Library

You have 0 saved results.
Mark results and click the "Add To Watchlist" link in order to add them to this list.
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
  • 11B MAS NMR  (1)
  • Industrial Chemistry  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 71 (1999), S. 521-522 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1610-1616 
    ISSN: 0044-2313
    Keywords: Secondary synthesis ; isomorphous substitution ; B-ZSM-5 ; 11B MAS NMR ; X-ray powder diffraction ; n-hexane cracking ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sekundärsynthese und Charakterisierung Bor-haltiger ZSM-5-ZeolitheIn einen templatfrei und in Gegenwart von Templat synthetisierten und einer thermischen oder hydrothermalen Behandlung unterworfenen ZSM-5-Zeolith kann Bor unter den Bedingungen der Sekundärsynthese auf die tetraedrischen Gitterplätze in unterschiedlichem Maße eingebaut werden. Der isomorphe Boreinbau wurde mittels 11B-MAS-NMR-Messungen verifiziert und spiegelt sich in der Kontraktion des Elementarzellenvolumens des Zeolithgitters wider. Vergleichende Untersuchungen der katalytischen Eigenschaften präparierter borhaltiger ZSM-5-Zeolithe in der säurekatalysierten n-Hexanspaltung zeigen, daß die ausgehend vom Templat-Syntheseprodukt erhaltenen Proben eine höhere katalytische Aktivität und eine geringere Desaktivierungsneigung haben.
    Notes: Under conditions of secondary synthesis and to varying extents, boron can be incorporated into the tetrahedral framework sites of a ZSM-5 zeolite which has been synthesized template-free or in the presence of organic template compounds and subjected to calcination or hydrothermal treatment. Isomorphic incorporation of boron is verified by means of 11B MAS NMR measurements and it is reflected in a contraction of the unit cell volume of the zeolite lattice. A comparative study of the catalytic properties of the boron-containing ZSM-5 in acid catalysed n-hexane cracking revealed that samples based on template synthesis product are more active and show less tendency to deactivation.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...