Showing papers by "Mobil published in 1968"
TL;DR: The crystal chemistry of rare earth faujasites, synthetic and natural, has been investigated by structural studies based on single crystal and powder X-ray data as discussed by the authors, where all rare earth ions in freshly exchanged natural faujastie are contained within the 13 A diameter large cavity, with partial occupancy of the site located in the center of the 12 tetrahedra ring.
122 citations
TL;DR: Lipid extracted from the anaerobic, sulfate-reducing bacterium, Desulfovibrio desulfuricans, constitutes 5–9% of the cellular weight and the effect is expected to increase with depth of sediments as the pattern of prior plant and animal synthesis is gradually displaced or superimposed by bacterial synthesis.
103 citations
01 Oct 1968
TL;DR: In this article, the effects of aqueous sodium aluminosilicate gels to zeolite were studied by means of sorption, and the effect of changing caustic concentration could be interpreted in terms of mass transfer of some dissolved species from the bulk of the gel medium to the surface of the crystal.
Abstract: Conversion of aqueous sodium aluminosilicate gels to zeolite. A was measured by means of sorption. Effects of SiO 2 Al 2 O 2 in the starting gel, caustic concentration, and stirring rate were studied. At excess silica, the gels were found to be unsuitable for kinetics studies because they tended to produce an amorphous by-product and addition to zeolite A. At excess alumina, the effect of changing caustic concentration could be interpreted in terms of mass transfer of some dissolved species from the bulk of the gel medium to the surface of the crystal. From the consideration of the effect of stoichiometry on growth rate, the diffusing species apears to contain two negative distribution of crystals showed a predominance of small particles. All observations are consistent with a diffusion mechanism of crystal growth.
102 citations
Patent•
16 Sep 1968TL;DR: Walkaline EARTH METAL SALTS of CONDENSATION PRODUCTS PREPARED from a HYDROXY AROMATIC COMPOUND, an ALDEHYDE and an AMINE PRODUCES IMPROVED HIGH TEMPERATURE DETERGENT PROPERTIES for INDUSTIRAL FLUIDS as mentioned in this paper.
Abstract: ALKALINE EARTH METAL SALTS OF CONDENSATION PRODUCTS PREPARED FROM A HYDROXY AROMATIC COMPOUND, AN ALDEHYDE AND AN AMINE PRODUCES IMPROVED HIGH TEMPERATURE DETERGENT PROPERTIES FOR INDUSTIRAL FLUIDS.
95 citations
Patent•
27 Jun 1968TL;DR: In this paper, a method for the production of subaqueous deposits of fluid minerals through a subsea satellite system is described, where the wells are drilled in a circular pattern through a template on the marine bottom serving also as base upon which the satellite body is installed.
Abstract: This specification discloses a method for the production of subaqueous deposits of fluid minerals through a subsea satellite system. The wells are drilled in a circular pattern through a template on the marine bottom serving also as base upon which the satellite body is installed. The production and control passages of each of the wells are connected to production equipment within the satellite body by separate connector units, independently lowered into place from a surface vessel, to form portions of fluid paths between the passages within the subsea wellheads and the production equipment within the shell of the satellite. Such an installation permits production through the satellite, installed on the template base, after only one of the wells has been drilled and completed.
86 citations
Patent•
08 Jan 1968TL;DR: In this paper, a single-phase solution is injected into the formation from suitable well means, consisting of an oil and water miscible organic liquid and a surfactant constituent, either a cationic surfactants of the quaternary amine type, a nonionic surfacters of the water-soluble type, or a mixture of both types of surfact agents.
Abstract: A method is described for recovering oil from an oil- bearing subterranean formation which contains fresh-water swelling clay materials and an oil which forms water-in-oil emulsions in the presence of steam. A single-phase solution is injected into the formation from suitable well means. This solution consists of an oil and water miscible organic liquid and a surfactant constituent, either a cationic surfactant of the quaternary amine type, a nonionic surfactant of the water-soluble type, or preferably a mixture of both types of surfactants. Steam is injected into the formation which received the solution until the formation is sufficiently heated to reduce the viscosity of the in place oil. Thereafter, the heat-thinned oil is recovered. Specific examples of many usable organic liquids and surfactants are given. (14 claims)
83 citations
Patent•
03 Jun 1968TL;DR: In this paper, an additive additive additive amount of a product made by reacting an O,O-DDIORGANO-S-(-2-HYDROXALKYL) PHOSPHORODITHIOATE with a THIONYL HALIDE, SULFURYL HALide, ORGANO SulFONYL HALIDE OR A SUL FATE ESTER was added to the output of a generator.
Abstract: LUBRICATING OILS AND FUELS ARE INHIBITED AGAINST OXIDATION BY ADDING TO THEM AN ANTIOXIDANT AMOUNT OF A PRODUCT MADE BY REACTING AN O,O-DDIORGANO-S-(-2-HYDROXALKYL) PHOSPHORODITHIOATE WITH A THIONYL HALIDE, SULFURYL HALIDE, ORGANO SULFONYL HALIDE OR A SULFATE ESTER.
