Dear Mostafa Torkashvand thank you very much for asking this interesting technical question. For finding and accessing "CIF" and "POSCAR" files of catalysts, please refer to that "Catalyst Hub" database at
Catalyst Hub - First database in catalyst field
http://www.catalysthub.net/?p=2316
Currently 1,848,193 catalyst structures are listed in this database.
Good luck with your research and best wishes, Frank Edelmann