Abstract: The removal of a metal or alloy from the surface of a body, in particular turbine blades, by forming close to as in contact with the surface a one or more other metal or metals which will alloy with the metal or alloy to be removed. By forming the one or more other metals in situ, for example by electrolytic methods, attack of the underlying surface such as occurs when removal is effected by dipping the body in a bath of molten metal, is avoided.

Abstract: This invention relates to fabricating wire and particularly wire at least the surface of which consists of platinum or a platinum-based alloy for use in the jewellery industry. The wire according to the invention comprises a first portion at least the outer surface of which consists essentially of platinum or a platinum-based alloy and a second portion in the form of a coating or layer on the outer surface of the first portion, the second portion consisting essentially of a metal or alloy which is soft relative to the platinum or platinum-based alloy. Preferably, the second portion consists essentially of copper.

Abstract: This invention relates to the production of oxidation resistant alloys containing iron, chromium, aluminium and yttrium and/or other rare earth metal or metals in which yttrium and/or other rare earth metal or metals is added to a melt in the form of a master alloy, the master alloy having a melting point of less than 1000.degree. C. The invention also includes an oxidation resistant alloy containing, apart from impurities, yttrium 0.1-3.0%, chromium 5-15%, aluminium 4-6% and iron--balance.

Abstract: A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat on said substrate comprising at least one refractory metal oxide and nickel; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.

Abstract: This invention relates to the staining of cells, and in particular provides a novel reagent for the detection, for example, of DNA (deoxyribonucleic acid) and polysaccharides by electron microscopy.A reagent for staining cells in accordance with the present invention comprises an aqueous solution of a nitrido-bridged complex of osmium or ruthenium and having the general formula:[M.sub.2.sup.IV N(NH.sub.3).sub.8-2x X.sub.5-y (H.sub.2 O).sub.x ]Y.sub.y.where M represents either Os or Ru, X and Y are the same or different anions selected from nitrate, halide and pseudohalide, x is 0 or 1 and y is 2 or 3.

Abstract: A catalyst suitable for use in oxidation and reduction reactions is provided. The catalyst includes an intermetallic compound of Ru, Pd, Ir or Pt and one or more base metals coated upon a substrate.

Abstract: A cis co-ordination compound of platinum having the structure ##STR1## in which X and Y are the same or different ligands selected from sulphate, phosphate, nitrate, carboxylate, halogen-substituted carboxylate and water and A and B are the same or different branched chain aliphatic amines co-ordinated to the Pt through their N atoms, such that the platinum is present as Pt.sup.2+.

Abstract: This invention relates to the purification of air and other gaseous media. In particular the invention is concerned with the decomposition of one or more of the oxides of nitrogen which may be present in a gas stream also containing gaseous compounds such as carbon monoxide and hydrocarbons. In certain cases, the gas stream may contain a stoichiometric excess of oxygen or an oxidizing agent.The catalyst used in the process of the invention is a mixed oxide of iron and cobalt selected from the group consisting of(a) Co.sup.II.sub.x Fe.sup.II.sub.1-x Fe.sup.III.sub.2 O.sub.4 where x normally has values 0.ltoreq..times..ltoreq.1 and,(b) Co.sup.II Co.sup.III.sub.(x-1) Fe.sup.III.sub.(3-x) O.sub.4 where x normally has values 1.ltoreq..times..ltoreq.3.

Abstract: A coordination compounds of platinum having the Structure: ##STR1## in which R is H or Me and pharmaceutical compositions containing them are disclosed.

Abstract: A cis co-ordination compound of platinum having the structure ##STR1## in which X and Y are the same or different ligands selected from halide, sulphate, phosphate, nitrate, carboxylate, carboxylate substituted with halogen and water and A and B are the same or different straight-chain alkyl amines containing at least 3 carbon atoms in the alkyl chain co-ordinated to the Pt through their N atoms, such that the platinum is present as Pt.sup.2+.

Abstract: A temperature sensitive element of a resistance thermometer comprising an electrically conductive path formed upon a surface of a cylindrical substrate made from an electrically non-conducting material, said electrically conducting path comprising a layer of fused vitreous material containing an electrically conducting metal selected from the group consisting of gold, silver, platinum, palladium, rhodium, iridium, ruthenium, iron, cobalt, nickel and copper, said element having an outer protective coating made from a glaze.