67 citations
63 citations
TL;DR: In this paper, it was shown that the rate-controlling step in the replacement of Na+ by the La3+ ions in the small cages is the stripping of water from the rare earth ions in large cages.
60 citations
TL;DR: A method of combining thin-layer chromatography with activation analysis to measure quantitatively the individual impurities in tricresyl phosphate (TCP) is described in this paper.
Abstract: A method of combining thin-layer chromatography with activation analysis to measure quantitatively the individual impurities in tricresyl phosphate (TCP) is described. The relative amounts and types of impurities found in commercial grades of TCP are discussed. Preparative thin-layer chromatography and iron powder chromatography are applied to produce TCP samples with known concentrations of several impurities. The use of the four-ball wear tester as a method of determining trends in wear values as a function of base stock and additive quality is demonstrated. The relationship of acid phosphate rather than TCP concentration to antiwear properties of compounded lubricants is suggested by transition load studies. Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference held in Chicago, Illinois, October 17–19, 1967.
55 citations
TL;DR: A detailed survey of shear thickening phenomena can be found in this paper, where the results are interpreted in the light of mechanisms advanced to explain gradient and time dependent shear thickenings.
Abstract: Bizarre rheological properties of shear thickening complexes of poly(vinyl) alcohol and sodium borate have been investigated in Couette flow experiments. At least three distinct types of shear rate induced rheological transitions have been discovered. The type of shear thickening which results when a threshold shear rate is exceeded is reversible, and the threshold shear rate depends upon the composition. Typical rheological behaviorbelow andabove the threshold shear rate are as follows: Type I: shear thinning-shear thickening, Type II: shear thickening-erratic, Type III: Newtonian (low viscosity)-Newtonian (high viscosity). Normal stress effects and time dependent shear thickening have also been observed. The results are interpreted in the light of mechanisms advanced to explain gradient and time dependent shear thickening phenomena. Included is a concise literature survey of shear thickening phenomena.
TL;DR: In this paper, the authors investigated the thermal transformations of NH 4 Y using thermogravimetric, temperature-programmed desorption, infrared, and pulsed NMR techniques.
Patent•
11 Sep 1968TL;DR: In this article, a thermoplastic tray characterized by having a series of valleys and ridges arranged on the surface thereof in a herringbone-type pattern is described. But the depth and width of the valleys and ridge, the longitudinal extent thereof, and the angular relationship of rib segments are substantially uniform and selected to achieve maximum tray rigidity in the longitudinal, transverse and diagonal directions of the tray structure.
Abstract: A thermoplastic tray characterized by having a series of valleys and ridges arranged on the surface thereof in a herringbone-type pattern. The depth and width of the valleys and ridges, the longitudinal extent thereof, and the angular relationship of rib segments are substantially uniform and selected to achieve maximum tray rigidity in the longitudinal, transverse and diagonal directions of the tray structure.
Patent•
27 Jun 1968TL;DR: In this paper, a method and apparatus for the production of subaqueous deposits of fluid minerals through a subsea satellite system is described, where the wells are drilled in a circular pattern through a template on the marine bottom serving also as base upon which the satellite body is installed.
Abstract: This specification discloses a method and apparatus for the production of subaqueous deposits of fluid minerals through a subsea satellite system. The wells are drilled in a circular pattern through a template on the marine bottom serving also as base upon which the satellite body is installed. The production and control passages of each of the wells are connected to production equipment within the satellite body by separate connector units, independently lowered into place from a surface vessel, to form portions of fluid paths between the passages within the subsea wellheads and the production equipment within the shell of the satellite. Such an installation permits production through the satellite, installed on the template base, after only one of the wells has been drilled and completed. The produced fluids are separated and/or metered within the satellite prior to being transported to storage. Flowline tools are programmed to enter the various subaqueous wells through the connector units. Hydraulic circuitry and controls are provided for pumping the tools and chemicals down through the various wells and for retrieving the tools. Also disclosed is a hot water well utilized in conjunction with the heat exchanger within the satellite for warming the separated-off gases to prevent the formation of hydrates.
Patent•
01 Apr 1968TL;DR: In this article, a new zeolite is described as a hybrid of a mixture of SILICA, ALUMINA, WATER, SODIUM OXIDE, POTASSIUM ORXIDE and TETRAMETHYLAMMONIUM IONS.
Abstract: AS A NEW ZEOLITE, A CRYSTALLINE ALUMINOSILICATE HAVING A DEFINATE REPETITIVE CRYSTALLINE STRUCTURE SIMILAR TO OFFRETITE AND CONTAINING TETRAMETHYLAMMONIUM IONS. IT IS PREPARED FROM A MIXTURE OF SILICA, ALUMINA, WATER, SODIUM OXIDE, POTASSIUM OXIDE, AND TETRAMETHYLAMMONIUM OXIDE. HYDROCARBON CONVERSION UTILIZING A CATALYST COMPRISING THE NEW ZEOLITE.
