Patent GB-343807-A (GB)
IPC: B01J29/06
Filed: 1930-04-10
Abstract: Artificial zeolites, which are catalysts for the production of oxygen-containing aliphatic compounds from carbon monoxide and water or steam, are prepared by the union of salts of a strongly alkaline nature with metallates (salts of amphoteric metals), with or without the addition of neutral or appreciably neutral salts. The catalysts must contain at least one element from each of the series: (1) potassium, sodium, lithium, vanadium, chromium, molybdenum, manganese, iron, cobalt, nickel, silver, copper, zinc, cadmium, lead, antimony, bismuth, calcium, strontium, barium: (2) beryllium, magnesium, aluminium, cerium, rare earths, horon, silicon, titanium, zirconium, thorium, uranium, tungsten; these catalytic elements being introduced into either of the three components of the zeolite according to their chemical properties. The precipitation of the zeolite is carried out in a medium of a PH value between 8 and 6,8. When the zeolite contains reducible metallates it may be reduced in two phases, the first at a slightly elevated pressure near 200 DEG C., and under atmospheric pressure with dilute reducing gas, and the second at a higher temperature, 300-500 DEG  C., under pressure and with concentrated reducing gas.  In examples: (1) a solution of potassium permanganate and caustic soda is reduced with alcohol and borax is then added, followed by an acetic acid solution of cerium carbonate, aluminium acetate and malachite; the product is separated by centrifuging and reduced first with 10 per cent carbon monoxide at 200 DEG  C. and then with 80 per cent carbon monoxide at 300-350 DEG C. and 500 atmospheres pressure; by passing a mixture of carbon monoxide and steam in the molecular proportion of 3 : 2 over the catalyst at the temperature and pressure at which reduction is effected, a solution of aliphatic ethers and alcohols is obtained; (2) to a solution of borax and sodium aluminate is added a formic acid solution of lithium and potassium carbonates, thorium formate and aluminium acetate; on passing over this catalyst carbon monoxide saturated with steam at 270-280 DEG  C. and 900 atmospheres pressure, a solution of acetic acid and its homologues is obtained.  Reference has been directed by the Comptroller to Specifications 279,466 and 286,212, [both in Class 1 (i), Chemical processes &c.].ALSO:Alcohols; acids; ethers; aldehydes; ketones.-Oxygen-containing aliphatic compounds are manufactured by the action of carbon monoxide on water or steam in the presence of catalysts consisting of artificial zeolites prepared by the union of salts of a strongly alkaline character with metallates (salts of amphoteric metals), with or without the addition of neutral or appreciably neutral salts.  The catalysts must contain at least one element from each of the series: (1) potassium, sodium, lithium, vanadium, chromium, molybdenum, manganese, iron, cobalt, nickel, silver, copper, zinc, cadmium, lead, antimony, bismuth, calcium, strontium, barium; (2) beryllium, magnesium, aluminium, cerium, rare earths, boron, silicon, titanium, zirconium, thorium, uranium, tungsten; these catalytic elements being introduced into any one of the three components of the zeolite according to their chemical properties.  The catalysts are prepared in a medium with a PH value between 8 and 6,8, and, when they contain reducible metallates, may be reduced in two phases, first at a slightly elevated temperature, near 200 DEG  C., under atmospheric pressure and with dilute reducing gas, and secondly at a higher temperature, 300-500 DEG  C., under pressure and with concentrated reducing gas.  In examples: (1) a solution of aliphatic ethers and alcohols is obtained by passing a mixture of carbon monoxide and steam in the molecular proportion of 3 : 2 at 300-350 DEG  C. and 500 atmospheres pressure over a catalyst prepared by mixing potassium permanganate and caustic soda, reducing with alcohol, adding borax followed by an acetic acid solution of cerium carbonate, aluminium acetate and malachite, and submitting the precipitated zeolite to reduction with 10 per cent carbon monoxide at 200 DEG  C. and then with 80 per cent carbon monoxide at 300-350 DEG  C. and 500 atmospheres pressure; (2) a 20 per cent solution of acetic acid and its homologues is obtained by passing carbon monoxide saturated with steam at 270-280 DEG  C. and 900 atmospheres pressure over a catalyst prepared by adding to an aqueous solution of borax and sodium aluminate a formic acid solution of lithium carbonate, potassium carbonate, thorium formate and aluminium acetate.  Reference has been directed by the Comptroller to Specifications 279,466 and 286,212 [both in Class 2 (iii), Dyes &c.].