A kind of catalyst for catalytic conversion of impurities in octafluorocyclobutane, preparation method and application thereof
A technology for catalytic conversion of octafluorocyclobutane, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., which can solve the problem of poor catalyst effect and difficult conversion and other problems, to achieve the effect of improving activity, simplifying process and high separation efficiency
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Embodiment 1
[0029] The catalyst is prepared by the following steps:
[0030] (1) Activated carbon pretreatment: Mix activated carbon with 5wt% aqueous nitric acid solution at a mass ratio of 1:3, stir evenly, treat at 60°C for 4h, wash with deionized water until neutral, and dry at 120°C for 5h to obtain Pretreated activated carbon.
[0031] (2) Preparation of catalyst precursor: adding cobalt nitrate and yttrium nitrate into distilled water, stirring and heating to 80° C., after being completely dissolved and cooled, a solution containing auxiliary components is obtained, which is set aside for use; palladium chloride is dissolved to the mass In dilute hydrochloric acid with a fraction of 2%, a solution containing active components is obtained. After mixing the solution containing active components and the solution containing auxiliary components, the pH value of the solution is adjusted to 6 with sodium carbonate to obtain a mixed solution. The pretreated activated carbon was added to ...
Embodiment 2
[0036] The catalyst is prepared by the following steps:
[0037] (1) Activated carbon pretreatment: Mix activated carbon with 2wt% nitric acid aqueous solution in a mass ratio of 1:5, stir evenly, treat at 90 °C for 2 hours, wash with deionized water until neutral, and dry at 100 °C for 4 hours to obtain Pretreated activated carbon.
[0038] (2) Preparation of catalyst precursor: adding silver nitrate and cerium nitrate into distilled water, stirring and heating to 90° C., after being completely dissolved and cooled, a solution containing auxiliary components is obtained, which is set aside for use; the active component palladium chloride Dissolved in dilute hydrochloric acid with a mass fraction of 4% to obtain a solution containing active components, after mixing the solution containing active components and the solution containing auxiliary components, the pH value of the solution was adjusted to 5 with sodium carbonate to obtain a mixed solution , adding the pretreated ac...
Embodiment 3
[0043] The catalyst is prepared by the following steps:
[0044] (1) Activated carbon pretreatment: Mix activated carbon with 8wt% aqueous nitric acid solution in a mass ratio of 1:4, stir evenly, treat at 70 °C for 3 hours, wash with deionized water until neutral, and dry at 120 °C for 8 hours to obtain Pretreated activated carbon.
[0045] (2) Preparation of catalyst precursor: adding platinum nitrate and yttrium nitrate into distilled water, stirring and heating to 80° C., after being completely dissolved and cooled, a solution containing auxiliary components is obtained, which is set aside for use; the active component palladium chloride Dissolve into dilute hydrochloric acid with a mass fraction of 6% to obtain a solution containing active components. After mixing the solution containing active components with the solution containing auxiliary components, adjust the pH of the solution to 6.5 with sodium carbonate to obtain a mixed solution. , adding the pretreated activa...
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Abstract
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