Patent ID: 9675959
Date: 2017-06-13
CPC Classifications: B01D,B01J,C01B,C01P,Y10T

Claim:
1. A chromatographic stationary phase, comprising porous silicon oxynitride particles represented by formula SiO x N y , wherein 0≦x<2, 0<y≦4/3, and 2x+3y=4, wherein a surface of said particles comprises a surface modifier having a formula R″Z′, Z′ is selected from the group consisting of Cl, Br, I, acyl chloride, aldehyde, and an epoxy, and R″ is selected from the group consisting of alkyl, alkenyl, alkynyl, aryl, and an alkyl or aryl group containing an embedded polar functionality, wherein alkyl, alkenyl, alkynyl, aryl are each independently unsubstituted or having one or more substituents selected from the group consisting of halogen, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino, alkyl amino, dialkylamino, arylamino, diarylamino, alkylarylamino, acylamino, alkylcarbonylamino, arylcarbonylamino, carbamoyl, ureido, amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfate, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, aralkyl, diol, ester, an aromatic moiety, and a heteroaromatic moiety.