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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[0047] [Example 1]
[0048] 1. Catalyst preparation
[0049] A cylindrical alumina carrier with a length of 5mm and a diameter of 2mm (specific surface is 125 meters) 2 / G, pore volume of 0.46ml / g) 1L, mixed with 500ml of potassium carbonate aqueous solution containing 0.30g of K, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then combined with palladium chloride containing 2.7g of Pd with hydrochloric acid Mix 500 ml of the aqueous solution adjusted to pH=3, dry at 80°C for 4 hours, and calcinate at 450°C for 4 hours to obtain the desired catalyst (Pd content: 2.7 g / L, K content: 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 0.4MPa, and then proceed to react. The reaction conditions are as follows: the reaction temperature is 45°C, the reaction pressure is 0.3MPa, the molar ratio of hydrogen to AMS in the reaction raw materials is 1.2, and the l...
Example Embodiment
[0053] [Example 2]
[0054] 1. Catalyst preparation
[0055] A cylindrical alumina carrier with a length of 5mm and a diameter of 2mm (specific surface is 125 meters) 2 / G, pore volume 0.46ml / g) 1L, mixed with 500ml of ammonium molybdate aqueous solution containing 0.30g of 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 Mix 500 ml of an aqueous solution adjusted to pH=3 with hydrochloric acid, dry at 80°C for 4 hours, and calcinate at 450°C for 4 hours to obtain the desired catalyst (Pd content: 2.7 g / l, Mo content: 0.30 g / l).
[0056] 2. Catalyst evaluation
[0057] See Example 1 for the catalyst evaluation method.
[0058] For the convenience of comparison, the composition and evaluation results of the catalyst are listed in Table 1.
Example Embodiment
[0059] [Example 3]
[0060] 1. Catalyst preparation
[0061] A cylindrical alumina carrier with a length of 5mm and a diameter of 2mm (specific surface is 125 meters) 2 / G, pore volume 0.46ml / g) 1L, mixed with potassium carbonate containing 0.24g K and 500ml ammonium molybdate aqueous solution containing 0.06g Mo, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then mixed with 2.7 g of Pd palladium chloride and 500 ml of an aqueous solution adjusted to pH=3 with hydrochloric acid were mixed, dried at 80°C for 4 hours, and calcined at 450°C for 4 hours to obtain the required catalyst (Pd content of 2.7 g / L, K content of 0.24 G / L, the Mo content is 0.06 g / L).
[0062] 2. Catalyst evaluation
[0063] See Example 1 for the catalyst evaluation method.
[0064] For the convenience of comparison, the composition and evaluation results of the catalyst are listed in Table 1.
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