Abstract: The invention relates to a process for recovering the transition metal component of catalysts used in the hydroconversion of heavy hydrocarbonaceous materials. In accordance with the invention, a slurry of a transition metal catalyst and hydrocarbon is catalytically desulfurized resulting in a desulfurized product and a solid residue containing the transition metal. The transition metal may be recovered by coking the residue and then dividing the coker residue into two portions are combusted with the flue dust from the first combustion zone being conducted to the second combustion zone. The flue dust from the second combustion zone is treated with ammonia and ammonium carbonate in order to obtain ammonium molybdate.

Abstract: Process for regeneration of a catalytic moving bed in which the catalyst successively passes through at least one combustion zone A, at least one halogenation zone B, and at least one calcination zone C, whereby this process operates in a partial-regeneration-mode, the partially coked catalyst that is obtained from the last combustion zone passes into the halogenation zone in which the amount of halogen and the amount of oxygen are essentially zero--the valves of tubes (19) and (20) are then virtually closed--and the catalyst then passes through the calcination zone in which the amount of oxygen is essentially zero--the valve of tube (11) is then virtually closed.

Abstract: An activated carbon catalyst having sulfur dispersed homogeneously thereon, the sulfur being chemically bonded to the activated carbon. A method of making the catalyst involves forming an intimate mixture of a synthetic carbon precursor and a sulfur-containing material, curing the carbon precursor, carbonizing the carbon precursor, activating the carbonized carbon precursor to produce an activated carbon catalyst having sulfur chemically bonded to the activated carbon and uniformly dispersed thereon.

Abstract: A catalyst containing Re.sub.2 O.sub.7 on an inorganic support, wherein the Re.sub.2 O.sub.7 component is on the support in the form of Re.sub.2 O.sub.7 particles having a diameter of <1 nm, the rhenium surface area, determined by N.sub.2 O pulse chemisorption, is at least 0.4 m.sup.2 /g, and the Re.sub.2 O.sub.7 component is distributed over the support in the form of an outer shell having a maximum thickness of 1.5 mm.

Abstract: An aluminum oxide mass characterized by a specific surface area greater than or equal to 70 m.sup.2 /g and a narrow pore radius distribution, with at least 90% of the pore radii being approximately 0.5 to 2.5 nm, preferably approximately 1.7 to 2.2 nm.

Abstract: The invention relates to aerogels containing functional residues of the formula (I)--Y--Z, wherein Y is a straight-chained or branched alkylene group with 1 to 22 carbon atoms; Z is halogen, pseudohalogen, SR.sup.1, PR.sup.2 R.sup.3, colorant residue or metal complex residue; R.sup.1 is H, a straight-chained or branched alkyl group with 1 to 22 carbon atoms or an aryl group with 4 to 10 carbon atoms; and R.sup.2 and R.sup.3 are identical or different, a straight-chained or branched alkyl group with 1 to 22 carbon atoms, or an aryl group with 4 to 10 carbon atoms. The aerogels are suitable, for example, as catalyst stayes and/or sensors. They can be obtained by metal alcoholates and metal alcoholates in which at least one alcoholate residue is replaced by the --Y--Z group being converted into a lyogel by hydrolysis and condensation, and subsequently being dried.

Abstract: Contaminated adsorbent particles, preferably activated carbon particles, are regenerated in water at supercritical conditions. The particles are preferably mixed in water prior to treatment. The mixture is preferably heated to a temperature at least about 900.degree. F. (482.degree. C.) and pressurized to a pressure sufficient to achieve supercritical conditions for water. The mixture is preferably flowed through a first reactor for a time sufficient to substantially remove the organic contaminants from the particles. The particles are separated from the water and the mixture of water and organic contaminants may be transferred to a second reactor. Within the second reactor the organic contaminants are preferably substantially oxidized by supercritical water oxidation.

Abstract: A composition for a granular solid possessing superior absorbancy for absorbing oils. The composition includes perlite plaster aggregate, corn starch, and sodium bicarbonate, all being dry and powdered. Proportions of the constituent materials is nine parts by volume perlite aggregate, two parts by volume corn starch, and one part by volume sodium bicarbonate.

Abstract: Calcium sulfide particles in mixtures with carbon particles, as in coal gasifier waste, are converted to calcium oxide by repeated cycles of oxidation and reduction by utilizing the carbon as a source of the reducing gas required for the treatment. The treatment can be conducted in a two zone fluidized bed reactor by limiting the amount and concentration of oxygen supplied to a lower reducing zone and by supplying excess oxygen to an upper oxidizing zone. Alternatively, for particles less than 0.5 mm in size, the treatment can be conducted by utilizing either two transport reactors or two circulating fluidized bed reactors in series whereby the first reactor in the series is maintained in a reducing state and the second reactor is maintained in an oxidizing state. The particles are transported sequentially through both reactors and recycled several times.

Abstract: A heterogeneous massive catalyst is disclosed which comprises: at least one catalytically active component in the form of solid particles and at least one catalytically inert component in the form of solid particles wherein the components are dispersed in one another, wherein the inert component has a mean particle diameter greater than the mean particle diameter of the catalytically active component, and wherein the particles of the catalytically active material are grown on the particles of the catalytically inert material as well as a process for preparing the catalyst.

Abstract: The invention provides a method for the preparation of a sorbent capable of efficiently and selectively sorbing cesium ions from an aqueous solution. The method comprises impregnating the pores of a high-porosity carrier material such as silica gel and porous adsorbent resin with water-soluble potassium or sodium hexacyanoferrate (II) and contacting the carrier material with a solution of a copper salt in a solvent in which the water-soluble hexacyanoferrate (II) is hardly soluble such as ethyl alcohol to convert the water-soluble hexacyanoferrate (II) into water-insoluble copper hexacyanoferrate (II). The cesium ions sorbed on the sorbent can be readily desorbed and the sorbent can readily be regenerated. Alternatively, the carrier material is impregnated with a water-soluble hexacyanoferrate (III) which is converted into copper hexacyanoferrate (III) followed by a reducing reaction of the same into copper hexacyanoferrate (II).