Simple preparation method and use of support of catalyst for hydrogenation
AssigneeNanjing Tech University
InventorsJiuxuan Zhang, Liu Yang, Weihong Xing, Rizhi Chen
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Abstract
A simple preparation method and use of a support of a catalyst for hydrogenation are provided. The support is prepared by a direct mixing method as follows: 2-methylimidazole is directly mixed with different cobalt sources, and then calcination and acid-washing are conducted. This method has advantages such as simple preparation process flow, short preparation cycle, low raw material cost, and high support output. A Pd@CN catalyst prepared from the support can exhibit a high catalytic activity when used in a reaction system for phenol hydrogenation to prepare cyclohexanone.
Claims10
A simple preparation method of a support of a catalyst for hydrogenation, comprising the following steps:
- step 1, mixing 2-methylimidazole with a cobalt source to produce a mixture;
- step 2, calcining the mixture obtained in the step 1 in an Ar atmosphere to produce Co@CN;
- step 3, adding deionized water and a concentrated nitric acid solution to the Co@CN and stirring;
- and
- step 4, conducting suction filtration to produce a solid, washing the solid several times with deionized water, and oven-drying to produce a nitrogen-doped carbon (CN) support;
- wherein in the step 3, the concentrated nitric acid solution has a mass fraction of 66%, the Co@CN, the deionized water, and the concentrated nitric acid solution are in a mass ratio of 1:(20-30):(20-30), and the stirring is conducted for 30 min to 90 min at a temperature of 30° C. to 90° C. and a rate of 50 rpm to 300 rpm.
Dependencies are inferred from the claim text.