Abstract: Catalysts which comprise metal carbonyls or organometallic complexes in which the metal portion of the complex is selected from a Group VIII metal are useful in hydroformylation reactions. The catalysts which are homogeneous in nature may be recovered from the hydroformylation products by treating the catalyst complex with a nitrogen-containing compound in an aqueous phase whereby said catalyst may be easily separated from the hydroformylation products and recovered.

Abstract: An improved method of preparing support matrices, characterized as inorganic oxides impregnated with a polyamine cross-linked with a bifunctional reagent so as to furnish a plurality of pendant functional groups, comprises impregnating the oxide at a pH less than about 4 and subsequently curing the polyamine-impregnated oxide at a pH from about 8 to about 12. This improved method leads to subsequently prepared immobilized enzyme systems whose activity is increased by about 35%.

Abstract: Disclosed is a method of preparing a catalytic composite useful in the treatment of sour mercaptan-containing petroleum distillates. More specifically, the method of preparation comprises contacting an adsorptive support with a substituted ammonium hydroxide, drying the resulting composite, thereafter contacting the resulting composite with an alkali metal hydroxide and a metal chelate, the alkali metal hydroxide being in a weight ratio with the adsorptive support of from about 0.1:1 to about 1:1, and thereafter drying the resulting catalytic composite.

Abstract: A novel attenuated superactive multimetallic catalytic composite especially useful for converting hydrocarbons comprises a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component, which is maintained in the elemental metallic state during the incorporation of the rhenium carbonyl component, and of a zirconium component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component, zirconium component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.01 to about 5 wt. % zirconium and about 0.1 to about 3.5 wt.

Abstract: Disclosed are a catalytic composite, and a method of preparing a catalytic composite, useful in the treatment of sour mercaptan-containing petroleum distillates, and a method of using the catalytic composite in treating sour petroleum distillates. More specifically, the method of preparation comprises contacting a molecular sieve support with a specified substituted ammonium compound, drying the resulting composite, thereafter contacting the resulting composite with an alkali metal hydroxide and a metal chelate, the alkali metal hydroxide being in a weight ratio with the adsorptive support of from about 0.1:1 to about 1:1, and thereafter drying the resulting catalytic composite. A sour petroleum distillate can be treated with the catalytic composite by contacting the distillate at oxidation conditions with the catalytic composite.

Abstract: Toluene is transalkylated utilizing a catalyst comprising mordenite and arsenic.

Abstract: Disclosed is a catalytic composite especially useful in the treatment of sour mercaptan-containing petroleum distillates. The catalytic composite comprises a metal chelate, an alkali metal hydroxide, and a quaternary ammonium hydroxide disposed on an adsorptive support. Also disclosed is a method for treating sour mercaptan-containing petroleum distillates by contacting the distillates at oxidation conditions with the foregoing catalytic composite.

Abstract: Unsaturated hydrocarbyl halide compounds such as vinyl chloride may be polymerized by treating the compounds at a temperature in the range of from about 50.degree. to about 200.degree. C. and a pressure in the range of from atmospheric to about 100 atmospheres in the presence of a catalyst comprising a Group VIB metal carbonyl as exemplified by molybdenum hexacarbonyl.

Abstract: Sample injection and vaporization system for gas chromatography is capable of continuous injection of a liquid hydrocarbon sample in the -44.degree. F. to 1074.degree. F. boiling range from a closed system such as a flowing liquid stream or high pressure sample bomb. The system overcomes the temperature limitations inherent in the seals of existing sample valves and utilizes a syringe to transport a liquid sample from the sample stream to a hot vaporization zone through which a carrier gas is flowing. Insulating means keep the sample block containing the seals, including one which is contacted by both the carrier gas and sample stream, at a sufficiently low temperature to protect the seals.

Abstract: Improved heat transfer surface for nucleate boiling is produced by metallizing a reticulated organic foam layer placed in contact with a tube or other heat transfer surface so as to form a reticulated metal surface layer which is integrally bonded to the heat transfer surface. The metallized foam layer is then at least partially pyrolyzed to form hollow metal strand portions. The boiling surface so produced is then modified to enhance its long term boiling stability by deforming the hollow strand portions to reduce their minimum internal diameter. In one manufacturing process, suitable small solid particles, which may or may not be permitted to remain in the finished product, are worked into the porous surface of the reticulated metal layer after which the layer is compacted so as to cause the particles to deform the hollow metal strand portions and thereby reduce their ability to carry liquid flow which could "flood out" vapor bubbles trapped in the tips of the hollow strands during a boiling operation.

