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Showing papers on "Partial oxidation published in 1968"


Journal ArticleDOI
TL;DR: Sulfate enriched in 32 S with respect to co-existent sulfur is found in the Orgeuil meteorite as discussed by the authors, which can be effected with at least three laboratory procedures: (1) oxidation of FeS by traces of a strong oxidizing agent such as O 2 or HOOH in a generally reducing aqueous environment, (2) bacterial oxidation of sulfides, or (3) reaction of elemental sulfur with water followed by partial oxidation of the unequilibrated products.

27 citations


Patent
06 Sep 1968
TL;DR: In this article, the authors describe the production of a supported catalanguage containing VANADIUM PENTOXIDE and TITANIUM DIOXIDE for the OXIDATION of AROMATIC HYDROCARBONS to CARBOXYLIC ACIDS or their ANHYDRIDES with OXYGEN.
Abstract: THE PRODUCTION OF A SUPPORTED CATALYST CONTAINING VANADIUM PENTOXIDE AND TITANIUM DIOXIDE FOR THE OXIDATION OF AROMATIC HYDROCARBONS TO CARBOXYLIC ACIDS OR THEIR ANHYDRIDES WITH OXYGEN OR GASES CONTAINING OXYGEN IN A FLUIDIZED BED, BY TREATING AN INERT CARRIER SUBSTANCE WITH A SOLUTION OR SUSPENSION OF A TITANIUM COMPOUND, THEN HEATING IT IN THE PRESENCE OF OXYGEN TO A TEMPERATURE OF 130* TO 1100*C, TREATING THE CARRIER THUS PRETREATED WITH A SOLUTION OR MELT OF A VANADIUM COMPOUND AND HEATING IT IN THE PRESENCE OF OXYGEN AT 350* TO 1100*C

23 citations


Patent
29 May 1968
TL;DR: In this paper, the authors investigated the effect of different levels of soot production and STEAM/FUEL RATIO on CH4 concentration in OXIDATION GAS GENERATOR.
Abstract: PRODUCING SYNTHESIS GAS OR FUEL GAS WHEREIN THE FEEDSTOCK FOR A PARTIAL OXIDATION GAS GENERATOR COMPRISES A MIXTURE OF CARBONIFEROUS FUEL AND FROM ABOUT 1 TO 80 WT. PERCENT OF AN OXYGENATED HYDROCARBONACEOUS ORGANIC MATERIAL WHICH SUPPLIES THE FEEDSTOCK WITH A MINIMUM OF 0.5 WT. PERCENT OF COMBINED OXYGEN, AND THE PRODUCT GAS COMPRISES PRINCIPALLY CO AND H2 TOGETHER WITH MINOR AMOUNTS OF H2O, CO2, CH4, AND UNCONVERTED CARBON. BY REACTING ISOBUTYRALDEHYDE OR MOLASSES WITH HEAVY FUEL OIL OR VACUUM RESIDUUM THE CONCENTRATION OF CH4 IN THE PRODUCT GAS MAY BE INCREASED WHILE THE FREE OXYGEN CONSUMPTION AND THE REACTION TEMPERATURE AT A GIVEN LEVEL OF SOOT PRODUCTION AND STEAM/FUEL RATIO IS DECREASED.

22 citations


Patent
27 Nov 1968
TL;DR: In this paper, the authors describe a process for the production of finably divided carbon, which is performed by AQUEOUS and/or ACID leaching, from concentrated spent pULping LIQUOR in a single high-temperATURE stage.
Abstract: A PROCESS FOR THE PRODUCTION OF FINELY DIVIDED CARBON, ACTIVATABLE BY AQUEOUS AND/OR ACID LEACHING, FROM CONCENTRATED SPENT PULPING LIQUOR IN A SINGLE HIGH TEMPERATURE STAGE WHICH PROCESS COMPRISES PASSING THE SPENT LIQUOR UNDER PRESSURE THROUGH AT LEAST ONE ATOMIZING NOZZLE INTO A REACTOR CHAMBER TO FORM AT LEAST ONE HIGH VELOCITY ATOMIZET SPRAY OF FINELY DIVIDED LIQUID DROPLETS INTIMATELY ADMIXED WITH A FREE OXYGEN CONTAINING GAS IN AN AMOUNT SUFFICIENT TO EFFECT A SELECTED PARTIAL OXIDATION OF THE CARBONACEOUS MATERIAL IN SAID LIQUOR, SAID REACTION CHAMBER BEING MAINTAINED AT A HIGH TEMPERATURE SUFFICIENT TO EFFECT SAID SELECTED PARTIAL OXIDATION, EACH ATOMIZED SPRAY BEING PASSED IN SAID CHAMBER THROUGH AN OPEN-ENDED TUBE SUBSTANTIALLY COAXIAL WITH SAID SPRAY AND SPACED FROM BUT ADJACENT TO EACH SPRAY NOZZLE TO CAUSE RECIRCULATION, BY INDUCTION OF A PORTION OF THE HOT GASEOUS PRODUCTS OF SAID PARTIAL OXIDATION TO SAID SPRAY ADJACENT SAID NOZZLE WHEREBY TO MAINTAIN THE REACTION TEMPERATURE OF SAID PARTIAL OXIDATION OF THE CARBONACEOUS MATERIAL IN SAID LIQUOR.

