Catalyst for hydrogenolysis and preparation method thereof
A catalyst and oxide technology, used in catalysts, hydrogenation to hydrocarbons, molecular sieve catalysts, etc., can solve the problems of low reaction conversion rate of copper-based catalysts, high reaction conditions, high reaction temperature and pressure, etc., and achieve high conversion rate. and the effect of target product selectivity, high reactivity, high conversion and selectivity
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[0034] Example 1
[0035] The 1# catalyst contains 80.0% copper, 2.0% nickel, 0.01% palladium, 0.5% chromium oxide, 1.5% zinc oxide, and 15.99% alumina in terms of mass percentage.
[0036] A first metal salt solution with a total concentration of 0.5 mol / L and a second metal salt solution with a total concentration of 0.5 mol / L are prepared. The second metal salt solution is a mixed salt solution of chromium nitrate and zinc nitrate.
[0037] Put 1.5L of deionized water into a reaction vessel with a stirring blade. After the temperature is raised to 80°C, add 0.5mol / L sodium carbonate solution and the first metal salt solution dropwise at the same time under stirring. The mass ratio of the salt solution is 2:1. After the dripping is completed, the reaction is continued at 80°C for 2 hours, the pH is adjusted to 7.5-8.0, and the required amount of the second metal salt solution and alumina are added. After fully reacting, it is filtered and washed with water, dried and formed and c...
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[0038] Example 2
[0039] 2# catalyst, in terms of mass percentage, contains 40.0% copper, 8.0% nickel, 0.05% palladium, 1.0% magnesium oxide, 0.5% barium oxide, 0.5% lead oxide, 1.5% chromium oxide, and 48.45% silicon oxide.
[0040] Prepare a first metal salt solution with a total concentration of 0.6 mol / L and a second metal salt solution with a total concentration of 0.6 mol / L. The second metal salt solution is a mixture of magnesium hydrochloride, barium hydrochloride, lead hydrochloride and chromium hydrochloride Salt solution.
[0041] Put in 1.0L deionized water in a reaction vessel with a stirring blade, and after the temperature is raised to 85°C, add 0.5mol / L sodium carbonate solution and the first metal salt solution dropwise while stirring, and the sodium carbonate solution and the first metal The mass ratio of the salt solution is 3:1. After the dripping is completed, continue the reaction at 85°C for 1.5 hours, adjust the pH to 8.5-9.0, and add the required amount of...
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[0042] Example 3
[0043] 3# catalyst, in terms of mass percentage, contains 60.0% copper, 3.0% nickel, 0.01% palladium, 1.5% zinc oxide, 1.0% lead oxide, 1.5% chromium oxide, and 32.99% molecular sieve.
[0044] A first metal salt solution with a total concentration of 0.2 mol / L and a second metal salt solution with a total concentration of 0.2 mol / L are prepared. The second metal salt solution is a mixed salt solution of zinc sulfate, lead sulfate and chromium sulfate.
[0045] Put 1.5L deionized water into a reaction vessel with a stirring blade, and after the temperature is raised to 90°C, add 0.3mol / L sodium carbonate solution and the first metal salt solution dropwise while stirring, and the sodium carbonate solution and the first metal The mass ratio of the salt solution is 2:1. After the dripping is completed, continue the reaction at 90°C for 0.5h, adjust the pH to 7.5-8.0, and add the required amount of the second metal salt solution and molecular sieve. After full reacti...
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