Abstract: The invention relates to a flip-chip integrated circuit package of the ball array type, wherein: the underside of the package includes a plurality of receiving pads for signal, ground and solder balls; stacks of signal and ground vias, electrically connected to respective receiving pads, pass vertically through the package's dielectric body forming a quasi-coaxial structure. In an upper part of the package body: the signal vias are electrically connected to a lesser number of signal conductive bumps protruding from the upper surface of the package's dielectric body; and at least two ground vias are connected by means of conductive projections to respective ground conductive bumps, forming a ring around the signal conductive bumps.

Abstract: Active alumina catalysts, well suited for the Claus reaction, for the hydrolysis of organosulfur compounds and for catalytically removing objectionable sulfur compounds from gaseous effluents comprised thereof, contain a cocatalytically effective amount of sodium values, such effective amount, expressed by weight of Na2O, ranging from 1,200 ppm to 2,700 ppm.

Abstract: A process for the catalytic conversion of an alkane to an alkene comprising reacting a C2 to C5 alkane and a sulfur-containing compound at a temperature of from 300° C. to 650° C. in the presence of a catalyst having a surface area greater than 100 square meters per gram, to afford the corresponding C2 to C5 alkene and hydrogen sulfide.

Abstract: The invention relates to a catalyst for the treatment of gases containing sulphur compounds, using the Claus reaction or using hydrolysis, which is made up of alumina-based porous particles and characterized in that the cumulative volume created by all the pores whose diameter is greater than 0.1 .mu.m, V.sub.0.1, is greater than 12 ml/100 g of catalyst and in that the cumulative volume created by all the pores whose diameter is greater than 1 .mu.m, V.sub.1, is such that the ratio V.sub.1 /V.sub.0.1 is higher than or equal to 0.65. This catalyst can be employed for the treatment of gases containing sulphur compounds by using the Claus reaction, or of gases containing organic sulphur compounds by using a hydrolysis reaction.

Abstract: The invention relates to a process for the direct oxidation of sulphur compounds into elemental sulphur and/or into sulphates at a temperature below 200.degree. C., in which a supported catalyst whose catalytically active phase comprises copper is used, the copper element being present in a content of at least 2% by weight relative to the catalyst and of at least 15 by weight relative to the sum of the elements of the catalytically active phase.The use of a catalyst of this type ensures a high conversion of the H.sub.2 S while at the same time minimizing the conversion into SO.sub.2.

Abstract: Catalyst compositions well adopted for the oxidation of olefins into .alpha.,.beta.-unsaturated aldehydes, e.g., for the oxidation of propylene into acrolein, comprise a particulate support substrate uniformly coated with 15% to 33% by weight of an adherent layer of a catalytically active phase, such support substrate comprising inert and solid spheres having a diameter ranging from 0.5 to 6 mm, such catalytically active phase comprising a catalytically effective amount of bismuth and iron molybdate, dopant amounts of phosphorus and potassium and, optionally, at least one other catalytically active metal or non-metal, and the phosphorus and the potassium each being present in such catalytically active phase in an atomic quantity ranging from 0.005 to 0.06 per 12 atoms of molybdenum, or of molybdenum plus any tungsten therein.

Abstract: Catalyst compositions well adopted for the oxidation of olefins into .alpha.,.beta.-unsaturated aldehydes, e.g., for the oxidation of propylene into acrolein, comprise a particulate support substrate uniformly coated with 15% to 33% by weight of an adherent layer of a catalytically active phase, such support substrate comprising inert and solid spheres having a diameter ranging from 0.5 to 6 mm, such catalytically active phase comprising a catalytically effective amount of bismuth and iron molybdate, dopant amounts of phosphorus and potassium and, optionally, at least one other catalytically active metal or non-metal, and the phosphorus and the potassium each being present in such catalytically active phase in an atomic quantity ranging from 0.005 to 0.06 per 12 atoms of molybdenum, or of molybdenum plus any tungsten therein.

Abstract: Coated catalyst particulates, well adopted for the oxidation of olefins into .alpha.,.beta.-unsaturated aldehydes, e.g., for the oxidation of propylene into acrolein, and the coating layer of which comprising a catalytically active phase including a catalytically effective amount of bismuth and iron molybdate and dopant amounts of phosphorus and potassium, are prepared by providing a calcined and ground catalytically active intermediate composition devoid of phosphorus and potassium values, coating this intermediate composition onto a particulate support substrate comprising rough-surfaced inert and solid spheres, also coating phosphorus and potassium values onto the particulate support substrate, and then calcining the support particulates thus coated.