(1) Department of Chemistry and Ames Laboratory, Iowa State University, 229 Spedding Hall, 50011 Ames, IA, USA;(2) Department of Chemical Engineering and Ames Laboratory, Iowa State University, 231 Sweeney Hall, 50011 Ames, IA, USA
Abstract:
Multiple quantum spin counting is shown to yield an upper limit ofn = 6 for strongly bound, rigid intermediates CmHn in the reaction of ethylene over Ru/SiO2. The results eliminate the possibility of major components of such intermediates being polymer-like coke precursers. A precurser to 2-butene is one possible intermediate.