Catalyst for hydrogenation reaction and method for producing same
The present invention can facilitate the reduction of nickel by using copper as an accelerator when a hydrogenation catalyst including nickel is produced by using a deposition-precipitation (DP) method. According to an embodiment of the present invention, provided is a catalyst for a hydrogenation reaction that includes 40-80 parts by weight of nickel as a catalyst active component, 0.01-5 parts by weight of copper as an accelerator, and 10-30 parts by weight of a silica support based on 100 parts by weight of the entire catalyst. Therefore, although a high content of nickel is supported, the catalyst has a small crystal size of an activated metal and a high degree of dispersion and provides excellent hydrogenation activity. In addition, silica with a controlled particle size distribution is used as a support, so that the produced catalyst also has a uniform particle size distribution and is suppressed from being smashed at a high-speed rotation in the hydrogenation reaction, thereby providing a high filtration rate.
1 . A catalyst for a hydrogenation reaction, comprising, based on 100 parts by weight of the entire catalyst, 60.9-80 parts by weight of nickel as a catalyst active component, 0.01-5 parts by weight of copper as an accelerator, and 10-30 parts by weight of silica as a support,
wherein the silica as the support has a specific surface area of 300-400 m 2 /g and an average particle size of 3-10 μm, wherein a crystal size of the nickel is 4.9-6.6 nm.
2 . The catalyst of claim 1 , wherein an average particle size (d 50 ) of the catalyst is 3-10 μm, and a volume ratio of the catalyst having a particle size of 1 μm or less is 10% or less.
3 . The catalyst of claim 1 , wherein the catalyst has a specific surface area of 150-300 m 2 /g.
4 . A method for producing a catalyst for a hydrogenation reaction, the method comprising:
preparing a first solution by dissolving a nickel precursor in a solvent so that a weight concentration (g/L) of nickel in a solution is 25-250;
preparing a second solution by adding a copper precursor to the first solution so that a weight concentration (g/L) of copper in a solution is 0.01-5;
preparing a third solution by dispersing a silica support in the second solution so that a weight concentration (g/L) of silica in a solution is 10-40;
adding the third solution to a precipitation container, stirring the third solution, and heating the third solution to a temperature of 50-120° C.;
adding a pH control agent to the heated third solution, causing the nickel and copper precursors to form a precipitate, and depositing the precipitate on the solid silica support;
washing and filtering the supported catalyst and drying the supported catalyst at 100-200° C. for 5-24 hours;
sintering the dried catalyst in air at a temperature of 200-500° C.; and
activating the sintered catalyst by reducing the sintered catalyst at a temperature of 200-500° C. in a hydrogen atmosphere.
5 . The method of claim 4 , further comprising passivating the activated catalyst.
6 . The method of claim 5 , wherein the passivating is performed by passivating the activated catalyst with a nitrogen mixed gas including 0.1-20% oxygen.
7 . The method of claim 4 , further comprising passivating the activated catalyst by depositing the activated catalyst in a solution including a hydrocarbon resin.
8 . The method of claim 4 , wherein the precipitation is performed at pH 7-9.
9 . A method for hydrogenating a hydrocarbon resin, wherein the hydrocarbon resin is brought into contact with hydrogen in the presence of the catalyst produced by the method of claim 4 .