Patent ID: 8383079
Filing Date: 2013-02-26
Classification: C01B,C07C,Y02P

Abstract:
1. A process for converting an organic starting material into a product, the process comprising contacting the starting material with a catalyst comprising a crystalline molecular sieve comprising at least [AlO 4 ] and [PO 4 ] tetrahedral units and comprising a first framework structure defining a first set of uniformly distributed pores having an average cross-sectional dimension of from about 0.3 to less than 2 nanometers and further comprising a second framework structure defining a second set of uniformly distributed pores having an average cross-sectional dimension of from 2 to 50 nanometers, wherein the crystalline molecular sieve is first made by the process of: (a) in a first crystallization step, preparing a first reaction mixture comprising an organic directing agent and a source of SiO (b) acidifying the mother liquor having the crystallized CHA removed to a pH of about 6.0 to about 8.0 to form an acidified mother liquor, followed by combining the acidified mother liquor with nanoparticles of a removable material inert to the conditions used in (c); (c) in a second crystallization step, maintaining the mixture of acidified mother liquor and nanoparticles at a temperature within the range from 120 to 200° C. to form crystals of said molecular sieve between said nanoparticles; (d) removing said removable material; and (e) recovering said crystalline molecular sieve.