DE636682C - Process for the production of oxygen-containing organic compounds, in particular lower alcohols such as methanol - Google Patents

Description

Process for the production of oxygen-containing organic compounds, particularly lower alcohols, such as methanol, is the subject of patent 628,427 a process for the production of oxygen-containing organic compounds, in particular lower alcohols, such as methanol, by reducing oxides of carbon by means of Hydrogen and / or hydrocarbons, especially hydrogen-rich, such as methane, with hydrogen and the like predominating over carbon oxides Amount of space applied is applied at higher temperatures and higher pressures. As contact grounds mixtures of the compounds of potassium, rubidium or cesium with easy reducible metal oxides or their compounds or reduction products, including of free metals. Contact masses made of free iron, nickel or cobalt in a mixture with compounds of rubidium or cesium as well as the contact masses according to patent 544665 are excluded in patent 628,427.

It has now been found that in this process, that is, under Use of an excess of hydrogen and / or hydrocarbons, instead of the easily reducible metal oxides or their compounds or reduction products Metals and metalloids, which are difficult to reducible oxides, mixed with compounds of potassium, rubidium and cesium can be used with success, as also with these Contact masses the reaction takes place quickly and largely. Become useful here only small amounts of alkali applied to a larger amount of metal. As suitable Metals and metalloids are primarily those under the applicable working conditions also elements resistant to carbon dioxide and carbon dioxide aluminum, boron, Chromium, manganese, molybdenum, silicon, titanium, niobium, tantalum; Vanadium, tungsten and zircon and their alloys, including carbides, hydrides and nitrides.

It has already been proposed to use catalytic hydrogenation of carbon monoxide to use catalysts under pressure, the compounds of rubdium or cesium or contain both; in the practical implementation of this proposal have always been Iron filings soaked with rubidium hydroxide or cesium hydroxide were used. The application of here stressed contact masses from mixtures of potassium, - Rübidiüiii- @ or cesium compounds. and hard-to-reducible oxides forming metals and the like - offers on the other hand @: over special advantages, since it is with thisi @@ contact masses easily succeed, depending on the chosen working conditions, the valuable methanol practically exclusively or in a mixture with the likewise to obtain very desirable higher alcohols, particularly isobutyl alcohol; it no methane is produced and there are no strong heat build-ups and the like. Like. That could give rise to operational disruptions. ' Example A mixture of 3 parts of pure, dry and oxygen-free hydrogen and 1 part of the same Carbon dioxide becomes at about 500 ° under a pressure of 500 atm. about grains of Aluminum or chromium metal, which are provided with 5% potassium hydroxide, passed; copious amounts of oxygen-containing compounds are formed, especially alcohols.

Claims (1)

PATrN'rANSPIZUCli: Process for the production of oxygen-containing organic compounds, in particular lower alcohols such as methanol, according to patent 628 q.z7, characterized in that when an excess of hydrogen and / or hydrocarbons act on oxides of carbon At higher temperatures and pressures, mixtures of potassium, rubidium or cesium compounds with metals or metalloids or their alloys which are difficult to reducible oxides can be used as the contact mass.