Patent ID: 11884615
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A process for isomerization of a hydrocarbon feed comprising ortho-xylene and/or meta-xylene comprising contacting the hydrocarbon feed with isomerization catalyst particles containing framework-modified beta-type (*BEA) zeolite in which a portion of aluminum atoms constituting a zeolite framework thereof is substituted with zirconium atoms and/or hafnium atoms, wherein the framework-modified *BEA zeolite has a crystal lattice constant of a=1.260 to 1.270 nm, b=1.260 to 1.270 nm, and c=2.620 to 2.650 nm, a specific surface area of 400 to 800 m2/g, and a molar ratio of SiO2 to Al2O3 of 10 to 70; and
the framework-modified *BEA zeolite being an active catalytic material or active support material;
wherein the ortho-xylene and/or meta-xylene are converted to para-xylene.