(2)InfluenceofpressureLiquid phase hydrogenation, Ph2 t, r ↑ 。Gasphasehydrogenation，与反应级数n有关(related toreaction order nr=f(PPA,PH,PBPPn>0,P↑,r（个别）n<0,P↑,r↓
Liquid phase hydrogenation，PH2↑,r ↑ 。 Gas phase hydrogenation，与反应级数n有关 （related to reaction order n） n > 0，P ↑，r ↑ n < 0， P ↑，r ↓ （个别） （2）Influence of pressure
3)influenceofhydrogenratioH2 excess,PH2↑,r 个, x↑Influence of solvent:Purpose:(1) The solid materials or products can be dissolved in thesolvent so as to proceed the reaction and separate products.(2) The reaction heat can be shift out, and heat effect can bedecrease by diluting reactants
(3) influence of hydrogen ratio H2 excess，PH2↑, r ↑ ，x ↑ Influence of solvent： Purpose： （1）The solid materials or products can be dissolved in the solvent so as to proceed the reaction and separate products. （2）The reaction heat can be shift out, and heat effect can be decrease by diluting reactants
4)Structureinfluence ofthereactantsDHydrogenation of alkenesKRCHCH2--RRCH--CH>C-CH.---R"RRtRC--CH2RHydrogenation of aromaticsC6H6>C6HsCH3>C6H4(CH3)2>C6H3(CH3)3
(4) Structure influence of the reactants ① Hydrogenation of alkenes ② Hydrogenation of aromatics C6H6>C6H5CH3>C6H4(CH3)2>C6H3(CH3)3
? Comparison of hydrogenation ratefor differenthydrocarbonWhen the hydrogenation reaction independentlyproceeds on the same catalyst, their rate seguence is:r烯烃>r炔烃，r烯烃>r芳烃，r二烯烃>r烯烃When the hydrogenation reaction simultaneity proceedson the same catalyst, theirrate sequence is:炔烃>二烯烃>r烯烃>r芳烃
③ Comparison of hydrogenation rate for different hydrocarbon When the hydrogenation reaction independently proceeds on the same catalyst, their rate sequence is: When the hydrogenation reaction simultaneity proceeds on the same catalyst, their rate sequence is:
@Hydrogenation ofthecompounds containing oxygenRCHO > R2CO;RCOOR>RCOOH5Hydrogenation of organic sulfidesR-SS-R>R--SH>RS-R>C4H&S>C4H4S
④ Hydrogenation of the compounds containing oxygen RCHO > R2CO； RCOOR > RCOOH ⑤ Hydrogenation of organic sulfides