Catalyst for hydrogenation removal of trace olefins in dimethyl ether, preparation method and application
A technology for hydrogenation of olefins and catalysts, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, and the preparation of organic compounds. It can solve the problems of high equipment investment, long process flow, and large energy consumption. problem, to achieve high catalyst activity and solve the effect of difficult separation
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Embodiment 1
[0021] Take 2.25mL of chloroplatinic acid solution and 0.19g of copper nitrate trihydrate in a beaker, add deionized water until the total mass of the mixed solution is 5g, configure it as an impregnation solution, and then take 5g of alumina particles between 20 mesh and 40 mesh, Equal-volume impregnation for 4 hours, followed by drying at 110°C for 12 hours and calcination at 350°C for 4 hours to obtain the catalyst Pt-Cu / Al2O3, in which the noble metal negative Pt loading is 0.5%, and the Cu loading is 1.0%, which is designated as catalyst A.
[0022] Using the same preparation method, 5 g of alumina particles were replaced with silicon dioxide, activated carbon, and titanium dioxide particles of the same quality and impregnated respectively, and the obtained catalysts were designated as catalyst B, catalyst C, and catalyst D.
Embodiment 2
[0024] Take 2.30mL of ruthenium chloride solution and 0.25g of nickel nitrate hexahydrate in a beaker, add deionized water until the total mass of the mixed solution is 5g, configure it as an impregnation solution, and then take 5g of alumina particles between 20 mesh and 40 mesh, Equal-volume impregnation for 4 hours, followed by drying at 110°C for 12 hours and calcination at 350°C for 4 hours to obtain the catalyst Ru-Ni / Al2O3, in which the noble metal negative Ru loading was 0.5%, and the Ni loading was 1.0%, which was designated as catalyst E.
[0025] Adopt the same preparation method, change the consumption of ruthenium chloride solution, get respectively 0.92ml, 3.22ml, 4.14ml, other operations remain unchanged, respectively obtain Ru loading 0.2%, the catalyst F that Ni loading is 1.0%; Ru Catalyst G with 0.7% Ni loading and 1.0% Ni loading; Catalyst H with 0.9% Ru loading and 1.0% Ni loading.
Embodiment 3
[0027] Take 2.37mL of palladium nitrate solution and 0.29g of nickel nitrate hexahydrate in a beaker, add deionized water until the total mass of the mixed solution is 5g, configure it as an impregnation solution, then take 5g of alumina particles between 20 mesh and 40 mesh, etc. Volume impregnation for 4 hours, followed by drying at 110°C for 12 hours and calcination at 350°C for 4 hours to obtain the catalyst Pd-Ni / Al2O3, in which the noble metal negative Pd loading is 0.5%, and the Ni loading is 1.5%, which is designated as catalyst I.
[0028] Using the same preparation method, replace 2.37ml of palladium nitrate solution with 2.05mL of rhodium trichloride solution, and keep other operations unchanged to obtain catalyst Rh-Ni / Al2O3, wherein the noble metal negative Rh loading capacity is 0.5%, and the Ni loading capacity is 1.5% %, denoted as catalyst J.
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