1催化氢化 H2G适量) R—C≡C-H R-CH=H2 H2-R-CHA-CH3 催化剂Pd或Ⅳi Pt R-C=C-H+H2(过量)P,R-CH2-CH3 College Chemistry of jilin Normal universityCollege Chemistry of Jilin Normal University 1.催化氢化