KINETICS AND MECHANISM OF HYDROGENATION OF SOME OLEFINS CATALYZED BY ANCHORED MONTMORILLONITEBIPYRIDINEPALLADIUM(II) ACETATE

Kinetics of hydrogenation of some olefins such as 2, 5-furandione, cis -butenedioic acid, trans-butenedioic acid, cis-methylbutenedioate and trans-methylbutenedioate catalysed by anchored montmorillonitebipyridi nepalladium(II) acetate have been studied in THF medium. The observed rate was found to be first order with respect to partial pressure of h ydrogen and fractional order with respect to both [catalyst] and [subs trate]. The rate of hydrogenation follows the trend: 2,5-furandione > cis-butenedioic acid > trans-butenedioic acid > cis-methylbutenedioate > trans-methylbutenedioate. Thermodynamic parameters were evaluated, the rate law and a probable mechanism have been proposed.