Patent application number | Description | Published |
20100311567 | REGENERATION OF ZEOLITE CARBONYLATION CATALYSTS - A process for the in-situ regeneration of a zeolite catalyst in a carbonylation process for the production of at least one of methyl acetate and acetic acid by contacting methanol, dimethyl ethyl or dimethyl carbonate with carbon monoxide in the presence of a zeolite catalyst, ceasing contact of the catalyst with the reactant, regenerating the catalyst with a regenerating gas selected from hydrogen or a mixture of hydrogen and carbon monoxide at a temperature in the range 250 to 600° C., terminating the hydrogen regenerating step and resuming contact of the catalyst with the reactant and carbon monoxide. | 12-09-2010 |
20100317888 | CARBONYLATION PROCESS WITH IN SITU REGENERATION OF MORDENITE CATALYST - A process for the carbonylation of dimethyl ether, dimethyl carbonate and/or methanol with carbon monoxide and hydrogen in the presence of a mordenite catalyst to produce at least one of acetic acid and methyl acetate in which process the mordenite catalyst is regenerated in-situ by contacting the catalyst with a regenerating gas comprising a molecular oxygen-containing gas and an inert diluent at a total pressure in the range 1 to 100 bar and wherein the partial pressure of the molecular oxygen-containing gas is such that the temperature of the catalyst is maintained within the range 225 to 325° C. | 12-16-2010 |
20100324332 | CARBONYLATION PROCESS FOR THE PRODUCTION OF ACETIC ACID USING METAL-PINCER LIGAND CATALYSTS - A process for the production of acetic acid by the liquid phase carbonylation of an alcohol and/or a reactive derivative thereof in which there is employed a catalyst comprising a complex of rhodium or iridium with a pincer ligand. | 12-23-2010 |
20120165570 | PROCESS FOR PRODUCING ACETIC ACID AND DIMETHYL ETHER USING A ZEOLITE CATALYST - A process for the production of acetic acid and dimethyl ether by contacting methanol and methyl acetate with a catalyst composition at a temperature in the range 140 to 250° C. wherein the catalyst composition contains a zeolite having a 2-dimensional channel system comprising at least one channel which has a 10-membered ring. | 06-28-2012 |