Abstract: An improved method for preparing phenylphosphonous dihalide comprises reacting PCl.sub.3 and benzene in an electrically heated fluid bed reactor.

Abstract: Thiophenols are produced by reacting the corresponding benzene compound with hydrogen sulfide in contact with an absorptive catalyst, such as activated carbon, calcined petroleum coke, etc. Temperatures in the range of from about 500.degree. to 900.degree. C. are employed.

Abstract: A fluidized bed reactor system comprising a vessel adapted to contain a fluidized bed. A plurality of fluid injector means are mounted through the vessel wall for injecting and distributing a fluidizing medium into the lower portion of the vessel. Each injector means is comprised of an injector having a nozzle end projecting into the vessel. The injector is withdrawably mounted through the vessel wall, the nozzle end having at least one downwardly directed orifice. A shield means is provided which is mounted to the vessel wall above the nozzle end for maintaining a nozzle opening in the bed when the injector is withdrawn. The reactor system is further comprised of a fluid supply means in fluid communication with each injector for supplying the fluidizing medium to each nozzle end. When it is required to replace the injector due, for example, to clogging of the orifices or deterioration of the nozzle end, the injector is withdrawn from the vessel, replaced or repaired and then inserted into the vessel.

Abstract: The stability of vanadium tetrachloride is improved by the addition of phosphorus trichloride such as phosphorus trichloride. Preferably, the vanadium tetrachloride is provided by the reductive chlorination of vanadium oxychloride in the presence of activated carbon having a sulfur content less than 1% by weight.

Abstract: Product yields are increased and effluent streams purified for disposal by an improved process for producing vanadium chlorides. The process comprises reacting vanadium oxide with chlorine and reactant carbon to produce substantially pure vanadium chlorides and an effluent stream containing vanadium chlorides and unreacted chlorine. The effluent stream is contacted with adsorptive carbon whereby the vanadium chlorides and chlorine are adsorbed thereon. The adsorptive carbon is subsequently recycled and used as the reactant carbon.