Patent ID: 6121186
Filing Date: 2000-09-19
Classification: B01J,C07C

Abstract:
A catalyst containing chlorine, platinum and a formed support comprising gamma alumina and optionally eta alumina, the catalyst being characterized in that the smallest average dimension of said support is in the range 0.8 mm to 2 mm, that the chlorine content is in the range of 4.5% to 15% by weight, said catalyst having been prepared by immersing gamma alumina spheres or extrudates in an aqueous chloroplatinic acid solution, evaporating the solution to dryness, calcining the resultant dried impregnated spheres or extrudates in an air stream to remove chlorine, contacting the resultant platinum impregnated spheres or extrudates with carbon tetrachloride as the only halogenating agent, and removing unreacted carbon tetrachloride.