9 citations



Patent
20 Nov 1968
TL;DR: In this article, NAPHTACHIMIE et al. presented a method to produce ethylene oxide by direct partial oxidation of a gaseous mixture of ethylene and oxygen at a temperature in the range 150-400 C.
Abstract: 1,134,318. Ethylene oxide. NAPHTACHIMIE. 21 Aug., 1967 [29 Aug., 1966], No. 38371/67. Heading C2C. Ethylene oxide is prepared by direct partial oxidation of ethylene by passing a gaseous mixture of ethylene and oxygen or a mixture of gases containing ethylene and oxygen at a temperature in the range 150-400‹ C. through a catalytic layer of silver-containing catalysts, the temperature of which increases in the direction in which the gaseous reaction mixture circulates. If desired the catalyst may be divided into two portions maintained at different temperatures increasing in the direction in which the gaseous reaction mixture circulates. The difference in temperature between the two portions of the catalyst is preferably from 5‹ to 50‹ C.

3 citations


Patent
24 Jan 1968
TL;DR: In this article, the authors describe a process for carrying out partial oXIDATION of ORGANIC COMPOUNDS in the VAPOR PHASE by CIRCULATING CATalytic GRANULAR SOLIDS.
Abstract: IN THE DIRECTION OF MOVEMENT OF THE BED. THE STREAMS AND CONTACT BED ARE FLOWED CO-CURRENTLY THROUGH THE REACTION ZONE AND THE REACTED MIXTURED IS SEPARATED FROM THE BED AFTER PASSAGE THROUGH AT LEAST A PART OF THE LENGTH OF ONE OF THE PATHS. A PROCESS FOR CARRYING OUT PARTIAL OXIDATION OF ORGANIC COMPOUNDS IN THE VAPOR PHASE BY CIRCULATING CATALYTIC GRANULAR SOLIDS CONTINUOUSLY THROUGH A SYSTEM WHICH INCLUDES VERTICALLY ELONGATED UP-CLOW AND DOWN-FLOW PATHS, ONE OF WHICH PASSES THROUGH AN ELONGATED REACTION ZONE. THE SOLIDS MOVE AS A COMPACT BED, AT LEAST THROUGH THE REACTION ZONE, AND SEPARATE GASEOUS STREAMS CONTAINING RESPECTIVELY AN ORGANIC COMPOUND TO BE OXIDIZED AND OXYGEN ARE CONTINUOUSLY ADMITTED DIRECTLY INTO THE MOVING CONTACT BED WITHIN THE REACTION ZONE AT POINTS SPACED APART

2 citations


Patent
04 Dec 1968
TL;DR: In this article, the authors describe the production of ammonium nitrite by reacting nitric oxides with ammonium carbonate solution, at a pressure of 2 to 7 atmos.
Abstract: 1,135,712. Production of ammonium nitrite. GOSUDARSTVENNY NAUCHNO ISSLEDOVATELSKY I PROEKTNY INSTITUT AZOTNOI PROMYSHLENNOSTI I PRODUKTOV ORGANICHESKOGO SINTEZA. 6 Feb., 1967, No. 5571/67. Heading C1A. Ammonium nitrite is prepared by reacting nitric oxides with ammonium carbonate solution, at a pressure of 2 to 7 atmos. Nitrous gases obtained by the catalytic oxidation of ammonia under a pressure of 2 to 7 atmos. pass respectively through a cooler, a scrubbing tower (where the extent of oxidation of the nitrous gases is adjusted by the partial removal of nitrogen dioxide by dil. nitric acid circulating the tower), a brine cooler (where water and acid vapours present in the nitrous gases condense) and finally to an absorption column where partial oxidation occurs and the oxidized gases react with ammonium carbonate solution, in countercurrent under a pressure of 2 to 7 atmos.

1 citations


Journal ArticleDOI
TL;DR: In this article, the periodate oxidation of 4,4,6,6-tetramethylcyclohexane-1,2,3-triol in neutral or acidic aqueous solution did not give the expected 2,2.4, 4, 4.6-dial, but exo-7-hydroxy-2, 2.4-4,4.
Abstract: The periodate oxidation of 4,4,6,6-tetramethylcyclohexane-1,2,3-triol in neutral or acidic aqueous solution did not give the expected 2,2,4,4-tetramethylpentane-1,5-dial, but exo-7-hydroxy-2,2,4,4-tetramethyl-6,8-dioxabicyclo[3,2,1]octane, produced by a partial oxidation to the hydroxy-dialdehyde, followed by closure of two intramolecular acetal linkages to give the observed product.

1 citations