Catalyst suitable for production of cyclohexylbenzene
A cyclohexylbenzene and catalyst technology, applied in molecular sieve catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problem of low cyclohexylbenzene yield, low cyclohexane selectivity, and high cyclohexane yield problem, to achieve the effect of reducing yield and increasing yield
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Embodiment 1
[0044] 1. Catalyst preparation
[0045] Weigh PdCl containing Pd 1.9g 2 Be dissolved in 1mol / L hydrochloric acid aqueous solution and be made into 80g solution I; Measure 0.1L diameter to be 1mm, length 5mm non-binding cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / alumina is 40); The solution I was loaded on the hydrogen-type BEA zeolite molecular sieve, impregnated at room temperature for 12 hours, dried at 100°C for 12 hours, and calcined at 450°C for 4 hours to prepare the desired catalyst.
[0046] 2. Catalyst evaluation
[0047] Get 10ml catalyst packing in the fixed-bed reactor, carry out activity evaluation after reduction activation, condition is as follows: the temperature of reaction is 150 ℃, and the mol ratio of benzene and hydrogen in the reaction raw material is 0.8, and the pressure of reaction is 2.0MPa (gauge pressure) , the liquid volume space velocity of the reacted raw material benzene is 0.5h -1 .
[0048] For ...
Embodiment 2
[0074] 1. Catalyst preparation
[0075] Weigh PdCl containing Pd 0.3g 2 Dissolve in 1mol / L hydrochloric acid aqueous solution and be made into 40g solution I; Weigh Ce(NO 3 ) 3 ·6H 2 O was dissolved in water to make 20g solution II; weighed Cd(NO 3 ) 2 4H 2 O is dissolved in water and is made into 20g solution III; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / aluminum oxide is 40), solution I, Solution II and solution III were mixed and then loaded onto hydrogen-type BEA zeolite molecular sieves, impregnated at room temperature for 12 hours, dried at 100°C for 12 hours, and calcined at 450°C for 4 hours to prepare the desired catalyst.
[0076] 2. Catalyst evaluation
[0077] Catalyst evaluation method see embodiment 1.
[0078] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.
Embodiment 3
[0080] 1. Catalyst preparation
[0081] Weigh PdCl containing Pd 0.3g 2 Dissolve in 1mol / L hydrochloric acid aqueous solution and be made into 40g solution I; Scale the Pr(NO 3 ) 3 ·6H 2 O was dissolved in water to make 20g solution II; weighed Cd(NO 3 ) 2 4H 2 O is dissolved in water and is made into 20g solution III; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / aluminum oxide is 40), solution I, Solution II and solution III were mixed and then loaded onto hydrogen-type BEA zeolite molecular sieves, impregnated at room temperature for 12 hours, dried at 100°C for 12 hours, and calcined at 450°C for 4 hours to prepare the desired catalyst.
[0082] 2. Catalyst evaluation
[0083] Catalyst evaluation method see embodiment 1.
[0084] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.
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