| 摘要 |
<p>312,044. Du Pont de Nemours & Co., E. I., (Assignees of Lazier, W. A.). May 18, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Methanol.-In the treatment of organic compounds in the presence of oxide catalysts which have both a hydrating and dehydrogenating effect, a repressive agent is added to the catalyst to counteract its normal dehydrogenating effect. Examples of the use of the method are the hydrolysis of methyl chloride to methanol, in which repressive agents in the form of acidic oxides are added to the catalyst to prevent the formation of dimethyl ether, and the hydrolysis of dimethyl ether, in which aluminium sulphate is added to an alumina catalyst to prevent the formation of formaldehyde. Oxide catalysts suitable for hydration are those of aluminium, thorium, zinc and uranium and repressive agents which mav be added to prevent hydrogenation are acidic oxides in the form of acids, acid salts, anhydrides, and ammonium salts.</p> |
