Menetelmä selluloosan katalyyttiseksi hapettamiseksi sekä menetelmä selluloosatuotteen valmistamiseksi

Timo Pääkkönen (Inventor), Raili Pönni (Inventor), Markus Nuopponen (Inventor), Tapani Vuorinen (Inventor)

Research output: Patent

Abstract

A method for catalytic oxidation of cellulose using a heterocyclic nitroxyl radical as catalyst and main oxidant acting as oxygen source comprises, before the catalytic oxidation of the cellulose, pretreatment of the cellulose
- in an alkaline pretreatment step, where the cellulose is treated in alkaline solution having hydroxide concentration of above 0.3 M, and
- in a washing step, where the cellulose treated in the alkaline solution is washed to lower the pH.
Original languageEnglish
Patent numberFI127246B
IPCC08B 15/04
Filing date02/09/2013
Publication statusPublished - 3 Mar 2015
MoE publication typeH1 Granted patent

Keywords

  • alkali treatment
  • TEMPO-mediated oxidation
  • cellulose

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