GB661882A - Recovery of selenium used in catalytic oxidation of olefines - Google Patents
Recovery of selenium used in catalytic oxidation of olefinesInfo
- Publication number
- GB661882A GB661882A GB2176248A GB2176248A GB661882A GB 661882 A GB661882 A GB 661882A GB 2176248 A GB2176248 A GB 2176248A GB 2176248 A GB2176248 A GB 2176248A GB 661882 A GB661882 A GB 661882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- selenium
- olefines
- heating
- recovery
- gases
- 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
-
- 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
- C01B19/02—Elemental selenium or tellurium
Abstract
In the oxidation of olefins, especially propylene and isobutylene, with oxygen-containing gases in the presence of elementary selenium and copper-containing contact material, as described in Specifications 625,330, 648,386, and 658,179, to obtain unsaturated aldehydes, the deposit containing selenium and selenium oxide is heated above 240 DEG , preferably at 240-400 DEG C., to recover elementary selenium. The heating may be effected in the presence of a restricted amount of air, which is driven off by the carbon oxides evolved, or in the presence of inert gases such as nitrogen.ALSO:Selenium is recovered from the deposit containing the element and its oxide which is condensed from the products obtained by oxidizing olefines with oxygen-containing gases in the presence of selenium and copper-containing contact material, by heating above 240 DEG C. preferably at 240-400 DEG C. Heating may be affected in the presence of a restricted amount of air or in an inert gas such as nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2176248A GB661882A (en) | 1948-08-18 | 1948-08-18 | Recovery of selenium used in catalytic oxidation of olefines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2176248A GB661882A (en) | 1948-08-18 | 1948-08-18 | Recovery of selenium used in catalytic oxidation of olefines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB661882A true GB661882A (en) | 1951-11-28 |
Family
ID=10168361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2176248A Expired GB661882A (en) | 1948-08-18 | 1948-08-18 | Recovery of selenium used in catalytic oxidation of olefines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB661882A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1175664B (en) * | 1959-09-04 | 1964-08-13 | Asahi Chemical Ind | Process for the recovery of selenium from reaction gases containing this, acrolein and acrylonitrile |
| US4038376A (en) * | 1975-08-12 | 1977-07-26 | Atlantic Richfield Company | Process for the recovery of selenium from urethanes containing selenium or compounds thereof |
| GB2190667A (en) * | 1986-04-18 | 1987-11-25 | Nippon Sheet Glass Co Ltd | Purifying starting materials |
-
1948
- 1948-08-18 GB GB2176248A patent/GB661882A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1175664B (en) * | 1959-09-04 | 1964-08-13 | Asahi Chemical Ind | Process for the recovery of selenium from reaction gases containing this, acrolein and acrylonitrile |
| US4038376A (en) * | 1975-08-12 | 1977-07-26 | Atlantic Richfield Company | Process for the recovery of selenium from urethanes containing selenium or compounds thereof |
| GB2190667A (en) * | 1986-04-18 | 1987-11-25 | Nippon Sheet Glass Co Ltd | Purifying starting materials |
| US4801442A (en) * | 1986-04-18 | 1989-01-31 | Nippon Sheet Glass Co., Ltd. | Method for purifying starting materials for fabricating chalchogenide glass |
| GB2190667B (en) * | 1986-04-18 | 1989-11-29 | Nippon Sheet Glass Co Ltd |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES368416A1 (en) | Process for the purification of olefines | |
| GB973338A (en) | An improved catalytic process for the preparation of methacrylonitrile | |
| GB1044691A (en) | Sulphonation of olefins | |
| GB661882A (en) | Recovery of selenium used in catalytic oxidation of olefines | |
| ES404095A1 (en) | Recovery of ethylene oxide from admixed inert gaseous components | |
| GB937380A (en) | A method for preparing unsaturated aliphatic nitriles | |
| GB1017144A (en) | Improved process for oxidising hydrocarbons | |
| GB397161A (en) | Improvements in or relating to the oxidation of olefines | |
| GB1033436A (en) | Process for the manufacture of unsaturated nitriles | |
| GB1036375A (en) | Manufacture of unsaturated aliphatic carboxylic acids | |
| GB873712A (en) | Production of unsaturated aliphatic aldehydes | |
| GB908655A (en) | Process for the manufacture of unsaturated aldehydes or ketones | |
| GB1033829A (en) | Improvements in or relating to oxidation catalysts | |
| GB609924A (en) | Improvements in or relating to the manufacture of pyrazine | |
| GB1111939A (en) | Improved process for preparing methacrylonitrile and acrylonitrile | |
| GB636800A (en) | Improvements in and relating to the dehydrogenation of secondary alcohols to ketones | |
| GB1491529A (en) | Oxidation catalyst | |
| GB689392A (en) | Oxidation of olefines | |
| GB648386A (en) | Oxidation of olefines | |
| GB960332A (en) | Process for the preparation of oxidation products of propylene | |
| GB706552A (en) | Manufacture of acrolein | |
| ES275172A1 (en) | PROCEDURE FOR THE PREPARATION OF ACROLEIN OR METACROLEIN (Machine-translation by Google Translate, not legally binding) | |
| GB730470A (en) | Improvements in or relating to a process for the recovery of vanadium from carbon-and vanadium-contaminated catalysts | |
| GB713334A (en) | Improvements in or relating to the recovery of selenium and selenium compounds | |
| GB697776A (en) | Process for the preparation of cumene hydroperoxide |