2015.     KURIN, N. P.  [Investigations of the Activities of the ZnS-CuS Methanol Catalysts.]  Nauch. Tekh. Konferentsiya v Svyazi s Sorokaletnim Yubileem Uchebno-Nauch.  Deyatel-nosti Tomsk. Ind. Inst., Tezisy Dokladov, 1940, pp. 108-110; Khim. Referat. Zuhr., vol. 4, No. 4, 1941, p. 100; Chem. Abs., vol. 37, 1943, p. 5306.

        ZnS-CuS catalysts were obtained by the separate precipitation of ZnS and CuS, and they contained various amounts of CuS.  Pure CuS and ZnS also were studied.  The activities of the catalysts were determined by the decomposition of MeOH vapors at volume velocities 420-2,100 (vol. of vapor/unit vol. of catalyst/unit vol. of catalyst/hr.) and at temperatures 250°-450°.  Data for catalysts possessing a maximum activity are given.  H₂S poisoned the catalysts, but their activities were restored by the passage of MeOH vapors.  The decomposition velocity constants of MeOH were calculated.  The relation between log k and 1/T indicated that the decomposition process of MeOH took place through two stages.  The 1^st stage presumably was the decomposition of MeOH into HCHO and H₂ and the second stage the decomposition of HCHO into CO and H₂.  The activation energies of these reactions were determined.