| http://www.w3.org/ns/prov#value | - Furthermore,in the impregnation method, decrease in a reforming ability is a caused sometimes by sintering (aggregation) of an active metal by heat.In a co-precipitation method general as a catalyst preparation method, a catalyst is prepared by precipitation of a metal oxide or metal hydroxide by adding an acid or alkali to an aqueous solution of an inorganic metal salt.
|
