Method for preparing nano noble metal hydrogenation catalyst by substitution method and its use
A hydrogenation catalyst and chemical replacement technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problems of high cost and cumbersome preparation process, and achieve The effects of easy regeneration, simple preparation technology, and good industrial application prospects
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Embodiment 2
[0043] In a 70 ml autoclave, add 0.1 gram of hydrated ruthenium trichloride solid, 20-60 ml of deionized water, and metal nickel powder with a particle size of 20-500 microns in a molar ratio of 1:50-1:2000 Put it into the autoclave, replace the air with inert nitrogen gas at room temperature, press to 0.5MPa, heat up to 50-80°C, start stirring, react for 1 hour, cool to room temperature, open the kettle, use deionized water, repeat several times Washing the solid in the still can make the nickel-loaded nanometer ruthenium catalyst.
[0044] Take 2 grams of the catalyst prepared in the previous step, put it in an autoclave, add 20 ml of benzene, seal the autoclave, replace it with hydrogen, flush the pressure with hydrogen to 1.0 MPa, heat up to 60°C, start stirring, and react for 1 hour. According to gas chromatography analysis, 100% of benzene was converted into cyclohexane.
Embodiment 3
[0046] In a 70 ml autoclave, add 0.1 g of hydrated ruthenium trichloride solid, 20-60 ml of deionized water, and metal iron powder with a particle size of 20-500 microns in a molar ratio of 1:50-1:2000 Put it into the autoclave, replace the air with nitrogen at room temperature, press to 0.5MPa, heat up to 30-80°C, start stirring, react for 1 hour, cool to room temperature, open the kettle, and wash the kettle repeatedly with deionized water Medium solid, that is, the iron-supported nano-ruthenium catalyst is prepared.
[0047] Get about 2 grams of catalysts obtained in the previous step and place them in an autoclave, add 20 milliliters of acetone, and other conditions are the same as in Example 2, and 100% of acetone is converted into isopropanol.
Embodiment 4
[0049] In a 100 ml autoclave, add 0.1 g of NaCl hydrate solid, 40 ml of acetone, and metal zinc powder with a particle size of 20-500 microns in a molar ratio of 1:50-1:2000 into the autoclave , after replacing the air with nitrogen gas at normal temperature, heat up to 30-60°C, stop the reaction after 40 minutes, wash the solid in the kettle repeatedly with acetone, and obtain a zinc-loaded nano-ruthenium catalyst.
[0050] Get about 2 grams of catalysts prepared in the previous step and put them in an autoclave, add 20 milliliters of phenol, the reaction temperature is 90° C., the hydrogen pressure is 2.0 MPa, after reacting for 2 hours, sampling analysis shows that 100% of phenol is converted into cyclohexanol.
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