| abstract |
A copper-based catalyst precursor for isomerizing a compound that has a portion of ß, γ-unsaturated alcohol, obtained by calcining a mixture containing copper, iron, aluminum and calcium silicate in which the atomic ratio of iron and aluminum with respect to copper (Fe + Al) / Cu is in a range of 1.71 to 2.5, the atomic ratio of aluminum to iron Al / Fe is in a range of 0.001 to 3.3 and calcium silicate is content of a range of 15% by weight to 65% by weight at a temperature in a range of 500 ° C to 1000 ° C, in which the mixture is a dry product of a coprecipitated mixture obtained by mixing a coprecipitate and calcium silicate, coprecipitated that it is obtained by reacting a mixed aqueous solution that includes a water soluble copper salt, a water soluble iron salt and a water soluble aluminum salt with a basic aqueous solution and in which the dried product is calcined in an atmosphere of air. |