Abstract: The invention relates to a method of forming an electrocatalytic surface on an electrode in a simple way, in particular on a lead anode used in the electrolytic recovery of metals. The catalytic coating is formed by a spraying method which does not essentially alter the characteristics of the coating powder during spraying. Transition metal oxides are used as the coating material. After the spray coating the electrode is ready for use without further treatment. The invention also relates to an electrode onto which an electrocatalytic surface is formed.

Abstract: The invention relates to a method of forming an electrocatalytic surface on an electrode in a simple way, in particular on a lead anode used in the electrolytic recovery of metals. The catalytic coating is formed by a spraying method which does not essentially alter the characteristics of the coating powder during spraying. Transition metal oxides are used as the coating material. After the spray coating the electrode is ready for use without further treatment. The invention also relates to an electrode onto which an electrocatalytic surface is formed.

Abstract: The present invention relates to a method for producing high yields of hydrocarbon chlorosilanes by reacting polysilanes with alkyl or alkenyl chloride at a temperature ranging from about 10.degree. C to about 60.degree. C in the presence of a co-catalyst system. The co-catalyst system is comprised of a combined catalytic amount of co-catalyst (a) and co-catalyst (b), wherein co-catalyst (a) is selected from the group consisting of R'.sub.3 N, R'.sub.3 NHCl, R'.sub.4 NCl and R'.sub.4 PCl wherein R' is one or more of an alkyl or aralkyl radical of from 1 to 18 carbon atoms and co-catalyst (b) is selected from the group consisting of metal salts and metal complexes.

Abstract: An acoustical insulating fiber panel having two pairs of parallel edges, elongated extruded framing members extending along the edges of the panel, each framing member being rigid and including a first web portion adapted to engage the edge of the panel, a first flange at right angles to the web for engaging the suspension hanger-flanges, a second flange extending as a projection of the lower surface of the panel and extending a short distance beyond the projection of the first flange. The second flange has further webs extending inwardly of the flange at 90.degree. thereto and forms a material receiving jaw. An aesthetic covering material is stretched across the lower surface of the acoustical fiber panel and engages said so-formed jaws on the second flange of said framing members, and locking means are provided within the jaws for holding the edges of the covering material.