Polycyclic aromatic hydrocarbon selectivity hydrogenation catalyst
A hydrogenation catalyst, a technology for polycyclic aromatic hydrocarbons, which can be applied in the direction of hydrogenation of aromatic hydrocarbons, molecular sieve catalysts, chemical elements of heterogeneous catalysts, etc. problem, to achieve the effect of improving the selective hydrogenation activity
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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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