Abstract: A process for concurrently producing diisopropyl ether and isopropyl ethyl ether from water, ethanol from an independent source, and propylene, has been developed. The product mixture may be used as a high octane number booster due mainly to the presence of the diisopropyl ether and to a lesser extent, the isopropyl ethyl ether. Furthermore, the product mixture, upon blending with gasoline, incorporates a renewable resource into the gasoline since the isopropyl ethyl ether is produced from ethanol. Optionally, the product mixture may be passed through an acid removal zone to remove acid, if present, before being recycled or further processed. A portion of the product mixture is recycled to the reaction zone to increase the conversion of reactants to products.

Abstract: A method for treating an aqueous stream containing a water-soluble, inorganic sulfide compound wherein the stream is contacted with oxygen at a pH in the range of less than about 12 and an oxygen to sulfur molar ratio greater than about 5 with an oxidizing catalyst at oxidation conditions selected to provide a high conversion of the inorganic sulfide compound to sulfate to thereby produce a substantially sulfide-free treated aqueous product stream.

Abstract: This invention relates to a catalyst comprising a mixture of a primary refractory inorganic oxide having dispersed thereon at least one first active component selected from the group consisting of rare earth oxides and a secondary support consisting of zirconia, titania or cerium oxide having dispersed thereon at least one second active component which is a metal oxide, the metal selected from the group consisting of metals which form a stable sulfide said mixture having at least one main catalytic metal selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium deposited thereon. This invention also relates to a method of manufacturing said catalyst. Finally a method to minimize the formation of H.sub.2 S when automotive exhaust is contacted with a method is also claimed.

Abstract: This invention relates to a catalytic composite comprising a mixture of a primary refractory inorganic oxide having dispersed thereon at least one first active component selected from the group consisting of rare earth oxides and a secondary support consisting of zirconia, titania or cerium oxide having dispersed thereon at least one second active component selected from the group consisting of metals which form a stable sulfide said mixture having at least one main catalytic metal selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium deposited thereon. This invention also relates to a method of manufacturing said catalytic composite. Finally a method to minimize the formation of H.sub.2 S when automotive exhaust is contacted with a catalytic composite is also claimed.