Title: Process for producing dimethylamine
Application Number: 95191520 Application Date: 1995.12.05
Publication Number: 1140446 Publication Date: 1997.01.15
Approval Pub. Date: 2002.05.22 Granted Pub. Date: 2002.05.22
International Classifi-cation: B01J29/18;C07B61/00;C07C209/02;C07C209/16;C07C211/04
Applicant(s) Name: Nitto Kagaku Kogyo K.K. Address:
Inventor(s) Name: Fukatsu Michio;Nihijima Katsumasa;Narita Takeshi
Attorney & Agent: SUN AI
Abstract:
    To develop a zeolite catalyst which can prevent the drastic lowering of dimethylamine selectivity to be caused in the production of dimethylamine using a zeolite catalyst when the conversion of methanol is high, and which can give higher dimethylamine selectivity and lower trimethylamine selectivity as well as higher methanol-consuming reaction activity; and to provide a process for producing dimethylamine with high selectivity, using the catalyst. A process for producing dimethylamine by allowing methanol, or methanol and a methylamine mixture, or a methylamine mixture to react with ammonia in the gaseous phase in the presence of a catalyst, characterized in that a modified zeolite prepared by treating a zeolite with a solution containing a chelating agent is used as the catalyst.
Time: 4