A process for an improved hydrodesulfurization catalyst comprising treating a calcined formed alumina support with a stabilized solution of a cobalt source, a molybdenum source and urea and then drying and activating the treated support to provide a composite of improved activity.

A flame spray material for producing a low thermal conductivity ceramic coating is comprised of a homogeneous ceramic composition formed of zirconium oxide, cerium oxide and yttrium oxide. The composition is preferably in the form of composite particles each of which contains a plurality of subparticles of each of the oxide constituents bonded with an organic binder.

A spectrally sensitized electrophotographic recording element includes a photoconductive layer that comprises a zinc oxide and/or titanium dioxide photoconductor in a film-forming resin and a small quantity of at least one azo dye that has either an o,o'-dihydroxy or an o-amino-o'-hydroxy azo structure.

High-purity copper powder, nickel powder and zinc powder, high-purity oxides of these metals and high-purity carbonates of these metals are recovered from copper-, nickel- or zinc-bearing materials by leaching the material with an aqueous ammonia-ammonium carbonate solution at an elevated temperature and under a partial pressure of oxygen. The copper-, nickel- or zinc-containing leach liquor is then separated from the insoluble residue and contacted with hot gases to cause rapid decomposition of...

The oxides of nitrogen content of a gas stream can be reduced by contacting the gas stream with a catalyst consisting essentially of neodymium oxide and barium oxide on a suitable support at elevated temperatures. The catalysts are especially useful in reducing the nitric oxide content of the exhaust gas of internal combustion engines.

This invention provides an improved process for producing a metal oxide-antimony oxide catalyst, which comprises the steps of (a) heat treating an intimate mixture of the catalyst ingredients at a temperature of 200.degree.-600.degree. C. in the presence of a reducing gas or vapor having an electron donor character, said gas or vapor being present in an amount sufficient to make up a reducing atmosphere, (b) precalcining the resulting product at a temperature of 300.degree.-600.degree. C. in an ...

A system is provided in which particulates, nitrogen oxides, and sulfur oxides are simultaneously removed from flue gases in a granular bed filter and scrubber with a nitrogen oxide-capturing reducing agent and a bed of sulfur oxide-capturing and particulate-removing material. the spent sulfur oxide-capturing and particulate-removing material can be regenerated in a lift pipe riser.

The present invention provides a method for joining an RE123 oxide superconductor matrix obtained by a melt process by the use of a solder material. The (110) plane of an RE123 oxide superconductor matrix obtained by a melt process is used as the plane to be joined, a solder material composed of an RE123 oxide superconductor having a lower melting point than the above-mentioned RE123 oxide superconductor is interposed between the planes to be joined, and this solder material is melted and then s...

A metal oxide alloy layer comprises a first layer including a first metal oxide and having a first thickness, and a second layer formed on the first layer, the second layer including a second metal oxide and having a second thickness, wherein a value of the first thickness is such that the first metal oxide is allowed to move into the second layer and a value of the second thickness is such that the second metal oxide is allowed to move into the first layer to form a single-layered structure in ...

The invention relates to bismuth oxide glass, containing germanium oxide, a method for the production thereof, the use thereof and a glass fiber consisting of said inventive glass.