THE DEHYDROGENATION OF CYCLOHEXANE ON PT(100) - THE ROLE OF SURFACE-STRUCTURE IN DETERMINING THE REACTION PATHWAY

被引:22
作者
MARTIN, R [1 ]
GARDNER, P [1 ]
TUSHAUS, M [1 ]
BONEV, C [1 ]
BRADSHAW, AM [1 ]
JONES, TS [1 ]
机构
[1] UNIV LIVERPOOL,SURFACE SCI RES CTR,LIVERPOOL L69 3BX,ENGLAND
关键词
D O I
10.1016/0368-2048(90)80269-G
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
Cyclohexane, adsorbed at low temperature on the reconstructed (hex) phase surface of Pt{100}, shows a softened C-H mode and dehydrogenates to benzene on warming, in the same way as on the Pt{111} surface. On the (1 x 1) or "truncated bulk", surface of Pt{100}, however, the spectrum of the chemisorbed layer is more complex, there is no softened mode and dehydrogenation to benzene does not take place. Instead, there is conversion to an as yet unidentified hydrocarbon species, characterised by a single, sharp band at 2948 cm-1.
引用
收藏
页码:773 / 778
页数:6
相关论文
共 9 条
[1]   CHEMISORPTION OF CO ON UNRECONSTRUCTED PT(100)SURFACE [J].
BRODEN, G ;
PIRUG, G ;
BONZEL, HP .
SURFACE SCIENCE, 1978, 72 (01) :45-52
[2]   CARBON-HYDROGEN-TRANSITION METAL BONDS [J].
BROOKHART, M ;
GREEN, MLH .
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1983, 250 (01) :395-408
[3]   THE INFRARED-SPECTRUM OF CYCLOHEXANE ADSORBED ON PT(111) [J].
CHESTERS, MA ;
GARDNER, P .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1990, 46 (06) :1011-1015
[4]   CH VIBRATION SOFTENING AND DEHYDROGENATION OF HYDROCARBON MOLECULES ON NI(111) AND PT(111) [J].
DEMUTH, JE ;
IBACH, H ;
LEHWALD, S .
PHYSICAL REVIEW LETTERS, 1978, 40 (15) :1044-1047
[5]   DETECTION OF REACTION INTERMEDIATES IN THE CONVERSION OF CYCLOHEXANE TO BENZENE ON PT(111) [J].
LAND, DP ;
PETTIETTEHALL, CL ;
MCIVER, RT ;
HEMMINGER, JC .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (15) :5970-5972
[6]  
MARTIN R, IN PRESS
[7]   THE PT(100)(5X20)REVERSIBLE(1X1)PHASE TRANSITION - A STUDY BY RUTHERFORD BACKSCATTERING, NUCLEAR MICROANALYSIS, LEED AND THERMAL-DESORPTION SPECTROSCOPY [J].
NORTON, PR ;
DAVIES, JA ;
CREBER, DK ;
SITTER, CW ;
JACKMAN, TE .
SURFACE SCIENCE, 1981, 108 (02) :205-224
[8]  
RAVAL R, 1989, SURF SCI, V219, pL505
[9]   THE POTENTIAL-ENERGY SURFACE, VIBRATIONAL PHASE RELAXATION AND THE ORDER-DISORDER TRANSITION IN THE ADSORPTION SYSTEM PT(111)-CO [J].
SCHWEIZER, E ;
PERSSON, BNJ ;
TUSHAUS, M ;
HOGE, D ;
BRADSHAW, AM .
SURFACE SCIENCE, 1989, 213 (01) :49-89