GB873090A - Method of conducting gaseous chemical reactions by treatment with electric discharges - Google Patents

Method of conducting gaseous chemical reactions by treatment with electric discharges

Info

Publication number
GB873090A
GB873090A GB11747/58A GB1174758A GB873090A GB 873090 A GB873090 A GB 873090A GB 11747/58 A GB11747/58 A GB 11747/58A GB 1174758 A GB1174758 A GB 1174758A GB 873090 A GB873090 A GB 873090A
Authority
GB
United Kingdom
Prior art keywords
ammonia
oxygen
withdrawn
electrodes
nitrogen
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
GB11747/58A
Inventor
Bernard William Bradford
Martin S Bloom
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB11747/58A priority Critical patent/GB873090A/en
Priority to FR792040A priority patent/FR1231241A/en
Publication of GB873090A publication Critical patent/GB873090A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32082—Radio frequency generated discharge
    • H01J37/32091—Radio frequency generated discharge the radio frequency energy being capacitively coupled to the plasma
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/01—Hydrogen peroxide
    • C01B15/027—Preparation from water
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/98—Other compounds containing sulfur and oxygen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/14—Hydroxylamine; Salts thereof
    • C01B21/1409—Preparation
    • C01B21/1436—Preparation by reaction in the gas phase, e.g. of nitrogen, hydrogen and oxygen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/16—Hydrazine; Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/203—Preparation of nitrogen oxides using a plasma or an electric discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32082—Radio frequency generated discharge
    • H01J37/32174—Circuits specially adapted for controlling the RF discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
    • H01J2237/32—Processing objects by plasma generation
    • H01J2237/33—Processing objects by plasma generation characterised by the type of processing
    • H01J2237/338—Changing chemical properties of treated surfaces
    • 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
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

<PICT:0873090/III/1> Chemical reactions in gases are effected by a high-frequency electric discharge between electrodes 4, 5 on a re-entrant coaxial line resonator 3 and the reaction products are withdrawn through a nozzle in one or both electrodes. The nozzle has a mouth of narrow diameter through which the products are withdrawn at high velocity and rapidly cooled so that no reversion occurs. Both electrodes are cooled and the gases may be withdrawn at sonic or supersonic speed through cylindrical or convergent/divergent nozzles. The gas pressure may be atmospheric or above atmospheric, e.g. up to 50 atmos. The electric discharge or arc may be vertical or horizontal. Suitable gaseous reactions are producing nitric oxide from air, oxygen enriched air, or from oxygen and nitrogen streams, e.g. O2:N2 molar ratio of (60-50):(40-50), containing less than 1% molar of oxides of carbon; hydrazine from nitrogen and hydrogen, ammonia, ammonia and nitrogen or ammonia and hydrogen; hydrogen peroxide from water vapour and oxygen or water vapour alone; sulphur monoxide from sulphur vapour and oxygen; and hydroxylamine from water vapour and ammonia.
GB11747/58A 1958-04-14 1958-04-14 Method of conducting gaseous chemical reactions by treatment with electric discharges Expired GB873090A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB11747/58A GB873090A (en) 1958-04-14 1958-04-14 Method of conducting gaseous chemical reactions by treatment with electric discharges
FR792040A FR1231241A (en) 1958-04-14 1959-04-14 Application of alternating high frequency electric discharges to conduct mineral chemical reactions in gas phase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11747/58A GB873090A (en) 1958-04-14 1958-04-14 Method of conducting gaseous chemical reactions by treatment with electric discharges

Publications (1)

Publication Number Publication Date
GB873090A true GB873090A (en) 1961-07-19

Family

ID=9991962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11747/58A Expired GB873090A (en) 1958-04-14 1958-04-14 Method of conducting gaseous chemical reactions by treatment with electric discharges

Country Status (2)

Country Link
FR (1) FR1231241A (en)
GB (1) GB873090A (en)

Also Published As

Publication number Publication date
FR1231241A (en) 1960-09-27

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