PROCESS FOR THE PREPARATION OF HYDROCARBONS, AND HYDROCARBONS SO PREPARED

摘要

A process for the preparation of an aromatic hydrocarbon mixture, in which a mixture of carbon monoxide and hydrogen with an H2/CO molar ratio between 0.25 and 0.75 is contacted with a mixture of two catalysts of which one (A) is capable of catalysing the conversion of an H2/CO mixture into acyclic oxygen-containing hydrocarbons and the outer (B) is a crystalline silicate, (A) contains zinc and chromium and the composition of B expressed in moles of the oxides, is as follows: y(1.0 +/- 0.3)M2/nO . y(a Fe2O3 . b Al2O3) . SiO2, wherein M = H and alkali metal or alkaline-earth metal; n = the valency of M; O < y /= O; b >/= o, and a + b = 1; An amount of water is added to the H2/CO mixture which - in %mo l based on the H2/CO mixture - is at least 2.5 and at most $wherein:\; R\; =\; the\; H2/CO\; molar\; ratio\; of\; the\; feed,\; and\; V\; =\; the\; consumption\; ratio\; of\; the\; H2/CO\; mixture\; obtained\; under\; the\; conditions\; at\; which\; the\; above-mentioned\; process\; is\; carried\; out,\; but\; without\; water\; addition.\; The\; process\; is\; carried\; out\; at\; a\; temperature\; of\; 200-500\; DEG\; C,\; a\; pressure\; of\; 1-150\; bar\; and\; a\; space\; velocity\; of\; 50-5000\; NI\; gas/I\; catalyst/h.$