RO72243B1 - Metoda de determinare a wolframului din catalizatorii de reformare catalitica - Google Patents
Metoda de determinare a wolframului din catalizatorii de reformare cataliticaInfo
- Publication number
- RO72243B1 RO72243B1 RO91020A RO9102077A RO72243B1 RO 72243 B1 RO72243 B1 RO 72243B1 RO 91020 A RO91020 A RO 91020A RO 9102077 A RO9102077 A RO 9102077A RO 72243 B1 RO72243 B1 RO 72243B1
- Authority
- RO
- Romania
- Prior art keywords
- tungsten
- acid
- sulfuric acid
- catalytic reforming
- chloroform
- Prior art date
Links
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title abstract 5
- 239000003054 catalyst Substances 0.000 title abstract 3
- 238000001833 catalytic reforming Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 6
- 229910052721 tungsten Inorganic materials 0.000 abstract 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 abstract 4
- 239000010937 tungsten Substances 0.000 abstract 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 3
- 229910017604 nitric acid Inorganic materials 0.000 abstract 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract 2
- 235000002906 tartaric acid Nutrition 0.000 abstract 2
- 239000011975 tartaric acid Substances 0.000 abstract 2
- WAKHLWOJMHVUJC-SQFISAMPSA-N (2z)-2-hydroxyimino-1,2-diphenylethanol Chemical compound C=1C=CC=CC=1C(=N/O)/C(O)C1=CC=CC=C1 WAKHLWOJMHVUJC-SQFISAMPSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Metoda de determinare a wolframului din catalizatorii de reformare catalitica (Pt/Al2O3), promotati cu Pb si W, caracterizata prin aceea ca proba de catalizator este adusa în solutie prin dezagregare cu acid fluorhidric, se îndeparteaza excesul de HFcu acid sulfuric, se oxideaza wolframul cu acid azotic, se dizolva platina în amestec de HCl si HNO3(3:1), se completeaza wolframul cu acid tartric, la cald se filtreaza eventualele urme de wolfram nedizolvat, filtrul spalîndu-se cu apa bidistilata, se dizolva reziduul în NaOH si se fotometreaza separat, cu o cota parte din filtrat cu un continut de 5...25 mg W, se mineralizeaza cu acid sulfuric si azotic, neutralizînd cu NaOH, acidulînd apoi cu HCl si extragînd wolframul cu alfa-benzoinoxima î n cloroform, se îndeparteaza cloroformul prin evaporare, se distruge complexul organic cu acid sulfuric...
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO7791020A RO72243A2 (ro) | 1977-07-13 | 1977-07-13 | Metoda de determinare a wolframului din catalizatorii de reformare catalitica |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO7791020A RO72243A2 (ro) | 1977-07-13 | 1977-07-13 | Metoda de determinare a wolframului din catalizatorii de reformare catalitica |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO72243B1 true RO72243B1 (ro) | 1983-01-30 |
| RO72243A2 RO72243A2 (ro) | 1983-02-01 |
Family
ID=20097979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO7791020A RO72243A2 (ro) | 1977-07-13 | 1977-07-13 | Metoda de determinare a wolframului din catalizatorii de reformare catalitica |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO72243A2 (ro) |
-
1977
- 1977-07-13 RO RO7791020A patent/RO72243A2/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO72243A2 (ro) | 1983-02-01 |
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