Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Reactant induced restructuring and corrosion of germanium-palladium catalysts during hydrogenation reactions (1994)
    Springer
    Catalysis letters 26 (1994), S. 61-70 
    Details
    ISSN: 1572-879X
    Keywords: restructuring (corrosion) of bimetallic catalysts ; germanium-palladium catalysts ; hydrogenation of nitrobenzene and crotonaldehyde ; catalyst potential
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract An anomalous rate enhancement with increasing conversion has been observed during the liquid phase hydrogenation of nitrobenzene and crotonaldehyde over Ge/Pd/C catalysts at ambient temperature and atmospheric pressure. Inductive coupled plasma atomic emission spectroscopy and electrochemical measurement of the oxidation state of catalysts during reaction revealed that the bimetallic particles were partially oxidized by the reactants, which resulted in Ge-dissolution and increased exposure of Pd on the surface. It is proposed that the surface and bulk composition of Ge/Pd catalysts are a function of their oxidation state. This behaviour is due to the unusually high mobility of Ge in the Pd lattice and to the good solubility of GeO2 in polar solvents. The influence of hydrogen transport on the corrosion process and the stability of other X/Pd type bimetallic catalysts during liquid phase hydrogenation are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00824032
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Catalyst potential measurement: a valuable tool for understanding and controlling liquid phase redox reactions (1999)
    Springer
    Topics in catalysis 8 (1999), S. 115-124 
    Details
    ISSN: 1572-9028
    Keywords: catalyst potential ; hydrogenation ; alcohol oxidation ; supported metal catalysts ; oxidation state
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The experimental technique and possible applications of the steady state catalyst potential measurement during Pt metal catalyzed hydrogenation and oxidation reactions in slurry reactors has been reviewed. The value of this in situ method is illustrated by many examples, including the separation of consecutive reaction steps, determination of the oxidation state of platinum metal catalyst and promoter during reaction, elucidation of the role of surface impurities, and controlling the rate of alcohol oxidation by optimizing the surface concentration of the oxidizing species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019132304828
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...