Selective hydrogenation catalyst and selective hydrogenation method using the same
AssigneeKorea Research Institute of Chemical Technology
InventorsJi Hoon Park, Kwan Yong Jeong, Soo Min Kim, Tae Sun Chang, Iljeong Heo
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Abstract
The present invention relates to a Ru—Pd bimetallic catalyst for use in hydrogenation of a compound, and more particularly to a catalyst prepared by loading both ruthenium and palladium on a g-C3N4 support and to a selective hydrogenation process of a pyridine group in a reaction system containing both a pyridine group and a benzene group using the catalyst.
Claims6
A selective hydrogenation method, comprising selectively hydrogenating a pyridine compound of Chemical Formula 2 below in a mixture of a benzene compound represented by Chemical Formula 1 below and the pyridine compound represented by Chemical Formula 2 using a Ru—Pd/g-C3N4 catalyst in which ruthenium and palladium as active components are loaded on a g-C3N4 support so that a sum of weights of the active components is 0.1 to 15 wt % based on a total weight of the catalyst including the support and a weight ratio (b/a) of the ruthenium (b) relative to the palladium (a) ranges from 0.25 to 10:
- wherein, in Chemical Formulas 1 and 2, R is hydrogen, a C1-C13 alkyl or cycloalkyl group, a C7-C13 arylalkyl group, C1-C13 alkyl alcohol, or C1-C13 alkylether.
A selective hydrogenation method, comprising selectively hydrogenating a pyridine group in a compound represented by Chemical Formula 3 below using a Ru—Pd/g-C3N4 catalyst in which ruthenium and palladium as active components are loaded on a g-C3N4 support so that a sum of weights of the active components is 0.1 to 15 wt % based on a total weight of the catalyst including the support and a weight ratio (b/a) of the ruthenium (b) relative to the palladium (a) ranges from 0.25 to 10:
- in Chemical Formula 3,
- Z represents hydrogen;
- a C1-C6 alkyl group;
- C1-C6 alkyl alcohol;
- C1-C6 alkylether;
- or
- wherein Q is CH or N,
- R1 represents hydrogen, a C1-C6 alkyl group, C1-C6 alkyl alcohol, C1-C6 alkylether or
- wherein * denotes a point of attachment to the Chemical Formula 3,
- R2 represents hydrogen, a C1-C6 alkyl group, C1-C6 alkyl alcohol or C1-C6 alkylether,
- R3 represents hydrogen, a C1-C6 alkyl group, C1-C6 alkyl alcohol or C1-C6 alkylether, and
- X1 or X2 represents a single bond line;
- —(CHR4)n—, wherein n is an integer of 1 to 3, and R4 is H, OH, or a C1-C6 alkyl group, —C(═CH2)—, —C(O)—;
- or —N(R5)—, wherein R5 is hydrogen or a C1-C6 alkyl group.
A selective hydrogenation method, comprising selectively hydrogenating a pyridine compound in a mixture of a benzene compound and the pyridine compound using a Ru—Pd/g-C3N4 catalyst in which ruthenium and palladium as active components are loaded on a g-C3N4 support so that a sum of weights of the active components is 0.1 to 15 wt % based on a total weight of the catalyst including the support and a weight ratio (b/a) of the ruthenium (b) relative to the palladium (a) ranges from 0.25 to 10:
- wherein the benzene compound is at least one selected from among benzene, toluene, xylene, cyclohexyltoluene, diphenylmethane, benzyl alcohol, phenylethyl alcohol, methyl phenyl ether, and ethyl phenyl ether, and
- the pyridine compound is at least one selected from among pyridine, methylpyridine, ethylpyridine, cyclohexyl methylpyridine, benzylpyridine, pyridinemethanol, pyridylethanol, methoxypyridine, and ethoxypyridine.
Dependencies are inferred from the claim text.