Catalytic Ketonization over Oxide Catalysts, Part IV. Cycloketonization of Diethyl Hexanodiate
Marek Gliński , Michał Kaszubski
AbstractActivity of 20 wt.\% MO2/S catalysts, where M = Mn, Ce and Th, and S = Al2O3 or SiO2, has been studied in cycloketonization of diethyl hexanodiate at the temperature range 573-698 K in a flow system. Only moderate yields of cyclopentanone (\\textless\35\%) were achieved. The highest yields of ketone were obtained over MnO2/Al2O3 and MnO2/SiO2 catalysts - 33 and 27\%, respectively. ThO2 containing catalysts were the most active, whereby ester transformations were detected below 573 K. In the presence of all catalysts the formation of the main product was accompanied by various amounts of 2-ethylcyclopentanone, cyclopent-2-en-1-one, cyclopentene, 2-cyclopentylidenecyclopentanone and numerous unidentified by-products.
|Journal series||Reaction Kinetics and Catalysis Letters, ISSN 0133-1736, 1588-2837|
|Keywords in English||cyclopentanone, diethyl adipate, Industrial Chemistry/Chemical Engineering, ketonization of esters, manganese and cerium oxide catalysts, Physical Chemistry|
|Publication indicators||= 17|
|Citation count*||13 (2015-02-24)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.