A nitrogen-cobalt co-doped porous carbon-supported sulfur-zinc-cobalt catalytic material and its preparation method and application
A catalytic material and co-doping technology, which is applied in the preparation of amino compounds, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of expensive precursors, complicated preparation processes, and difficulty in scaling up production, and achieve improved hydrogenation. High efficiency, improved catalytic activity, good versatility
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Embodiment 1
[0042] Preparation of Co@NPC: 10g bovine serum albumin was dissolved in 20mL double distilled water, and then 1.75g CoCl 2 ·6H 2 O was mixed in the above solution and stirred magnetically for 1 h. The resulting protein complex was lyophilized for 24 hours to yield a solid. The lyophilized solid was then ground into a powder and then heated at 5°C min -1 The heating rate of the powder is pyrolyzed to 800°C, and at 800°C flowing nitrogen (40mL min -1 ) atmosphere for 2h, then naturally cooled to room temperature. Automatically grind the obtained solid into carbon powder with agate mortar, then add it into 1M HCl aqueous solution, stir vigorously at 80°C for 8 hours, filter the obtained black dispersion on an organic microporous membrane, rinse with deionized water until the pH is neutral, Then use absolute ethanol. The filtered solid was dried overnight in a vacuum oven at 40°C.
Embodiment 2
[0044] CoN x -Co x Preparation of ZnS@NPC-0.5: 10g of bovine serum albumin was dissolved in 20mL of double distilled water, and then 1.75g of CoCl 2 ·6H 2 O was mixed in the above solution and stirred magnetically for 1 h. Then dissolve a certain mass ratio of zinc chloride in water. The above two solutions were mixed and stored under magnetic stirring at room temperature for 1 h. The resulting pink protein complex was lyophilized for 24 hours to give a light blue solid. The mass ratio of zinc salt to bovine serum albumin is 0.5 / 1. The lyophilized solid was then ground into a powder and then heated at 5°C min -1 The heating rate of the powder is pyrolyzed to 800°C, and at 800°C flowing nitrogen (40mL min -1 ) atmosphere for 2h, then naturally cooled to room temperature. Automatically grind the obtained solid into carbon powder with agate mortar, then add it into 1M HCl aqueous solution, stir vigorously at 80°C for 8 hours, filter the obtained black dispersion on an o...
Embodiment 3
[0046] CoN x -Co x Preparation of ZnS@NPC-1: 10g of bovine serum albumin was dissolved in 20mL of twice distilled water, and then 1.75g of CoCl 2 ·6H 2 O was mixed in the above solution and stirred magnetically for 1 h. Then dissolve a certain mass ratio of zinc chloride in water. The above two solutions were mixed and stored under magnetic stirring at room temperature for 1 h. The resulting pink protein complex was lyophilized for 24 hours to give a light blue solid. The mass ratio of zinc salt to bovine serum albumin is 1 / 1. The lyophilized solid was then ground into a powder and then heated at 5°C min -1 The heating rate of the powder is pyrolyzed to 800°C, and at 800°C flowing nitrogen (40mL min -1 ) atmosphere for 2h, then naturally cooled to room temperature. Automatically grind the obtained solid into carbon powder with agate mortar, then add it into 1M HCl aqueous solution, stir vigorously at 80°C for 8 hours, filter the obtained black dispersion on an organi...
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