TDS STUDY OF ETHYLENE ON CLEAN AND Cs PRE-COVERED Ru(0001)SURFACE

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Abstract
The ethylene(C2H4)adsorbed on Ru(0001)surface has been studied by using thermal desorption spectroscopy(TDS).The results show that ethylene(C2H4)absorbs in molecular state on Ru(0001)surface stably below 200 K.The dehydrogenation of ethylene occurs at 200 K.The main product of the dehydrogenation of the absorbed ethylene(C2H4)is acetylene(C2H2).There are two adsorption states of ethylene on the clean Ru(0001)surface.Their desorption temperature is 275 K and 360 K respectively.The desorption temperature of acetylene is 350 K.The desorption temperature of both acetylene and ethylene rises with increasing Cs coverage.

Keywords:
ethylene /

Ru(0001)surface /

Cs/Ru(0001)surface /

/
Authors and contacts
ZHUANG YOU-YI¹,

WU YUE²,

ZHANG JIAN-HUA²,

ZHANG HAN-JIE²,

LI BO²,

LI HAI-YANG²,

HE PI-MO²,

BAO SHI-NING²

(1)温州师范学院物理系; (2)浙江大学物理系,杭州310027
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