Patent ID: 9174203
Filing Date: 2015-11-03
Classification: B01J,C07C,Y02P

Abstract:
1. A method of making a catalyst, the method comprising: a) providing a solid particulate silicate MCM-41 mesoporous substrate having surface silanol groups that define available sites for postgrafting with catalytic functional groups; b) stirring a weight of the solid particulate silicate MCM-41 mesoporous substrate in ethanol in a first vessel; c) heating the weight of the solid particulate silicate MCM-41 mesoporous substrate in ethanol in the first vessel to a reflux temperature of 78° C. and adding a weight of 3-aminopropylsilane with stirring; d) maintaining the first vessel at the reflux temperature of 78° C. for a refluxing duration to cause postgrafting of 3-aminopropyl groups onto a portion of the available sites of the solid particulate silicate MCM-41 mesoporous substrate to form first solid particulate catalyst in the ethanol, the postgrafted 3-aminopropyl groups replacing between 6 and 15 percent of the surface silanol groups defining the available sites, and the remainder of surface silanol groups remaining as available sites.