Abstract: A composite ceramic material having improved properties is disclosed as well as several methods for preparing the same. The composite powder is substantially comprised of zirconia and spinel phases, produced by precipitation and calcination of the precipitate of the oxide forming precursor salts. A preferred method for introducing the zirconium is as a soluble and/or decomposable salt during precipitation of the spinel forming hydroxyl or halo hydroxyl spinel forming salts. The zirconium salt decomposes to zirconia during calcining and/or sintering of the powder resulting from the precipitation. A preferred composite is that obtained from magnesium and aluminum salts, resulting in a MgAl.sub.2 O.sub.4 spinel and intimately admixed ZrO.sub.2 which contains a stabilizing agent.

Abstract: There is described a simple two compartment electrochemical cell which may be associated in multiples in parallel for electrochemically freeing alkanolamines of the heat stable salt forming anions found or formed in acid gas conditioning thermal regenerative sorbent processes using alkanolamines as sorbents for acid gases, the cell having an anion exchange membrane separating the cell into two compartments and an anode comprised of an iridium coated electroconductive metal electrode.

Abstract: There is described a simple two compartment electrochemical cell which may be associated in multiples in parallel for electrochemically freeing alkanolamines of the heat stable salt forming anions found or formed in acid gas conditioning thermal regenerative sorbent processes using alkanolamines as sorbents for acid gases, the cell having an anion exchange membrane separating the cell into two compartments and an anode comprised of platinum or a platinum coated electroconductive metal electrode.

Abstract: There is disclosed a process for treating liquid (liquifiable) and gaseous hydrocarbons to remove substantially all of the acid gases including COS by contacting the hydrocarbon streams with specific aqueous treating agents in a series of sequential specific limit operations and apparatus.

Abstract: A method of producing layered structures of metal hydroxides (one or more metals) free of chloride or chlorine is disclosed. A specific ratio layered structure hydroxide is obtained from mixing first and second metals (respectively in the form of hydroxide, oxyhydroxide carbonate or nitrate as to the first metal and a hydroxide or alkali metal oxide as to the second) in proportions yielding a precipitated layered structure. The precipitators metal hydroxides with any excess of metal over 1:1 forming a segregated phase. Processing involves mixing, maintaining as a suspension up to about 48 hours at temperatures above about 40.degree. C. followed by cooling to recover the precipitate.

Abstract: A device for measuring molten metal flow within a conduit capable of use without external cooling employing principles of magnetic field and electrical current generation therefrom by employing a post manufactured oxidation stabilized thermally treated mica as the electrica insulation between the laminations of the elements of the fingered magnetic laminate and annularly wound coils within the fingered laminate assembly, comprised of a tube and a tube core positioned within the tube forming an annulus therebetween, at least a pair of fingered laminate assemblies having an even number of fingers positioned about the periphery of said tube, each of the spaces between the fingers containing coils annularly wound about the tube, alternating coils being connected to a power source to induce a current in the intermediate coil(s) when metal is flowing in the annulus, which current is proportionate to the metal flow and is measured.

Abstract: A process and the product made thereby are disclosed in the preferred form of this process wherein a polymeric packing material is first fluorinated at ambient temperature for an interval of contact with elemental fluorine. Then, contact with a strong base converts the polymer into conjugated double bonds, reducing electrical resistance. The double bonds yield a surface layer able to controllably conduct electrical current.

Abstract: There is disclosed the process for the separation of the clay particles (ash) from coal particles by the use of two immiscible liquids followed by the separation and removal of the liquids from the solids.

Abstract: A process is disclosed for converting water soluble salts of insoluble organic acids to their insoluble acid form employing electrochemical techniques.

Abstract: A procedure is described whereby it can be determined to what extent the non-ionic constituents of a rosin flux, employed during soldering operations in the manufacture of electronic circuit boards, have been removed following the flux removal step. The procedure also permits conductivity readings to be made on the test solution to determine the extent of residual ionic constituents on such boards.

Abstract: An improved catalyst for removal of acetylenes from liquid hydrocarbon streams with a minimum loss of diolefinic unsaturation present in said liquid composition is disclosed. The catalytic materials, basically copper metal impregnated on a gamma alumina support prepared from an organo aluminum compound. The support has properties not found in alumina prepared from naturally occurring precursors.

Abstract: A composition comprised ofI. 60 to 90% wt. of(a) from 70 to 95 weight percent of at least one of(i) one or more MgAl.sub.2 O.sub.4 spinels heated at a temperature of about 600.degree. C. to about 1700.degree. C. and having less than 20% by weight of segregated phases of Al.sub.2 O.sub.3 or MgO;(ii) MgAl(OH).sub.5-ny X.sub.y.sup.n where y.ltoreq.1; x=OH.sup.-, halogen, SO.sub.4.sup.=, NO.sub.3.sup.- carboxylate, halogenated carboxylate, H.sub.2 PO.sub.4.sup.-, HPO.sub.4.sup.=, HCO.sub.3.sup.-, and the like which is prepared by coprecipitating a Mg and Al salt under controlled pH and Mg/Al ratios and which may also include segregated phases of AlO(OH), Mg(OH).sub.2 and/or Al(OH).sub.3 following pH adjustment;(iii) intermediates of (1) and (2) prepared by partial calcination of (2) at temperatures .gtoreq.300.degree. C. but .ltoreq.600.degree. C.

