Catalyst for alkylation reaction and its preparation method and application
A technology of alkylation reaction and catalyst, which is applied in the field of catalyst for alkylation reaction and its preparation, can solve the problems of low selectivity of total products and low toluene conversion rate, limited industrial application, and inability to meet the needs of actual production. Excellent catalytic performance, good industrial application value, and the effect of inhibiting transalkylation
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Embodiment 1
[0032] The catalyst of this embodiment is mainly made of the following raw materials in weight percentage: 70% of alumina, 30% of modified hydrogen EU-1 molecular sieve; the modified hydrogen EU-1 molecular sieve is hydrogen modified by citric acid EU-1 molecular sieve, modified SiO of the aforementioned hydrogen type EU-1 molecular sieve 2 / Al 2 o 3 The molar ratio is 40, and the grain size is 0.8 μm to 1 μm; the preparation process of the modified hydrogen EU-1 molecular sieve is as follows: the hydrogen EU-1 molecular sieve is treated with citric acid solution at 85 °C for 4 hours, and the modified hydrogen EU-1 molecular sieve is obtained. Hydrogen type EU-1 molecular sieve; the mass concentration of the citric acid solution is 1.0%, and the mass ratio of the citric acid solution to the hydrogen type EU-1 molecular sieve is 6:1.
[0033] The specific preparation process of the catalyst in this example is: kneading alumina, modified hydrogen EU-1 molecular sieve and dilut...
Embodiment 2
[0044] The catalyst of this embodiment is mainly made of the following raw materials in weight percentage: 50% of alumina, 50% of modified hydrogen EU-1 molecular sieve; the modified hydrogen EU-1 molecular sieve is hydrogen modified by citric acid EU-1 molecular sieve, modified SiO of the aforementioned hydrogen type EU-1 molecular sieve 2 / Al 2 o 3 The molar ratio is 60, and the grain size is 0.5 μm to 1 μm; the preparation process of the modified hydrogen EU-1 molecular sieve is as follows: the hydrogen EU-1 molecular sieve is treated with citric acid solution at 80 °C for 5 hours, and the modified hydrogen EU-1 molecular sieve is obtained. Hydrogen type EU-1 molecular sieve; the mass concentration of the citric acid solution is 0.8%, and the mass ratio of the citric acid solution to the hydrogen type EU-1 molecular sieve is 8:1.
[0045] The specific preparation process of the catalyst in this example is: kneading alumina, modified hydrogen EU-1 molecular sieve and dilut...
Embodiment 3
[0050] The catalyst of this embodiment is mainly made of the following raw materials in weight percentage: 30% of alumina, 70% of modified hydrogen EU-1 molecular sieve; the modified hydrogen EU-1 molecular sieve is hydrogen modified by citric acid EU-1 molecular sieve, modified SiO of the aforementioned hydrogen type EU-1 molecular sieve 2 / Al 2 o 3 The molar ratio is 80, and the grain size is 0.5 μm to 1 μm; the preparation process of the modified hydrogen EU-1 molecular sieve is as follows: the hydrogen EU-1 molecular sieve is treated with citric acid solution at 90 °C for 3 hours, and the modified hydrogen EU-1 molecular sieve is obtained. Hydrogen type EU-1 molecular sieve; the mass concentration of the citric acid solution is 1.2%, and the mass ratio of the citric acid solution to the hydrogen type EU-1 molecular sieve is 5:1.
[0051] The specific preparation process of the catalyst in this example is: kneading alumina, modified hydrogen EU-1 molecular sieve and dilut...
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Abstract
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