Patent ID: 6326328
Filing Date: 2001-12-04
Classification: B01J

Abstract:
A process for the preparation of a shaped solid acid catalyst which comprises:(a) kneading a hydroxide and/or hydrated oxide of aluminum, a hydroxide and/or hydrated oxide of zirconium, and a sulfureous compound,(b) shaping the kneaded mixture, and(c) calcining the obtained shaped material at such a temperature as to give tetragonal zirconia, wherein the weight percentage of the alumina and/or hydrous alumina to the sum total of the zirconia and/or hydrous zirconia and the alumina and/or hydrous alumina is 5 to 50% by weight, the weights of the zirconia and/or hydrous zirconia and the alumina and/or hydrous alumina being expressed in terms of the weights of zirconia and alumina, respectively, in the solid catalyst.