ETHYLENE HYDROGENATION AND ETHANE HYDROGENOLYSIS ON A Rh FOIL WITH TITANIA OVERLAYERS

被引：23

作者：

Williams, K. J. ^{[2
]}

Levin, M. E. ^{[2
]}

Salmeron, M. ^{[1
]}

Bell, A. T. ^{[2
]}

Somorjai, G. A. ^{[3
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Adv Mat, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

CATALYSIS LETTERS | 1988年 / 1卷 / 10期

关键词：

D O I：

10.1007/BF00774876

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effects of submonolayer deposits of titania on the hydrogenation of ethylene and the hydrogenolysis of ethane on a Rh foil have been investigated. Titania has been found to suppress the activity of Rh for both reactions, and the rate of each reaction is proportional to the exposed Rh area. Titania induces no change in the activation energy of either reaction. Furthermore, high temperature reduction in H-2 does not change the activation energy for ethane hydrogenolysis on a titania-covered Rh foil. It appears that the titania overlayer has no effect on the activation of H-2, ethylene, or ethane, and that the suppression of activity for these reactions is purely the result of titania blocking active sites.

引用

页码：331 / 338

页数：8

共 24 条

[1] BENT BE, 1986, THESIS U CALIFORNIA
[2] STRONG METAL-SUPPORT INTERACTIONS IN NICKEL/TITANIA CATALYSTS - THE IMPORTANCE OF INTERFACIAL PHENOMENA
BURCH, R
FLAMBARD, AR
[J]. JOURNAL OF CATALYSIS, 1982, 78 (02) : 389 - 405
[3] SUPPORT EFFECTS IN NICKEL-CATALYSTS
BURCH, R
FLAMBARD, AR
[J]. JOURNAL OF CATALYSIS, 1984, 85 (01) : 16 - 24
[4] CATALYSIS OVER SUPPORTED METALS .V. EFFECT OF CRYSTALLITE SIZE ON CATALYTIC ACTIVITY OF NICKEL
CARTER, JL
CUSUMANO, JA
SINFELT, JH
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1966, 70 (07) : 2257 - &
[5] MECHANISM OF STRONG METAL SUPPORT INTERACTION IN NI/TIO2
CHUNG, YW
XIONG, GX
KAO, CC
[J]. JOURNAL OF CATALYSIS, 1984, 85 (01) : 237 - 243
[6] EFFECT OF TITANIA ON THE CHEMISORPTION AND REACTION PROPERTIES OF PT
DEMMIN, RA
KO, CS
GORTE, RJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1985, 89 (07) : 1151 - 1154
[7] Haller G. L., ADV CATAL IN PRESS
[8] THE DEUTERATION AND EXCHANGE OF ETHYLENE ON EVAPORATED METAL CATALYSTS AT LOW TEMPERATURES
KEMBALL, C
[J]. JOURNAL OF THE CHEMICAL SOCIETY, 1956, (MAR): : 735 - 743
[9] ETHANE HYDROGENOLYSIS STUDIES OF TIO2-SUPPORTED GROUP VIII METAL-CATALYSTS
KO, EI
GARTEN, RL
[J]. JOURNAL OF CATALYSIS, 1981, 68 (01) : 233 - 236
[10] THE INFLUENCE TO TIO DEPOSITS ON A POLYCRYSTALLINE RH FOIL ON CO ADSORPTION AND DESORPTION
LEVIN, M
SALMERON, M
BELL, AT
SOMORJAI, GA
[J]. SURFACE SCIENCE, 1986, 169 (01) : 123 - 137

← 1 2 3 →