1777. KITA, G. Catalyst for Production of Synthetic Gasoline. Jour. Fuel Soc. Japan, vol. 16, 1937, pp. 497-511, in English, pp. 60-62; Jour. Inst. Petrol. Technol., vol. 23, 1937, p. 362A; British Chem. Abs., 1937, B, p. 1005; Chem. Abs., vol. 31, 1937, p. 6858.

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Literature Abstracts

Further discussion is presented on the suitabilities of different types of catalysts used in the production of synthetic gasoline in the Fischer process. Co catalysts with accelerators, particularly ThO₂ and U₃O₈, give good yields, the quantity required being reduced to 1/6 if pumice is used as the carrier. Increased yields are given by the addition of sucrose which increases the porosity by decomposition of Co(NO₃)₂ at high temperatures. Ni catalysts are highly susceptible to manufacturing conditions and should be prepared by settling with the addition of alkali carbonate, and reduction should be carried out at 450° C., while the Ni should not contain more than 0.5%, and must contain an irreducible oxide accelerator plus a small quantity of alkali. The substitution of Al₂O₃ or acid clay for ThO₂ as an accelerator gave improved results. Alloy catalysts made from Ni-Co-Al-Si alloy from which Al or Si is extracted with alkali have the advantage of small volume, high thermal conductivity, and granular form. Ni-Co catalysts of composition 50% Co-50% Ni+15% Mn+3% ThO₂+5% U₃O₈+125% diatomaceous earth gave the highest yield of gasoline obtained in these tests, 166 cc./m.³ of gas. Fe catalysts are of low activity, producing about 1/3 of the yield of gasoline given by more effective catalysts.