ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
Filter
  • XPS  (1)
  • surface characterization  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Methanol selectivity of silica-supported PtFe (1990)
    Springer
    Catalysis letters 4 (1990), S. 93-99 
    Details
    ISSN: 1572-879X
    Keywords: Methanol synthesis ; PtFe alloy catalysts ; Mössbauer spectroscopy ; XPS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Adding Fe to Pt/SiO2 catalysts improves activity for methanol synthesis from 3H2/CO at 523 K and 3.19 MPa. Over 90% methanol selectivity can be achieved at low conversion, depending on the metal composition and dispersion.In situ Mössbauer measurements after reduction in hydrogen at 673 K and during steady-state reaction show the presence of PtFe alloy and Fe3+ phases only. The amount of PtFe alloy increases as catalysts activate to produce methanol with higher activity and selectivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00764875
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Dual-wavelength radiation thermometry: Emissivity compensation algorithms (1990)
    Springer
    International journal of thermophysics 11 (1990), S. 269-281 
    Details
    ISSN: 1572-9567
    Keywords: dual-wavelength radiation thermometry ; emissivity ; pyrometry ; radiation thermometry ; radiometry ; surface characterization ; temperature ; measurement ; x-ray photoelectron spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The traditional contact methods of temperature measurement for metal processing applications provide accuracies of ±10 K. Noncontact methods based upon emissivity compensation techniques have the potential for improved accuracy with greater ease of use but require prior knowledge of the target emissivity behavior. The features of the basie spectral and ratio methods and five dualwavelength methods are reviewed. Experiments were conducted on a series of aluminum alloys with different surface treatments characterized by x-ray photoelectron spectroscopy in the temperature range 600 to 750 K. Compensation algorithms that account for surface characteristics are required to achieve improved accuracy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00503877
    Location Call Number Expected 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...