Patent ID: 8299312

Claim:
A process for dimerizing olefins in the presence of a catalyst, wherein a hydrocarbon feedstock containing C 4 to C 6 isoolefins is subjected to dimerization, said process comprising the steps of Contacting, in at least one reaction zone, the C 4 to C 6 isoolefins at conditions conducive to dimerization with a catalytic material comprising an acidic mesoporous molecular sieve embedded with a zeolite, the catalytic material being thermally stable at a temperature of at least 900° C., wherein said acidic mesoporous molecular sieve embedded with a zeolite is produced by preparing a mesoporous molecular sieve gel mixture, introducing a zeolite nuclei and homogenizing and dispersing said zeolite nuclei in said molecular sieve, and carrying out the contacting step essentially in the absence of butadiene and water in the feedstock.