Abstract: This invention relates to the production of formaldehyde and to catalysts therefor.In particular the inventor relates to a process for the production of formaldehyde from methanol including the passage, at an elevated temperature, of a gas stream containing methanol and oxygen through a catalyst, the catalyst comprising a monolithic support provided with channels for passage therethrough of the gas stream and with the channel wall surfaces coated or impregnated with one or more elements selected from the group consisting of copper, silver, gold and iron.

Abstract: A cis co-ordination compound of platinum having the structure ##STR1## in which X and Y are the same or different ligands selected from sulphate, phosphate, nitrate, tartronate, benzylmalonate, cyclobutane-1, 1-dicarboxylate, phthalate, oxalate, tartrate, pyruvate, gluconate, succinato, glutarato, adipato, pimelato and malato and water and A and B are the same or different alicyclic amines selected from cyclopentamine and cyclohexylamine co-ordinated to the Pt through their N atoms, such that the platinum is present as Pt.sup.2+.

Abstract: This invention relates to catalytic hydroformylation reactions, for example the hydroformylation of internal olefins. In particular the invention relates to a process for the production of a straight chain aldehyde from an olefin comprising reacting the said olefin in a liquid reaction medium with hydrogen and carbon monoxide at a total pressure of less than 500 psig in the presence of a complex of Rh(I) in solution in the said medium and a homogeneous co-catalyst dissolved in said reaction medium comprising a co-ordination complex of a transition metal other than rhodium selected from Group 6 or Group 8 of the Periodic Table.The transition metal is, preferably, selected from the group consisting of Cr, Mo, W, Fe, Co, Pd, Pt and Ru.

Abstract: This invention relates to catalytic hydroformylation of internal olefins. In particular the invention relates to a process for the production of a straight chain aldehyde from an olefin comprising reacting said olefin in a liquid reaction medium with hydrogen and carbon monoxide in the presence of a complex of Rh(I) in solution in the said medium as catalyst and a heterogeneous co-catalyst comprising a catalytic metal deposited upon a solid particulate support.

Abstract: A composition of use in compounding an electroplating bath for electrodeposition of gold alloys. The composition contains a nitrosulphite gold complex and at least an alloying agent in the form of a sulphite.

Abstract: Apparatus for the storage of hydrogen comprising a fibrous encapsulating material and solid particles of an intermetallic compound capable of reversibly absorbing hydrogen encapsulated in the material, the material being porous to the ingress and egress of hydrogen, but being impervious to the solid particles of the intermetallic compound, and a cylindrical gas tight heat exchange chamber, including an inlet and outlet, enclosing the encapsulated intermetallic compound, the porous, fibrous material being of generally strip form and being spirally wound to form a generally cylindrical body which is housed within the gas tight chamber.

Abstract: This invention relates to catalysts suitable for the catalytic oxidation of hydrocarbons and carbon monoxide and for the catalytic reduction of oxides of nitrogen in the presence, respectively, of suitable oxidizing and reducing means. The invention is especially concerned with catalysts which are suitable for the catalytic purification or control of the exhaust gases of petrol driven internal combustion engines and of diesel engines. Such catalysts have been variously described as "three-way", "polyfunctional" and "multi-functional" catalysts. In more detail a three way catalyst of the invention comprises a substrate having supported thereon at least one intermetallic compound of the general formula A.sub.x B.sub.y where A represents one or more Groups VIII metals having an atomic number not larger than 78; B represents one or more metals of the group consisting of Al, Sc, Y, the lanthanides, Ti, Zr, Hf, V, Nb and Ta and x and y are integers.

Abstract: A catalyst comprising a substrate having deposited thereon a first coating containing a refractory metal oxide and having deposited upon the said oxide one or more intermetallic compounds of the general formula A.sub.x B.sub.y where A is selected from the group consisting of Ru, Rh, Pd, Ir and Pt, and B is selected from the group consisting of Al, Sc, Y, the lanthanides, Ti, Zr, Hf, V, Nb, and Ta, and where x and y are integral and may have values of 1 or more.

Abstract: This invention relates to intimate mixtures of ceramic materials and metals, usually referred to as cermets. A cermet of the invention comprises a first phase of ceramic particles and a second phase of a metallic material wherein at least a major proportion of the particles have their surfaces treated with an additive which forms a material capable of bonding together the materials of the first and second phase. The metallic phase may be gold, silver or a platinum group metal. The ceramic phase may be a refractory oxide of alumina and the additive is derived from at least one of the metals yttrium, aluminium, titanium, vanadium, chromium and nickel.The cermet materials of this invention are particularly useful in the manufacture of erosion resistant components used in glass making operations and in the electrical industry.