Abstract: The invention relates to a vehicle seat, of the type in which a seat part is spring-mounted on a base part and in which the height of the seat part above the base part can be varied by varying the preload of the spring. The movement of the seat part is limited by UP-stop and DOWN-stop assemblies and the invention provides means for automatically moving the UP-stop position in dependence upon a change to the static height of the seat.

Abstract: A process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides, in which the mixture is contacted with an adsorbent comprising a crystalline aluminosilicate bound with an inorganic oxide binder material which selectively adsorbs a component from the feed mixture. The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The process comprises the esterification of the crystalline aluminosilicate and/or the binder material with an alcohol at esterification reaction conditions which substantially reduces the undesirable dissolution.

Abstract: Chlorophenolic derived compounds which may be used as herbicides and which contain a contaminant comprising 2,3,7,8-tetrachlorodibenzo-p-dioxin may be purified by subjecting a solution of the compound dissolved in a protic solvent to the emission from a light source having a wave length of from about 180 to about 350 nanometers, such as a laser beam, whereby the contaminant will be decomposed.

Abstract: A method of preparing nitro-substituted diphenyl ethers comprises contacting a salt of a phenol with a nitro-substituted halobenzene in the presence of a phase-transfer reagent under reaction conditions and recovering the reaction product.

Abstract: A solids dispersant comprising an oil-soluble salt is added to catalytic slurry of hydrocarbonaceous charge stock to reduce coke deposits in conversion at temperatures above about 400.degree. F. Dosage is about 0.0001% to 1% of a condensation product of an epihalohydrin and equimolar amount of C.sub.12 -C.sub.40 alkylamine.

Abstract: Laminated heater plate assembly is formed from a plurality of layers of glass cloth and/or glass mat and epoxy resin which are laminated together under heat and pressure. One or more thermally conductive heater members are mounted in a cut-out region(s) in a pre-cured or "C" stage laminate top portion of the assembly while a plurality of uncured or "B" stage glass mat and epoxy resin laminations are stacked, assembled under the "C" stage portion and heater portion(s), and bonded to each other into a rigid, warp-free heater plate assembly which can be repeatedly subjected to steam or hot water without damage. Preferably, the resin density after bonding in the region of the edges of the heater portion(s) and the adjacent surrounding edges of the cut-out region(s) is greater than in locations spaced further from the heater portion(s) in order to enhance the sealing of the assembly in the most critical areas thereof.

Abstract: A catalyst regeneration apparatus for the oxidation of coke from a spent catalyst, said coke being converted to CO, and for the conversion of the CO to CO.sub.2. Hot regenerated catalyst is recycled from a dense bed in the regeneration zone to mix with incoming spent catalyst in a mixer zone. The mixer zone operates in dense phase and is supplied with a relatively small amount of a fluidizing medium, preferably air. After the mixing of spent and fresh catalyst is substantially completed, a relatively large amount of a regenerating gas, preferably air, is admixed with the catalyst mixture, and some coke oxidation occurs. The balance of coke oxidation takes place in a downstream-situated regeneration zone of substantially conventional design. There is a transfer section connecting the mixer zone to the regeneration zone through which the relatively large amount of the regenerating gas is admitted.

Abstract: An additive for inhibiting sedimentation and retarding degradation of hydrocarbon oils as evidenced by discoloration comprises the reaction product of an alkoxyalkylamine with an epihalohydrin at a temperature from about 40.degree. C. to about 150.degree. C. in the presence of an inorganic base.

Abstract: A process for the ammoxidation of alkylaromatic hydrocarbons in a fluidized bed reactor is disclosed. A relatively small stream of catalyst is removed from an unsegregated single catalyst bed within the reaction zone and passed into a regeneration zone operated at a higher temperature. Metals on the catalyst are oxidized by contact in the regeneration zone with a preheated oxygen containing gas stream, which is then passed into the reaction zone. The residual oxygen in this gas stream may supply 15 percent or more of the oxygen consumed in the reaction zone. The continuous regeneration maintains the metals on the catalyst in a high oxidation state.

Abstract: Assembly of a coated screen jacket and a coated pipe base is held together by radially positioned fasteners such as shear pins which pass through overlapping portions of male and female slip fittings which are welded to the screen jacket and pipe base before it is coated. The mating fittings include an internal groove for mounting an O-ring. Since the screen jacket has complementary male and female fittings on its opposite ends, a plurality of short screen jacket portions can be easily mounted in series on a pipe base member.