Abstract: According to the present invention, a method for producing a catalyst for use in the production of a methylamine compound can be provided, wherein the catalyst comprises a modified crystalline silicoaluminophosphate salt molecular sieve. The method comprises: a moisture control step of adsorbing moisture onto a crystalline silicoaluminophosphate salt molecular sieve in an amount of 5 to 30 wt % of the crystalline silicoaluminophosphate salt molecular sieve; and a step of heating the crystalline silicoaluminophosphate salt molecular sieve having moisture adsorbed thereon under a pressure of 0.1 MPa or more and at a temperature of 130 to 350° C. for 5 to 40 hours.

Abstract: According to the present invention, a method for producing a catalyst for use in the production of a methylamine compound can be provided, wherein the catalyst comprises a modified crystalline silicoaluminophosphate salt molecular sieve. The method comprises: a moisture control step of adsorbing moisture onto a crystalline silicoaluminophosphate salt molecular sieve in an amount of 5 to 30 wt % of the crystalline silicoaluminophosphate salt molecular sieve; and a step of heating the crystalline silicoaluminophosphate salt molecular sieve having moisture adsorbed thereon under a pressure of 0.1 MPa or more and at a temperature of 130 to 350° C. for 5 to 40 hours.

Abstract: The present invention relates to a method for preparing optically active N-methylamino acids and/or optically active N-methylamino acid amides by subjecting the cells or treatment products of a microorganism belonging to the Mycoplana genus to the hydrolysis with N-methylamino acid amide to give an optically active N-methylamino acid and an optically active N-methylamino acid amide. According to the present invention, optically active N-methylamino acids and optically active N-methylamino acid amides useful as the raw material of pharmaceuticals can be stereoselectively obtained with good efficiency.

Abstract: The present invention relates to a method for producing D- or L-tert-leucine or D- or L-tert-leucine amide by reacting DL-tert-leucine amide with a biocatalyst selected from the group consisting of an enzyme capable of hydrolyzing the DL-tert-leucine amide stereoselectively, cells of a microorganism having the enzyme, a material produced by the treatment of the cells, an immobilized enzyme produced by immobilizing the enzyme onto a carrier, immobilized cells produced by immobilizing the cells onto a carrier, and an immobilized cell treatment product obtained by immobilizing the cell treatment product onto a carrier to thereby hydrolyze the DL-tert-leucine amide, wherein the hydrolysis is carried out with separating ammonia produced by the hydrolysis from the hydrolysis reaction solution.

Abstract: Problems on catalyst production and catalyst performance with respect to conventional 8-oxygen-membered ring micropore-containing crystalline silicoaluminophosphate molecular sieves as non-equilibrium methylamine synthesis catalysts, are resolved. A chabazite type crystalline silicoaluminophosphate molecular sieve having high purity and high crystallinity and having, on a crystal grain surface, an amorphous oxide layer whose Si/Al atomic ratio is greater than that of the whole crystal grain can be stably produced with high yield with the use of a small amount of structure directing agents by the present method characterized in that hydrothermal treatment conducted in the production of 8-oxygen-membered ring micropore-containing crystalline silicoaluminophosphate sieves is controlled under specified treating conditions.

Abstract: Problems on catalyst production and catalyst performance with respect to conventional 8-oxygen-membered ring micropore-containing crystalline silicoaluminophosphate molecular sieves as non-equilibrium methylamine synthesis catalysts, are resolved. A chabazite type crystalline silicoaluminophosphate molecular sieve having high purity and high crystallinity and having, on a crystal grain surface, an amorphous oxide layer whose Si/Al atomic ratio is greater than that of the whole crystal grain can be stably produced with high yield with the use of a small amount of structure directing agents by the present method characterized in that hydrothermal treatment conducted in the production of 8-oxygen-membered ring micropore-containing crystalline silicoaluminophosphate sieves is controlled under specified treating conditions.