Narzędzia help

Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
first last
cannonical link button

http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-article-BUJ1-0021-0068

Czasopismo

Polish Journal of Chemistry

Tytuł artykułu

Catalytic Ketonisation over Oxide Catalysts. Part VII. Ketonisation and Cross-Ketonisation of Aliphatic Esters over CeO2 and ZrO2 Supported on Alumina

Autorzy Gliński, M. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
Abstrakty
EN Catalysts of general formula xwt% MO2/Al2O3, where x = 10, 20 or 30 and M = Ce or Zr have been studied in the ketonisation and cross-ketonisation of aliphatic esters under flow conditions between 548-723 K. Ketonisation of ethyl pentanoate, heptanoate and nonanoate has led to nonan-5-one, tridecan-7-one and heptadecan-9-one, respectively. The conversion of esters increased with temperature and at 698 K a quantitative conversion was observed, irrespective of the type of ester used. A maximum yield of ketone (46% for nonan-5-one, 60% for tridecan-7-one and 50% for heptadecan-9-one) was observed at 673 K. As a result of the cross-ketonisation of a mixture of ethyl pentanoate and ethyl nonanoate (3:1 molar ratio), three ketones were formed: nonan-5- one, tridecan-5-one and heptadecan-9-one. At 698 K, maximum yields of ketones were noted (37, 46 and 8%, respectively) together with a 90% conversion of esters. The catalysts were characterized by XRD, TPR and surface area measurements.
Słowa kluczowe
EN cerium and zirconium catalysts   synthesis of aliphatic ketones   ketonisation of esters  
Wydawca Polskie Towarzystwo Chemiczne
Czasopismo Polish Journal of Chemistry
Rocznik 2003
Tom Vol. 77 / nr 8
Strony 1033--1038
Opis fizyczny
Twórcy
autor Gliński, M.
  • 1Faculty of Chemistry, Warsaw University of Technology (Politechnika), Laboratory of Catalytic Synthesis, Noakowskiego 3, 00-664 Warsaw, Poland
Bibliografia
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-article-BUJ1-0021-0068
Identyfikatory