Abstract: Contaminants produced in lubricating oils during use in internal combustion engines are converted to removable particulate matter by treatment with an amine. If an amine of higher activity is employed, the resulting refined product is re-usable as a lubricating oil and if an amine of lower activity is employed, the resulting product can be used as a corrosion inhibitor for metal surfaces.

Abstract: A high surface area alumina is provided exhibiting a surface area ranging from about 350 to about 550 meters.sup.2 /gram.The high surface area alumina is prepared by reacting substantially anhydrous aluminum chloride with ammonia at temperatures ranging from about 100.degree. to about 900.degree. F. to form an aluminum chloride-ammonia complex comprising aluminum chloride polyammoniates, and hydrolyzing said polyammoniates to obtain high surface area alumina.

Abstract: This invention relates to novel catalysts, of two distinct types, useful for the catalytic hydroconversion of the 1050.degree. F.+ hydrocarbon material contained in heavy crudes and residua such that the resulting product will be suitable for further processing in conventional refinery operations allowing maximization of clean liquid products. Catalysts, which include Group VIB and Group VIII metals, preferably in admixture, and preferably including a Group IVA metal, notably germanium, having certain critical ranges of physical characteristics inclusive of large uniform pore sizes, are used for the conversion, these having been shown to possess improved catalytic activity and selectivity for the hydroconversion of the 1050.degree. F.+ materials of the heavy feeds and residua. Novel methods are described for the preparation of such catalysts, as well as for use of such catalysts. One of the catalysts, i.e.

Abstract: High surface area alumina materials, which are particularly effective catalyst supports or carriers, are prepared by heating alumina monohydrate, alumina trihydrate or mixtures thereof from 450.degree.-500.degree. to at least 800.degree.F in the presence of excess elemental chlorine. The heating of the alumina material with elemental chlorine is conducted prior to said alumina material being heated to a temperature above about 450.degree.-500.degree.F in the absence of elemental chlorine. The alumina monohydrate or trihydrate compositions are derived from the aqueous phase reaction of ethylene oxide with aluminum chloride and/or aluminum hydroxychloride.