L, mixed with 500 ml of potassium carbonate aqueous solution containing 0.30 g of K, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then mixed with palladium chloride containing 2.7 g of Pd and treated with hydrochloric acid Mix 500 ml of aqueous solution adjusted to pH=3, dry at 80°C for 4 hours, and calcined at 450°C for 4 hours to obtain the desired catalyst (Pd content is 2.7 g / L, K content is 0.30 g / L).
[0050] 2. Catalyst evaluation
[0051] Take 40ml of catalyst and fill it in a fixed-bed reactor, activate it at 50° C. for 4 hours in a hydrogen atmosphere of 0.4 MPa, and then carry out the reaction. Reaction conditions are as follows: reaction temperature is 45 ℃, reaction pressure is 0.3MPa, the mol ratio of hydrogen and AMS in the raw material of reaction is 1.2, and the liquid spa...
Embodiment 2
[0054] 1. Catalyst preparation
[0055] Will length be 5mm, diameter be 2mm cylindrical alumina carrier (specific surface is 125 meters 2 / g, pore volume is 0.46ml / g) 1L, mixed with 500ml of ammonium molybdate aqueous solution containing 0.30g Mo, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then used together with palladium chloride containing 2.7g of Pd Hydrochloric acid adjusted to 500 ml of aqueous solution with pH=3, mixed, dried at 80°C for 4 hours, and calcined at 450°C for 4 hours to obtain the desired catalyst (with a Pd content of 2.7 g / L and a Mo content of 0.30 g / L).
[0056] 2. Catalyst evaluation
[0057] Catalyst evaluation method see embodiment 1.
[0058] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.
Embodiment 3
[0060] 1. Catalyst preparation
[0061] Will length be 5mm, diameter be 2mm cylindrical alumina carrier (specific surface is 125 meters 2 / g, the pore volume is 0.46 ml / g) 1L, mixed with 500 ml of ammonium molybdate aqueous solution containing 0.24 g of potassium carbonate and 0.06 g of Mo, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then mixed with Palladium chloride of 2.7 grams of Pd was adjusted to 500 milliliters of aqueous solution of pH=3 with hydrochloric acid and mixed, dried at 80 DEG C for 4 hours, and roasted at 450 DEG C for 4 hours to obtain the required catalyst (the content of Pd was 2.7 grams per liter, and the content of K was 0.24 g / L, the Mo content is 0.06 g / L).
[0062] 2. Catalyst evaluation
[0063] Catalyst evaluation method see embodiment 1.
[0064] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.
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