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Return to Abstracts of Literature 1500-1749
1578. IPATIEFF, V. N., AND DOLGOV, B. N. [Study of Catalysts for the Synthesis of Methanol.] Jour. Chem. Ind. (U.S.S.R.), vol. 8, 1931, pp. 825-829; Chem. Abs., vol. 26, 1932, p. 80.
Decomposition of MeOH over various catalysts was studied as a guide to the discovery of the catalyst most active for the MeOH synthesis. Zn-Cr catalysts are best, though Zn and ZnO also may be used. Asbestos forms a better support than pumice. For best results the Zn-Cr nitrates are precipitated from dilute solution by dilute alkaline carbonates, which produce a more active catalyst than the hydroxides on the asbestos at 60°-80°. The density of the catalyst on the support should be high. The catalyst is then reduced by H2 or MeOH vapors. Zn catalysts are less easily poisoned by PH3 than those of Cu. Nitrates of Ce, Th, and UO2 serve as activators in small amounts, but in larger quantities they reduce the catalytic activity. On standing, the activity of all the catalysts decreases.
IPATIEFF, V. N., AND HUHN, W. [Pyrogenetic Contact Reactions of Organic Compounds. VI. Contact Isomerism.] See abs. 1571.
IPATIEFF, V. N., AND LEONTOWITSCH, W. [Pyrogenetic Contact Reactions of Organic Compounds. VII. Contact Metamerism.] See abs. 1572.