Preparation method and application of cobalt-ruthenium bimetal heterogeneous catalyst
A heterogeneous catalyst, bimetallic technology, applied in catalyst activation/preparation, preparation of organic compounds, preparation of carbon-based compounds, etc., can solve the problems of low value of crude glycerin, affecting the economy of biodiesel industry, and uneconomical purification. , to achieve good catalytic stability, catalyst activity and high selectivity, and the effect of high selectivity
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Embodiment 1
[0044] Ammonium dihydrogen phosphate (NH 4 H 2 PO 4 ) The aqueous solution (1.0mol / L, 64ml) was added dropwise to the aqueous solution of zirconium oxychloride (1.0mol / L, 32ml), the molar ratio of ammonium dihydrogen phosphate to zirconium oxychloride was 2:1, at room temperature Stir overnight, then filter with suction, wash with deionized water until the pH of the filtrate is 6, and check that there is no Cl with silver nitrate solution -1 Then, the white precipitate was dried at 100°C for 12 hours, and the dried zirconium phosphate was calcined in a muffle furnace at 450°C for 4 hours, and ground into powder with a mortar to obtain zirconium phosphate.
[0045] Weigh 0.098g of cobalt nitrate hexahydrate, dissolve it in 1.2ml of water, then weigh 1g of zirconium phosphate obtained above and add it to the solution, stir at 40℃ for 24h, and dry at 100℃ for 12h. The obtained catalyst is named Co / ZrP, Co supported The amount is 2%; Weigh out 0.053g of ruthenium trichloride trihydrat...
Embodiment 2
[0048] Ammonium dihydrogen phosphate (NH 4 H 2 PO 4 ) The aqueous solution (1.0mol / L, 64ml) was added dropwise to the aqueous solution of zirconium oxychloride (1.0mol / L, 32ml), the molar ratio of ammonium dihydrogen phosphate to zirconium oxychloride was 2:1, at room temperature Stir overnight, then filter with suction, wash with deionized water until the pH of the filtrate is 6, and check that there is no Cl with silver nitrate solution -1 Then, the white precipitate was dried at 100°C for 12 hours, and the dried zirconium phosphate was calcined in a muffle furnace at 350°C for 4 hours and ground into a powder with a mortar to obtain zirconium phosphate.
[0049] Weigh 0.147g of cobalt nitrate hexahydrate and dissolve it in 1.2ml of water, then weigh 1g of zirconium phosphate obtained above and add it to the solution, stir at 40°C for 24h, and dry at 100°C for 12h. The resulting catalyst is named Co / ZrP, Co supported The amount is 3%; Weigh 0.053g of ruthenium trichloride trihyd...
Embodiment 3
[0052] Ammonium dihydrogen phosphate (NH 4 H 2 PO 4 ) The aqueous solution (1.0mol / L, 64ml) was added dropwise to the aqueous solution of zirconium oxychloride (1.0mol / L, 32ml), the molar ratio of ammonium dihydrogen phosphate to zirconium oxychloride was 2:1, at room temperature Stir overnight, then filter with suction, wash with deionized water until the pH of the filtrate is 6, and check that there is no Cl with silver nitrate solution -1 Then, the white precipitate was dried at 100°C for 12 hours, and the dried zirconium phosphate was calcined in a muffle furnace at 400°C for 4 hours, and ground into a powder with a mortar to obtain zirconium phosphate.
[0053] Weigh 0.196g of cobalt nitrate hexahydrate and dissolve it in 1.2ml of water, then weigh 1g of the zirconium phosphate obtained above and add it to the solution, stir for 24h at 40°C, and dry for 12h at 100°C. The obtained catalyst is named Co / ZrP, Co supported The amount is 4%; Weigh 0.053g of ruthenium trichloride tr...
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