EP 1017899 A4 20001115 - TRANSITION-METAL SUBSTITUTED TUNGSTOALUMINATE COMPLEXES FOR DELIGNIFICATION AND WASTE MINERALIZATION
Title (en)
TRANSITION-METAL SUBSTITUTED TUNGSTOALUMINATE COMPLEXES FOR DELIGNIFICATION AND WASTE MINERALIZATION
Title (de)
MIT ÜBERGANGSMETALLEN SUBSTITUIERTE WOLFRAMALUMINAT-KOMPLEXE FÜR DELIGNIFIZIERUNG UND ABFALLMINERALISIERUNG
Title (fr)
COMPLEXES DE TUNGSTOALUMINATE SUBSTITUES PAR DES METAUX DE TRANSITION DESTINES A UNE DELIGNIFICATION ET UNE MINERALISATION DE DECHETS
Publication
Application
Priority
- US 9818462 W 19980904
- US 5800097 P 19970905
- US 14550498 A 19980902
Abstract (en)
[origin: WO9911857A1] A method of delignifying lignocellulosic fibers is disclosed. In one embodiment, the method comprises the steps of combining a polyoxometalate complex with aluminum heteroatom of the formula [Al1VmMonWoNbpTaq(TM)rOs]<x-> where 1 is 1-6, m is 0-18, n is 0-40, o is 0-40, p is 0-10, q is 0-10, r is 0-9, and TM is a d-electron-containing transition metal ion, where l+m+n+o+p+q >/= 4, and s is sufficiently large that x > 0, with a lignocellulosic pulp, wherein the pH of the combination is between 6 and 11 and the consistency of the combination is 1-20 %; and heating the combination in a temperature-controlled and pressure-controlled vessel under conditions of temperature and time wherein the polyoxometalate is reduced and delignification occurs.
IPC 1-7
IPC 8 full level
D21C 9/10 (2006.01)
CPC (source: EP)
D21C 9/1063 (2013.01)
Citation (search report)
- [Y] US 5169495 A 19921208 - LACHENAL DOMINIQUE [FR]
- [YD] US 5549789 A 19960827 - ATALLA RAJAI H [US], et al
- See references of WO 9911857A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9911857 A1 19990311; AU 9221398 A 19990322; BR 9812135 A 20000718; CA 2301719 A1 19990311; EP 1017899 A1 20000712; EP 1017899 A4 20001115; JP 2003514127 A 20030415
DOCDB simple family (application)
US 9818462 W 19980904; AU 9221398 A 19980904; BR 9812135 A 19980904; CA 2301719 A 19980904; EP 98944749 A 19980904; JP 2000508848 A 19980904