NDLI: Promotion through gas phase induced surface segregation: methanol synthesis from CO, CO2 and H2 over Ni/Cu(100)

Content Provider	Springer Nature Link
Author	Nerlov, Jesper Chorkendorff, Ib
Copyright Year	1998
Abstract	We have studied the rate of methanol formation over Cu(100) and Ni/Cu(100) from various mixtures of CO, CO2 and H2. It is found that the presence of submonolayer quantities of Ni leads to a strong increase in the rate of methanol formation from mixtures containing all three components whereas Ni does not influence the rate from mixtures of CO2/H2 and CO/H2, respectively. The influence of the partial pressures of CO and CO2 on the rate indicates that the role of CO is strictly promoting. From temperature-programmed desorption spectra it follows that the surface concentration of Ni depends strongly on the partial pressure of CO. In this way the increase in reactivity is interpreted as a CO-induced structural promotion introduced by the stronger bonding of CO to Ni as compared to Cu. It is suggested that this type of promotional behavior will be of general importance in existent catalysts and perhaps even more relevant in the development of new or improved bimetallic catalysts.
Starting Page	171
Ending Page	176
Page Count	6
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	54
Issue Number	4
e-ISSN	1572879X
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	1998-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Catalysis Pharmacy
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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