Abstract: Corrosion inhibiting compositions for use in aqueous absorbent gas-liquid contacting processes for recovering carbon dioxide (CO.sub.2) from industrial gas and oil combustion and partial combustion process flue gases, particularly employing copper carbonate, in combination with one or more of dihydroxyethylglycine, alkali metal permangenate, alkali metal thiocyanate, nickel or bismuth oxides with or without an alkali metal cartonate. The inhibitors are effective in reducing corrosion of metals in contact with the aqueous absorbent in the absorbent regeneration section of the plant as well as reduce the thermal degradation of the absorbent when high oxygen content combustion gases are treated to recover the CO.sub.2.

Abstract: An improved catalyst for removal of acetylenes from liquid hydrocarbon streams with a minimum loss of diolefinic unsaturation present in said liquid composition is disclosed. The catalytic materials, basically copper metal associated with one or more activator metals are impregnated on a gamma alumina support prepared from an organo aluminum compound. The support has properties not found in alumina prepared from naturally occurring precursors.

Abstract: A spinel containing slip-casting composition, method for preparing the spinel slip-casting composition and method for casting the slip into usable forms are described. The spinel employed to prepare the castable slips is a pre-calcined spinel and a calcined spinel each prepared in the manner of copending application Ser. No. 184,189, filed Sept. 4, 1980, which is ball-milled with water, then mixed with a deflocculant at pH 9 or below. The slurry or "slip" is cast into a mold porous to water until the desired thickness of solid has been obtained and the excess "slip" decanted or otherwise withdrawn from the mold. The green shape is retained in the mold until it gains green strength, 1 hour to 5 days, and thereafter placed in an oven wherein it is fired to above about 1400.degree. C. for from 1 to 20 hours until it has reached its maximum density of between about 50 and 99 percent of theoretical.

Abstract: An apparatus is disclosed which monitors in a continuous manner the parallel alignment between the shafts of two coupled rotating machines while the machinery is in service. The apparatus consists of a pair of anchors for securing the elements to the machines, a bar slidably mated with the anchors spanning the distance between the machines, gauge holders slidably located on the bar and gauges secured to the holders so that the measuring means is in contact with the hub of each machine. The apparatus allows both horizontal and vertical alignment measurements to be made while the machines are operating.

Abstract: Several methods are set forth for preparing polymetallic spinels by coprecipitating two or more metal compounds in a proportion to provide a total of eight positive valences when combined in the oxide form in the spinel crystal lattice. The methods disclosed require coprecipitation of the metals in the hydroxide form or convertible to the hydroxide-oxide form, calcining the coprecipitate, and finally sintering the calcined material at about one-half its melting point or greater, thereby forming a spinel which has a density of greater than 50 percent of the theoretical density of spinel crystal. Also disclosed are techniques for preparing spinels having more than two metals incorporated into the spinel lattice, as well as a separate oxide phase associated with the spinel crystallites, and slipcasting compositions.

Abstract: A spinel containing slip-casting composition, a method for preparing the spinel slip-casting composition and a method for casting the slip into usable forms are described. The spinel employed to prepare the castable slips is a pre-calcined spinel prepared in the manner of copending application Ser. No. 184,189, filed Sept. 4, 1980, which is ball-milled with water, then mixed with a deflocculant at pH 9 or below and optionally with a molding aid. The slurry or "slip" is cast into a mold porous to water until the desired thickness of solid has been obtained and the excess "slip" decanted or otherwise withdrawn from the mold i.e., drain cast method or the "slip" is solid cast and dried to produce a green solid casting. The green shape is retained in the mold until it gains green strength, 1 hour to 5 days, and thereafter placed in an oven wherein it is fired to above about 1400.degree. C. for from 1 to 20 hours until it has reached its maximum density of between about 55 and 99 percent of theoretical.

Abstract: A method for preparing spinel (MgAl.sub.2 O.sub.4) surfaces on alumina or alumino silicate articles or shapes by exposure of the article or shape to molten or vaporous magnesium or magnesium alloy for from two to ten hours under nonpyrophoric conditions.

Abstract: A process for recovering amino alcohols, e.g. diisopropanolamine, from their corresponding cyclic reaction products, which products are the result of the reaction of CO.sub.2 and the amino alcohol, i.e., oxazolidinones, a situation commonly encountered in acid gas removal processes employing the amino alcohols alone or in combination with other liquids such as sulfolane (tetrahydrothiophene-1,1-dioxide) for example, by reacting the cyclic product with a small but catalytic amount (less than about 10 mol percent) of a base metal compound such as the hydroxide or a base which will convert into a hydroxide under the conditions of reaction, i.e. the acid carbonates, carbonates, metaborates, oxides or hydrides at temperatures above about 105.degree. C. to about the atmospheric boiling point of the reaction medium and, optionally, recovering the amino alcohol from the reaction mass.