摘要:
PROBLEM TO BE SOLVED: To provide a shell catalyst which contains Ni, Cu and/or Pd and further Mn and/or Mo or contains Ni, Mn and Mo and has an open-pore catalytic carrier with a shell and to provide a method for producing the shell catalyst and use of the shell catalyst when hydrogenation is performed. SOLUTION: A production method of the shell catalyst comprises the steps of: forming a fluidized bed of the carrier by using a gas; fluidizing the carrier on an elliptical or circular route; spraying a solution of a catalytic metal compound toward the fluidized carrier; drying the metal compound-sprayed carrier; firing the dried carrier; and changing an oxidation state of a metal component of the sprayed metal compound to the oxidation state of zero. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a highly selective catalyst production method used for synthesis of vinyl acetate monomer, in hydrogenation of hydrocarbons, in particular selective hydrogenation of polyunsaturated hydrocarbon compounds, etc. or in oxidation of alcohols to aldehydes, ketones or carboxylic acids.SOLUTION: The shell catalyst includes, in an outer shell, one or more of chloride-free metallic compounds of Pd, Pt, Ag and Au, and in the production method, intermediate calcining is not performed between application of a precursor compound and temperature treatment.