PAH Selective Hydrogenation Catalyst
A hydrogenation catalyst, a technology for polycyclic aromatic hydrocarbons, which can be applied in the directions of hydrogenation of aromatic hydrocarbons, molecular sieve catalysts, catalysts for physical/chemical processes, etc., and can solve the problems of low hydrogenation selectivity of polycyclic aromatic hydrocarbons and low yield of monocyclic aromatic hydrocarbons.
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Embodiment 1
[0022] Get 20 grams of alumina ball carrier, impregnate a certain nickel nitrate solution in equal volume, dry at 120°C for 4 hours, and roast at 550°C for 4 hours to obtain modified catalyst A1 with a nickel content of 2% (wt), and impregnate catalyst A1 with equal volume A certain chloroplatinic acid solution was obtained to obtain a core-shell metal layer catalyst B1 with a platinum content of 0.2% (wt).
[0023] Put 5 grams of core-shell metal layer catalyst B1 in the reactor, pass hydrogen to reduce at 450°C for 3 hours, then lower the temperature to 350°C, pass through hydrogen and materials containing toluene and naphthalene to contact with the catalyst to investigate the reaction activity. The reaction conditions are: the total weight space velocity is 10 hours -1 , the reaction temperature is 350°C, the reaction pressure is 3.0MPa, and the molecular ratio of hydrogen to hydrocarbon is 3.0. The reaction raw materials are toluene:naphthalene=90:10 (weight), and the rea...
Embodiment 2
[0025] Get 20 grams of alumina ball carrier, impregnate a certain nickel nitrate solution in equal volume, dry at 120°C for 4 hours, and roast at 550°C for 4 hours to obtain modified catalyst A2 with a nickel content of 5% (wt), impregnate catalyst A2 in equal volume A certain amount of chloroplatinic acid solution was used to obtain the core-shell metal catalyst B2 with a platinum content of 0.2% (wt).
[0026] Put 5 grams of core-shell metal layer catalyst B2 in the reactor, pass hydrogen to reduce at 450°C for 3 hours, then lower the temperature to 350°C, pass through hydrogen and materials containing toluene and naphthalene to contact with the catalyst to investigate the reaction activity. The reaction conditions are: the total weight space velocity is 10 hours -1 , the reaction temperature is 350°C, the reaction pressure is 3.0MPa, and the molecular ratio of hydrogen to hydrocarbon is 3.0. The reaction raw materials are toluene:naphthalene=90:10 (weight), and the reactio...
Embodiment 3
[0028] Get 20 grams of alumina ball carrier, impregnate a certain nickel nitrate solution in equal volume, dry at 120°C for 4 hours, and roast at 550°C for 4 hours to obtain modified catalyst A3 with a nickel content of 2% (wt), impregnate catalyst A3 in equal volume A certain chloroplatinic acid solution was obtained to obtain a core-shell metal layer catalyst B3 with a platinum content of 0.5% (wt).
[0029] Put 5 grams of core-shell metal layer catalyst B3 in the reactor, pass hydrogen to reduce at 450°C for 3 hours, then lower the temperature to 350°C, pass through hydrogen and materials containing toluene and naphthalene to contact the catalyst to investigate the reaction activity. The reaction conditions are: the total weight space velocity is 10 hours -1 , the reaction temperature is 350°C, the reaction pressure is 3.0MPa, and the molecular ratio of hydrogen to hydrocarbon is 3.0. The reaction raw materials are toluene:naphthalene=90:10 (weight), and the reaction perfo...
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