Jasur Shukurov Khoshimovich Doct MODELING THE PRODUCTION OF DIMETHYL ETHER FROM NATURAL GAS

Abstract

The study utilizes the Katalco-58 industrial catalyst from Johnson Matthey Catalysts, composed of 13 wt.% Cu/27 wt.% ZnO/60 wt.% Al2O3, in the dehydration of methanol to DME. The catalytic activity of the samples was studied in an apparatus that allows the process to be investigated under steady-state conditions with a high-pressure flow reactor. The phase composition of the samples before and after catalytic tests was determined using a Shimadzu XRD-6000 diffractometer with unfiltered CuKα radiation (λ=1.5418 Å). The porous structure and specific surface area of the samples were identified using the Tristar II (3020) Brunauer-Emmett-Teller method. The specific surface area was determined from nitrogen adsorption isotherms observed at -197°C. The pore volume was determined at a relative pressure of P/P0=0.99. The initial reaction mixture used was a combination of hydrogen and carbon monoxide supplied from cylinders and fed to the reactor. Samples were tested at pressures between 1-5 MPa and temperatures between 220-300°C, in steps of 20°C. Products were analyzed by chromatographic analysis on a "Crystal 5000.2" gas chromatograph. The water content was determined by the Karl Fischer method.