Method for regenerating a catalyst containing a CHA zeolite
AssigneeMitsubishi Chemical Corporation
InventorsMikio Hayashi, Masahiro Hara, Masashi Yamaguchi, Yumiko Yoshikawa, Takahiko Takewaki, Tohru Setoyama, Naoyuki Sakamoto
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a CHA zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
Claims7
A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising an aluminosilicate zeolite having a CHA structure as an active ingredient and having an ethylene conversion lowered through a reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
Dependencies are inferred from the claim text.