Catalyst composition for preparing hydroxylamine
AssigneeChina Petrochemical Development Corporation
InventorsPin-To Yao, Chun-Kao Wang, Cheng-Fa Hsieh
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Abstract
This invention provides a catalyst composition for preparing hydroxylamine, which comprises palladium, a platinum compound, a germanium compound and a carrier, wherein a halogen concentration of the composition is no more than 10 ppm. The catalyst composition is prevented from poisoning by halogens, and therefore the catalyst composition has high selectivity and catalytic activity. Further, the weight ratio of palladium and platinum in the catalyst composition ranges from 100:1 to 1000:1, such that the catalyst composition can be used to solve the commonly observed problem, i.e., decreased selectivity due to the excessive amount of platinum.
Claims9
A catalyst composition for preparing hydroxylamine, comprising palladium, a platinum compound, an activator, and a carrier, wherein the activator contains a metal selected from the group consisting of Cu, Ag, Au, Cd, Ga, In, Tl, Ge, Sn, Pb, As, Sb, Bi, and a combination thereof, and a halogen concentration of the catalyst composition is no more than 10 ppm;
- and
- wherein the weight ratio of palladium and platinum ranges from 125:1 to 900:1.
Dependencies are inferred from the claim text.