A Bifunctional Mechanism for Ethene Dimerization: Catalysis by Rhodium Complexes on Zeolite HY in the Absence of Halides


  • We acknowledge DOE Basic Energy Sciences for support (Contract No. FG02-04ER15513) and acknowledge beam time and support of the DOE Division of Materials Sciences for its role in the operation and development of beam line MR-CAT at the Advanced Photon Source at Argonne National Laboratory.


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No ligands needed: Rhodium complexes supported on HY zeolite catalyze the formation of C[BOND]C bonds by a new mechanism involving cooperation between the metal species and Brønsted acid sites of the zeolite support (see picture). The catalyst operates in the absence of ligands such as halides and shows high selectivity to n-butenes, even in an excess of H2.