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
  • PACS: 79.20.D; 61.80.B; 61.82.P  (2)
  • 13C‐labelling experiments  (1)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Methanol synthesis pathway over Cu/ZrO2 catalysts: a time‐resolved DRIFT 13C‐labelling experiment (1998)
    Springer
    Catalysis letters 54 (1998), S. 41-48 
    Details
    ISSN: 1572-879X
    Keywords: methanol synthesis ; Cu/ZrO2 ; DRIFT ; 13C‐labelling experiments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract To provide additional evidence on the synthesis path of methanol over Cu/ZrO2 catalysts, a three‐step in situ experiment was performed in a DRIFT cell. 13C‐labelled as well as common 12C paraformaldehyde and formic acid were adsorbed and subsequently hydrogenated under reaction conditions (0.5 MPa and 423 K). It was found that methanol was generated exclusively from the 2‐H2CO intermediate, not from adsorbed surface formate. Furthermore, the intermediacy of CO2- 3 in the reverse/water–gas shift reaction was shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019032022881
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Surface modification and structuring of electrical conducting and isolating polyaniline films (1999)
    Springer
    Applied physics 69 (1999), S. S291 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 79.20.D; 61.80.B; 61.82.P
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Laser ablation of polyaniline in its conducting and isolating form revealed very similar ablation properties upon irradiation at 308 nm. Both types of polymer film can be structured with high resolution at high fluences. The ablation craters have sharp contours and no debris contaminates the surrounding area. At low fluences the creation of cone structures is observed. X-ray photoelectron spectroscopy reveals the carbonization of the surface upon laser ablation. As preferred decomposition sites the imine groups in doped and undoped polyaniline are identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051402
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Imaging-XPS/Raman investigation on the carbonization of polyimide after irradiation at 308 nm (1999)
    Springer
    Applied physics 69 (1999), S. S651 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 79.20.D; 61.80.B; 61.82.P
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. The laser ablation of polyimide was studied using 308 nm laser irradiation ≤225 mJ cm-2. Confocal Raman microscopy revealed the deposition of carbon surrounding the ablation crater, which consists of amorphous carbon with some crystalline features. Inside the crater, graphitic material was detected on top of the cones, very similar to the material from cw-Ar+ ion laser irradiation. FT-Raman measurements reveal the presence of intermediates of the polyimide decomposition. Imaging-X-ray photoelectron spectroscopy confirmed the deposition of carbon material surrounding the ablation crater and showed that the oxygen and nitrogen contents of the remaining material decrease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051497
    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...