BR9812135A - Tungstoaluminate complexes replaced with transition metal for delignification and dumping mineralization - Google Patents
Tungstoaluminate complexes replaced with transition metal for delignification and dumping mineralizationInfo
- Publication number
- BR9812135A BR9812135A BR9812135-9A BR9812135A BR9812135A BR 9812135 A BR9812135 A BR 9812135A BR 9812135 A BR9812135 A BR 9812135A BR 9812135 A BR9812135 A BR 9812135A
- Authority
- BR
- Brazil
- Prior art keywords
- delignification
- transition metal
- tungstoaluminate
- mineralization
- combination
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
Abstract
"COMPLEXOS DE TUNGSTOALUMINATO SUBSTITUìDOS COM METAL DE TRANSIçãO PARA DESLIGNIFICAçãO E MINERALIZAçãO DE DESPEJO" Trata-se de um processo de deslignificação de fibras lignocelulósicas é mostrado. Em uma realização, o processo compreende as etapas de combinação de um complexo polioxo metalato com heteroátomo alumínio da fórmula [Al~ 1~V~ m~Mo~ n~W~ o~Nb~ p~Ta~ q~(TM) ~ r~O~ s~]^ x-^ onde 1 é 1-6, m é 0-18, n é 0-40, o-e 0-40, p é 0-10, q é 0-10, r é 0-9, e TM é um íon de metal de transição contendo elétron-d, onde 1+m+n+o+p+q <242> 4, e s é suficientemente grande de modo que x > 0, com uma polpa lignocelulósica, onde o pH da combinação está entre 6 e 11 e a consistência da combinação é 1-20%; e aquecimento da combinação em um vaso de temperatura e pressão controladas sob condições de temperatura e tempo onde o polioxo metalato é reduzido e ocorre deslignificação."TUNGSTOALUMINATE COMPLEXES SUBSTITUTED WITH TRANSITION METAL FOR DESIGNIFICATION AND MINERALIZATION OF DUMP" This is a process for the delignification of lignocellulosic fibers. In one embodiment, the process comprises the steps of combining a polyoxy metalate complex with aluminum heteroatom of the formula [Al ~ 1 ~ V ~ m ~ Mo ~ n ~ W ~ o ~ Nb ~ p ~ Ta ~ q ~ (TM) ~ r ~ O ~ s ~] ^ x- ^ where 1 is 1-6, m is 0-18, n is 0-40, oe 0-40, p is 0-10, q is 0-10, r is 0 -9, and TM is a transition metal ion containing d-electron, where 1 + m + n + o + p + q <242> 4, es is large enough that x> 0, with a lignocellulosic pulp, where 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 controlled temperature and pressure vessel under conditions of temperature and time where polyoxo metallate is reduced and delignification occurs.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5800097P | 1997-09-05 | 1997-09-05 | |
| US14550498A | 1998-09-02 | 1998-09-02 | |
| PCT/US1998/018462 WO1999011857A1 (en) | 1997-09-05 | 1998-09-04 | Transition-metal substituted tungstoaluminate complexes for delignification and waste mineralization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9812135A true BR9812135A (en) | 2000-07-18 |
Family
ID=26737121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9812135-9A BR9812135A (en) | 1997-09-05 | 1998-09-04 | Tungstoaluminate complexes replaced with transition metal for delignification and dumping mineralization |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1017899A4 (en) |
| JP (1) | JP2003514127A (en) |
| AU (1) | AU9221398A (en) |
| BR (1) | BR9812135A (en) |
| CA (1) | CA2301719A1 (en) |
| WO (1) | WO1999011857A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2661430B1 (en) * | 1990-04-30 | 1992-07-17 | Atochem | HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS. |
| US5549789A (en) * | 1992-08-28 | 1996-08-27 | The United States Of America As Represented By The Secretary Of Agriculture | Oxidation of lignin and polysaccharides mediated by polyoxometalate treatment of wood pulp |
| US5302248A (en) * | 1992-08-28 | 1994-04-12 | The United States Of America As Represented By The Secretary Of Agriculture | Delignification of wood pulp by vanadium-substituted polyoxometalates |
-
1998
- 1998-09-04 JP JP2000508848A patent/JP2003514127A/en not_active Withdrawn
- 1998-09-04 CA CA002301719A patent/CA2301719A1/en not_active Abandoned
- 1998-09-04 AU AU92213/98A patent/AU9221398A/en not_active Abandoned
- 1998-09-04 WO PCT/US1998/018462 patent/WO1999011857A1/en not_active Application Discontinuation
- 1998-09-04 BR BR9812135-9A patent/BR9812135A/en not_active IP Right Cessation
- 1998-09-04 EP EP98944749A patent/EP1017899A4/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003514127A (en) | 2003-04-15 |
| EP1017899A1 (en) | 2000-07-12 |
| AU9221398A (en) | 1999-03-22 |
| CA2301719A1 (en) | 1999-03-11 |
| EP1017899A4 (en) | 2000-11-15 |
| WO1999011857A1 (en) | 1999-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B08F | Application fees: dismissal - article 86 of industrial property law |
Free format text: REFERENTE A 7A E 8A ANUIDADES. |
|
| B08K | Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87) |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1886 DE 27/02/2007. |