Reaction routes for hydrogenation of acetylene-ethylene mixtures using a double labelling method期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Reaction routes for hydrogenation of acetylene-ethylene mixtures using a double labelling method

Authors:	J. Margitfalvi L. Guczi A. H. Weiss

Affiliation:	(1) Institute of Isotopes of the Hungarian Academy of Sciences, P. O. Box 77, H-1525 Budapest, Hungary;(2) Worcester Polytechnic Institute, 01609 Worcester, Mass, USA;(3) Present address: Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Pusztaszeri ut 59/67, H-1025 Budapest, Hungary

Abstract:	Hydrogenation of C₂H₂:C₂H₄ mixtures using a double labelling method has been studied. Both in the presence and absence of ethylene the rate of acetylene hydrogenation on its partial pressure proceeds through a maximum and the rate is higher when ethylene is added. Using¹⁴C–C₂H₂ it was demonstrated that at low acetylene partial pressures the main route of acetylene hydrogenation was the formation of ethane and C₄ hydrocarbons. Using¹⁴C–C₂H₄ it was also shown that at certain acetylene partial pressures the formation of ethane from ethylene completely ceased. Different surface species are suggested and a reaction mechanism is proposed. C₂H₂:C₂H₄, . , , . C¹⁴–C₂H₂, , C₄. C¹⁴–C₂H₄, , . .

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