00000nam 2200000za 4500 9.841726 CaOODSP 20221107152146 cr ||||||||||| 170816s1974 oncd ob f000 0 eng d CaOODSP eng eng fre n-cn--- M34-20/187E-PDF M34-20/187 Williams, R. J. Catalysts for hydrocracking and refining heavy oils and tars. Part I, The effect of cobalt to molybdenum ratio on hydrodesulphurization and denitrogenation / [electronic resource] : R.J. Williams, R.G. Draper and B.I. Parsons, Fuels Research Centre. Ottawa : Information Canada, 1974. iii, 21 p. : charts Technical bulletin ; TB 186 Cover title. "February, 1974." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. “This report is the first in a series on an investigation of the factors involved in the preparation of effective, low-cost catalysts for the hydrocracking and refining of high-boiling gas-oils and bitumens. Active catalysts of the "cobalt molybdate on alumina" type, containing 3% and 13% combined metal-oxides were prepared by a surface layering technique using a mix-muller. A gradual leveling out, or plateau, of activity for both sulphur and nitrogen removal was observed beginning at, or near, a cobalt to molybdenum atomic ratio of 0.6. The denitrogenation activity of the cobalt molybdate catalysts increased more slowly with the overall concentration of metals than did the desulphurization activity. The effectiveness of the catalysts for sulphur and nitrogen removal was determined with a 650-975°F gas-oil distilled from Athabasca bitumen that had been thermally hydrocracked in a Mines Branch pilot plant. The tests were undertaken at 2000 psi pressure in a bench-scale flow system with bottom feed at a liquid-hourly-space-velocity of 2.0. The results of the study are discussed relative to those observed by others using different methods of catalyst preparation"--Abstract, p. i. Includes abstract in French. gccst Petroleum gccst Processing Draper, R. G. Parsons, B. I. Canada. Natural Resources Canada. Canada. Mines Branch. Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) TB 186 (CaOODSP)9.834857 PDF 1.18 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-187-eng.pdf 300066