Patent•
27 Aug 1968Patent•
13 Nov 1968TL;DR: In this article, the authors describe a fluid storage system which includes a floating storage vessel having a swivel assembly mounted in its bow structure, which is moored to the water bottom by means of anchor lines extending through hawse tubes.
Abstract: The specification discloses a fluid storage system which includes a floating storage vessel having a swivel assembly mounted in its bow structure. The stationary core of the swivel assembly is moored to the water bottom by means of anchor lines extending through hawse tubes, while the storage structure is free to pivot about the stationary core in response to the combined forces of wind and water. Mounted centrally in a hollow portion of the stationary core of the swivel assembly is a liquid-gas separator unit. The liquid and gas outputs of the separator unit pass through swivel joints to the storage tanks of the floating structure. The separator unit comprises a main pressure vessel and a surge vessel which absorbs shock loads from the riser flowlines.
Patent•
31 Jul 1968TL;DR: In this paper, a method for fluid catalytic cracking of hydrocarbons characterized by a composite catalyst of highly active crystalline aluminosilicate and a relatively less active matrix material is provided.
Abstract: A method is provided for fluid catalytic cracking of hydrocarbons characterized by a composite catalyst of highly active crystalline aluminosilicate and a relatively less active matrix material.
Patent•
15 Jan 1968TL;DR: In this article, the authors used crystalline aluminosilicate zeolites as catalysts for various hydrocarbon conversion processes and were particularly useful for conversion of paraffins in the presence of an alkylatable aromatic hydrocarbon such as benzene.
Abstract: Crystalline aluminosilicate zeolites are used as catalysts for various hydrocarbon conversion processes and are particularly useful for conversion of paraffins in the presence of an alkylatable aromatic hydrocarbon such as benzene.
TL;DR: In this article, a resistance transformation for each phase is introduced which maps the local volume-averaged velocity vector into the local force per unit volume which that phase exerts on the pore walls and the moving phase interfaces.
Abstract: Local volume averaging of the equations of continuity and of motion over each phase in a porous medium is discussed. For a Noll simple material, inertial effects may be neglected with respect to viscous effects as the product of a Reynolds number with a Weissenberg number goes to zero (in the limit of a Newtonian fluid, inertial effects may be neglected as the Reynolds number goes to zero). When inertial effects can be neglected, a resistance transformation for each phase is introduced which in part maps the local volume-averaged velocity vector into the local force per unit volume which that phase exerts on the pore walls and the moving phase interfaces. Capillary pressure is defined through a local surface average of the jump balance for momentum. The shape of the curve denoting capillary pressure as a function of saturation in a two-phase flow may vary with the contact angle. For an isotropic multiphase flow of incompressible materials, the functional dependence of the resistance coefficient for a Noll simple material and for a Newtonian fluid is discussed by means of the Buckingham-Pi theorem.
Patent•
18 Apr 1968TL;DR: In this article, a process for alkylating or dealkylating a compound capable of alkylation or denoising a compound by contacting it in a reaction zone maintained under conditions effective for accomplishing said alkylation with a catalyst comprising a crystalline zeolite characterized by a unique X-ray diffraction pattern or products of thermal treatment of the zeolate.
Abstract: A process for alkylating or dealkylating a compound capable of alkylation or dealkylation by contacting it in a reaction zone maintained under conditions effective for accomplishing said alkylation or dealkylation with a catalyst comprising a crystalline zeolite characterized by a unique X-ray diffraction pattern or products of thermal treatment of the zeolite. The zeolite can be further defined by reference to the following formula expressed in terms of mole ratios of oxides: WHEREIN M is a cation, J is aluminum or gallium and Z is silicon or germanium and n is the valence of M.
Patent•
19 Dec 1968TL;DR: In this article, an oil-soluble salt prepared by reacting a mixture of an organic acid, an alcohol and a diluent with sequential addition, under intermediate refluxing, of a metal oxide and carbon dioxide, was presented.
Abstract: 1,233,327. Overbased metal salts. MOBIL OIL CORP. 10 Dec., 1969 [19 Dec., 1968], No. 60312/69. Heading C2C. [Also in Divisions C3 and C5] The invention comprises an oil-soluble salt prepared by reacting a mixture comprising an oil-soluble organic acid, an alcohol and a diluent with sequential addition, under intermediate refluxing, of a metal oxide and carbon dioxide, said reaction being conducted under substantially anhydrous conditions and in the presence of a halide.
Patent•
26 Jul 1968TL;DR: In this article, the reaction product of an AMINE and a METHYL VINYL ETHER-MALEIC ANHYDRIDE COPOLYMER is described.
Abstract: LIQUID HYDROCARBON COMPOSITIONS ARE PROVIDED CONTAINING, IN AN AMOUNT SUFFICIENT TO IMPART ANTI-STATIC PROPERTIES, THE REACTION PRODUCT OF AN AMINE AND A METHYL VINYL ETHER-MALEIC ANHYDRIDE COPOLYMER.