FR991334A - Perfectionnements aux procédés de récupération du sélénium - Google Patents
Perfectionnements aux procédés de récupération du séléniumInfo
- Publication number
- FR991334A FR991334A FR991334DA FR991334A FR 991334 A FR991334 A FR 991334A FR 991334D A FR991334D A FR 991334DA FR 991334 A FR991334 A FR 991334A
- Authority
- FR
- France
- Prior art keywords
- recovery processes
- selenium recovery
- selenium
- processes
- recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/90—Regeneration or reactivation
- B01J23/94—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the iron group metals or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/28—Regeneration or reactivation
- B01J27/30—Regeneration or reactivation of catalysts comprising compounds of sulfur, selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
- C07C45/34—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
- C07C45/34—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds
- C07C45/35—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB991334X | 1948-08-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR991334A true FR991334A (fr) | 1951-10-04 |
Family
ID=10854965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR991334D Expired FR991334A (fr) | 1948-08-18 | 1949-07-23 | Perfectionnements aux procédés de récupération du sélénium |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE490413A (fr) |
FR (1) | FR991334A (fr) |
NL (1) | NL70603C (fr) |
-
0
- BE BE490413D patent/BE490413A/xx unknown
- NL NL70603D patent/NL70603C/xx active
-
1949
- 1949-07-23 FR FR991334D patent/FR991334A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE490413A (fr) | 1900-01-01 |
NL70603C (fr) | 1900-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR999683A (fr) | Perfectionnements aux servo-mécanismes | |
FR1007140A (fr) | Perfectionnements aux turbo-moteurs | |
FR974905A (fr) | Perfectionnements apportés aux mandrins | |
FR974976A (fr) | Perfectionnements aux chaînes de bicyclettes | |
FR1002754A (fr) | Perfectionnements aux outils tendeurs | |
FR979589A (fr) | Perfectionnements aux skis | |
FR978042A (fr) | Perfectionnements apportés aux parachutes | |
FR979439A (fr) | Perfectionnements aux radiogoniomètres | |
FR937359A (fr) | Perfectionnements aux procédés de construction | |
FR991334A (fr) | Perfectionnements aux procédés de récupération du sélénium | |
FR922857A (fr) | Perfectionnements aux procédés d'autoagglomération | |
FR974246A (fr) | Perfectionnements aux vannes | |
FR966856A (fr) | Perfectionnements apportés aux brouettes | |
FR1011071A (fr) | Perfectionnements aux analyseurs différentiels de télécinéma | |
FR1014028A (fr) | Perfectionnements apportés aux procédés de construction | |
FR1007032A (fr) | Perfectionnements aux procédés de dégravement | |
FR970175A (fr) | Perfectionnements aux turbo-moteurs | |
FR969784A (fr) | Perfectionnements aux transporteurs du type vibratoire | |
FR966440A (fr) | Perfectionnements aux motocyclettes | |
FR1091608A (fr) | Perfectionnements aux dispositifs de formage | |
FR969673A (fr) | Perfectionnements aux compositions antiparasites | |
FR967427A (fr) | Perfectionnements aux bicyclettes | |
FR968701A (fr) | Perfectionnements aux caisses de concentration des eaux-vannes | |
FR982787A (fr) | Perfectionnements aux procédé de construction | |
FR1015585A (fr) | Perfectionnements apportés aux procédés de construction |