Abstract: A process for diazotizing an amine comprises the steps of oxidizing nitric oxide in solution with an oxidizing agent to maintain an equilibrium concentration of a diazotizing agent and reacting a primary aromatic amine in situ with said diazotizing agent in said solution.

Abstract: A method for converting solid carbonaceous materials to liquid products. The solid carbonaceous material is first treated with a aqueous composition of a metal carbonate or bicarbonate. This results in the metal being atomically dispersed in the carbonaceous material. The treated solid carbonaceous material is then subjected to liquefaction conditions. The preferred metal is iron.

Abstract: Heretofore waste rubber, a substantial amount of it in the form of used automobile tires, has been buried, burned, or otherwise disposed of in manners and by means totally inconsistent with good ecological practices and considerations. Now, such waste or scrap rubber, both natural and synthetic, can readily be converted in the presence of molten acidic halide Lewis salt catalysts to useful products, including fuels comprising a naptha-like oil, a burnable solid carbonaceous material, and a mixture of gases. The most promising salts are zinc chloride, tin chloride, and antimony iodide. Also, an extremely active catalyst can be prepared by adding up to about 60 percent by weight of sodium chloride to the zinc chloride catalyst. The burnable carbonaceous material has been shown to be a carbon black of moderate quality and is believed to be suitable for reuse in tires if blended with high-quality fresh carbon black.