Supported iridium catalysts

Abstract

A method of converting at least one first alkane to a mixture of at least one low molecular weight alkane (optionally also including additional lower and/or higher molecular weight alkanes) and at least one high molecular weight alkane, comprises: reacting a first alkane in the presence of dual catalyst system comprising a first catalyst (i.e., a hydrogen transfer catalyst) and a second catalyst (i.e., a metathesis catalyst) to produce a mixture of low and high molecular weight alkanes.

1 - 19 . (canceled) 
     
     
         20 . A composition comprising, alone or in combination,
 (i) an iridium pincer complex hydrogen transfer catalyst immobilized on a solid support by (a) Lewis acid:Lewis base binding of said catalyst to a solid support; (b) covalent coupling of said catalyst to a solid support by a silicone or siloxane-containing linker; or (c) covalent coupling of said catalyst to a polystyrene support; and   (ii) optionally a metathesis catalyst immobilized on a solid support.   
     
     
         21 . The composition of  claim 20 , wherein said metathesis catalyst is selected from the group consisting of Schrock catalysts, molybdenum catalysts, tungsten oxide catalysts, rhenium oxide catalysts, and mixtures thereof 
     
     
         22 . The composition of  claim 20 , wherein said hydrogen transfer catalyst and said metathesis catalyst are immobilized on the same solid support. 
     
     
         23 . The composition of  claim 20 , wherein said hydrogen transfer catalyst and said metathesis catalyst are immobilized on a different solid support. 
     
     
         24 - 33 . (canceled)