RS50190B - Synthesis of a stable, aqueous, colloidal-dispersion of alumina by peptization - Google Patents
Synthesis of a stable, aqueous, colloidal-dispersion of alumina by peptizationInfo
- Publication number
- RS50190B RS50190B YUP-590/03A YUP59003A RS50190B RS 50190 B RS50190 B RS 50190B YU P59003 A YUP59003 A YU P59003A RS 50190 B RS50190 B RS 50190B
- Authority
- RS
- Serbia
- Prior art keywords
- alumina
- aluminum
- aluminum hydroxide
- solution
- peptization
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Colloid Chemistry (AREA)
Abstract
Postupak sinteze stabilne vodene koloidne disperzije (sola) aluminijumoksidase sastoji u korišćenju aluminijumhidroksida, naznačen time, što se u rastvor amonijumhidroksida, koncentracije 3 mol/L, dokapava uz intezivno mešanje zagrejani ( 80° C) vodeni rastvor aluminijumhlorida (ili aluminijumnitrata ili aluminijusulfata), koncentracije od 0,5 do 1 mol/L, do pH vrednosti od 6 do 10, zatim se istaloženi aluminijumhidroksid filtriranjem odvoji od rastvora i ispira sa zagrejanom (80° - 90° C) destilovanom vodom do negativne reakcije na hloridne (ili nitratne ili sulfatne) jone, nakon čega se vrši peptizacija taloga aluminijumhidroksida pomoću azotne kiseline pri molskom odnosu alummijumhidroksid/azotna kiselina od 10 do 30, pri temperaturi od 100° do 180 C u balonu sa refluksom ili autoklavu u trajanju od 4 do 50 časova u cilju dobijanja stabilne vodene koloidne disperzije (sola) aluminijumoksida različitog oblika i veličina čestica čvrste faze.A process for the synthesis of a stable aqueous colloidal dispersion (salt) of alumina consists in the use of aluminum hydroxide, which is added to a stirred (80 ° C) aqueous aluminum (alumina) solution or aluminum chloride or alumina solution with intense stirring. concentrations of 0.5 to 1 mol / L, to a pH of 6 to 10, then the precipitated aluminum hydroxide is filtered off from the solution and washed with warmed (80 ° - 90 ° C) distilled water to negatively react with chloride (or nitrate or sulfate) ions, followed by peptization of the aluminum hydroxide precipitate by nitric acid at an aluminum hydroxide / nitric acid molar ratio of 10 to 30, at a temperature of 100 ° to 180 C in a reflux balloon or autoclave for 4 to 50 hours in order to obtain stable aqueous colloidal dispersions (sols) of aluminum oxide of different shape and particle size of solid phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| YUP-590/03A RS50190B (en) | 2003-07-24 | 2003-07-24 | Synthesis of a stable, aqueous, colloidal-dispersion of alumina by peptization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| YUP-590/03A RS50190B (en) | 2003-07-24 | 2003-07-24 | Synthesis of a stable, aqueous, colloidal-dispersion of alumina by peptization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| YU59003A YU59003A (en) | 2006-03-03 |
| RS50190B true RS50190B (en) | 2009-05-06 |
Family
ID=37616665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| YUP-590/03A RS50190B (en) | 2003-07-24 | 2003-07-24 | Synthesis of a stable, aqueous, colloidal-dispersion of alumina by peptization |
Country Status (1)
| Country | Link |
|---|---|
| RS (1) | RS50190B (en) |
-
2003
- 2003-07-24 RS YUP-590/03A patent/RS50190B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| YU59003A (en) | 2006-03-03 |
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