Open AccessTHE UPS STUDY OF ETHYLENE AND ACETYLENE CO-ADSORPTION WITH K ON Ru(1010) SURFACE
Author(s) -
Jianhua Zhang,
Wu Yue,
Zuang You-Yi,
Hanjie Zhang,
Jian Wang,
Haiyang Li,
He Pi-Mo,
Bao Shi-Ning,
Fengqin Liu,
Y. Kuirexi,
Qian HaiJie
Publication year - 2001
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.50.1189
Subject(s) - acetylene , ethylene , dehydrogenation , dissociation (chemistry) , adsorption , materials science , photochemistry , chemistry , catalysis , organic chemistry
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.