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THE UPS STUDY OF ETHYLENE AND ACETYLENE CO-ADSORPTION WITH K ON Ru(1010) SURFACE

ZHANG JIAN-HUA WU YUE ZUANG YOU-YI ZHANG HAN-JIE WANG JIAN LI HAI-YANG HE PI-MO BAO SHI-NING LIU FENG-QIN Y. KUIREXI QIAN HAI-JIE

THE UPS STUDY OF ETHYLENE AND ACETYLENE CO-ADSORPTION WITH K ON Ru(1010) SURFACE

ZHANG JIAN-HUA, WU YUE, ZUANG YOU-YI, ZHANG HAN-JIE, WANG JIAN, LI HAI-YANG, HE PI-MO, BAO SHI-NING, LIU FENG-QIN, Y. KUIREXI, QIAN HAI-JIE
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  • Received Date:  25 August 2000
  • Accepted Date:  22 October 2000
  • Published Online:  20 June 2001

THE UPS STUDY OF ETHYLENE AND ACETYLENE CO-ADSORPTION WITH K ON Ru(1010) SURFACE

  • 1. (1)浙江大学物理系,杭州310027; (2)中国科学院高能物理研究所同步辐射实验室,北京100039

Abstract: The ethylene (C2H4)and acetylene (C2H2)co-adsorbed with K on Ru(1010)surface has been studied by using ultraviolet spectroscopy(UPS).The results show that ethylene (C2H4) is absorbed in molecular state on Ru(1010)surface stably below 200 K.The dehydrogenated of ethylene occurs at 200 K.The main product of the dehydrogenation of the absorbed ethylene (C2H4)is the acetylene (C2H2).After the dehydrogenation of the absorbed ethylene(C2H4),the binding energies of σCC and σCH bonds have an increase of 0.2 eV and 0.5 eV respectively.The acetylene is absorbed in molecular state on Ru(1010)surface stably at room temperature.On a K pre-covered surface,the σCC peak disappears at room temperature.The element K promotes the dissociation of acetylene on Ru(1010)surface.

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