| http://www.w3.org/ns/prov#value | - Examples of the hydrogenation catalyst include (1) Ziegler-type homogeneous catalysts which are each composed of an organic acid salt of titanium, cobalt, nickel or the like and an organometal compound of lithium, aluminum or the like, (2) supported catalysts which are each composed of a carrier such as carbon or alumina and a platinum metal such as palladium or ruthenium supported on the carrier,
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