GB970854A - Oxidation of selenium - Google Patents

Oxidation of selenium

Info

Publication number
GB970854A
GB970854A GB4786563A GB4786563A GB970854A GB 970854 A GB970854 A GB 970854A GB 4786563 A GB4786563 A GB 4786563A GB 4786563 A GB4786563 A GB 4786563A GB 970854 A GB970854 A GB 970854A
Authority
GB
United Kingdom
Prior art keywords
selenium
passed
dioxide
nitrogen dioxide
oxidation
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
Application number
GB4786563A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB970854A publication Critical patent/GB970854A/en
Expired legal-status Critical Current

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
    • 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
    • C01B19/004—Oxides; Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
    • 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
    • C07C45/28—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation of CHx-moieties
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/657—Unsaturated compounds containing a keto groups being part of a ring containing six-membered aromatic rings
    • C07C49/665—Unsaturated compounds containing a keto groups being part of a ring containing six-membered aromatic rings a keto group being part of a condensed ring system
    • C07C49/675—Unsaturated compounds containing a keto groups being part of a ring containing six-membered aromatic rings a keto group being part of a condensed ring system having three rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids
    • C07C51/275—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids of hydrocarbyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/316—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with oxides of nitrogen or nitrogen-containing mineral acids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Selenium is dissolved in an organic solvent and nitrogen dioxide is passed thereinto whilst maintaining the temperature above 100 DEG C., to precipitate selenium dioxide, nitric oxide being formed at the same time. Specified solvents are halogenated hydrocarbons having 1-6 chlorine atoms, e.g. chlorobenzene, homologues of the latter, chlorinated diphenyls and nitrobenzene. Undissolved selenium may be present initially, and dissolve as selenium already in solution is removed by oxidation; alternatively, additional selenium may be added as the oxidation proceeds. Temperatures up to and exceeding 200 DEG C. may be used; in the example, nitrogen dioxide is passed into a flask containing selenium in trichlorobenzene at 185 DEG C. at a point just above a down-draught propeller. Nitric oxide formed in the reaction may be dried, mixed with oxygen or air, passed through silica gel to regenerate nitrogen dioxide and recycled to the process. Selenium dioxide may be separated by centrifuging or filtering the mixture and washed with selenium-free solvent followed by benzene or naphtha.
GB4786563A 1960-01-25 1961-01-23 Oxidation of selenium Expired GB970854A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US421160A 1960-01-25 1960-01-25
US536060A 1960-01-29 1960-01-29
US753360A 1960-02-09 1960-02-09
US1504960A 1960-03-15 1960-03-15
US1946060A 1960-04-04 1960-04-04

Publications (1)

Publication Number Publication Date
GB970854A true GB970854A (en) 1964-09-23

Family

ID=27533048

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4786563A Expired GB970854A (en) 1960-01-25 1961-01-23 Oxidation of selenium
GB253661A Expired GB956382A (en) 1960-01-25 1961-01-23 Oxidation of organic compounds

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB253661A Expired GB956382A (en) 1960-01-25 1961-01-23 Oxidation of organic compounds

Country Status (4)

Country Link
CH (2) CH467737A (en)
DE (1) DE1300544B (en)
GB (2) GB970854A (en)
NL (1) NL6900829A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115819200B (en) * 2022-11-28 2023-08-29 辽宁科技学院 Synthesis method of acenaphthoquinone

Also Published As

Publication number Publication date
DE1300544B (en) 1969-08-07
CH434229A (en) 1967-04-30
CH467737A (en) 1969-01-31
NL6900829A (en) 1969-04-25
GB956382A (en) 1964-04-29

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