Patent ID: 8691908

Claim:
A carbon nanomaterial-supported catalyst, comprising: (a) a carbon nanomaterial; and (b) a polymer grafted onto the carbon nanomaterial, wherein the polymer has a repeat unit containing a phosphonium salt and the polymer has a number average molecular weight of 1,000-200,000, wherein the repeat unit containing a phosphonium salt has a structure of formula I: wherein R 1 represents C 1 -C 10 alkylene, C 3 -C 8 cycloolefin, C 6 -C 12 arylene, an ester group, C 3 -C 8 cycloalkene or C 6 -C 12 arylene, wherein the carbon atom connected to phosphorus is replaced by a heteroatom, halogen substituted C 6 -C 12 arylene, fused C 6 -C 12 arylene, fused C 6 -C 12 arylene, wherein the hydrogen atom connected to carbon is replaced by C 6 -C 12 aryl, or a metal complex with a cycloalkylene as a ligand, wherein the cycloalkylene of the metal complex is bonded to a main chain of the polymer and phosphorus; R 2 , R 3 and R 4 are, independently, C 1 -C 10 alkyl, C 3 -C 8 cycloalkyl or C 6 -C 10 aryl; P represents phosphorus; X represents halogen; and n is an integer greater than 1 but less than 1500.