▎ 摘　　要

NOVELTY - Ionic liquid homogeneous catalyst is claimed. The ionic liquid homogeneous catalyst is prepared by dissolving precursor of active component I and the precursor of active component II in a solvent, adding ionic liquid, mixing uniformly at 100-200degrees Celsius, and then reacting with ultrasonic and microwave to obtain final product, where the precursor of active component I, precursor of active component II and ionic liquid are fed in ratio 0.1-3 pts. wt. active component I precursor, 5-20 pts. wt. active component II precursor, 1-10 pts. wt. ionic liquid. The precursor of active component I is palladium, gold, ruthenium and/or platinum. The precursor of active component II is a copper precursor. The ionic liquid is imidazol-3-ium derivative (I), phosphonium compound (II), pyrrolidinium derivative (III) or pyridinium derivative (IV). USE - The ionic liquid homogeneous catalyst is useful in reaction of acetylene trimerization to benzene (claimed). ADVANTAGE - The ionic liquid homogeneous catalyst: has high acetylene conversion rate, excellent target product selectivity, and excellent catalyst stability in the benzene trimerization reaction of acetylene; produces multiphase macroscopically and homogeneous microscopically ionic liquid solid-supported catalyst by supporting the ionic liquid homogeneous catalyst on a porous solid carrier, which improves the production capacity of the catalyst on the basis of not affecting the catalytic performance and catalytic life. DETAILED DESCRIPTION - Ionic liquid homogeneous catalyst is claimed. The ionic liquid homogeneous catalyst is prepared by dissolving precursor of active component I and the precursor of active component II in a solvent, adding ionic liquid, mixing uniformly at 100-200degrees Celsius, and then reacting with ultrasonic and microwave to obtain final product, where the precursor of active component I, precursor of active component II and ionic liquid are fed in ratio 0.1-3 pts. wt. active component I precursor, 5-20 pts. wt. active component II precursor, 1-10 pts. wt. ionic liquid. The precursor of active component I is palladium, gold, ruthenium and/or platinum. The precursor of active component II is a copper precursor. The ionic liquid is imidazol-3-ium derivative of formula (I), phosphonium compound of formula (II), pyrrolidinium derivative of formula (III) or pyridinium derivative of formula (IV). R1 = H, CH3 or C2H5; R2 = CnH2n+1; n = 0-14; R3 = CkH2k+1; k = 0-4; R4, R5, R6 and R7 = phenyl group or CmH2m+1; m = 0-6; R12 and R13 = CpH2p+1; p = 0-6; R14 = CqH2q+1, sulfur or oxygen atom; q = 0-6; R15 = CrH2r+1; r = 0-16; X1- , X2-, X4- and X5- = chloride, bromide, acetate, hexafluorophosphate, tetrafluorophosphate, trifluoromethanesulfonimide, tetrafluoroborate, trifluoromethanesulfonate or p-toluenesulfonate. INDEPENDENT CLAIMS are also included for: (1) Ionic liquid solid-supported catalyst prepared by supporting the ionic liquid homogeneous catalyst on a carrier, where the carrier is a porous solid carrier; (2) Method for supporting the homogeneous ionic liquid catalyst on the carrier, comprising dispersing carrier, the precursor of active component I, and the precursor of active component II in a solvent, adding the ionic liquid, stirring for 1-2 hours, centrifuging to remove the supernatant, then performing hypergravity treatment, and finally vacuum drying to obtain ionic liquid solid-supported catalyst.