Abstract
Superhigh-silica zeolites (SHSZ), including those which contain oxides as additives, are promising new catalysts for preparing aromatic hydrocarbons from non-traditional raw material such as methanol, low molar mass olefins, and a mixture of CO and H/sub 2/. The use of synthesis gas as raw material is of particular interest as it enables aromatic hydrocarbons to be obtained without the requirement to include a highly power-consuming stage like methanol synthesis from CO and H/sub 2/. A description is given of the association of Fe, Co, ZrO/sub 2/ ZnO-Cr/sub 2/O/sub 3/, with SHSZ (type ZSM-5) permitting aromatic hydrocarbons to be obtained directly from CO and H/sub 2/. The literature contains no report of the use of Soviet SHSZ for this purpose. Thus the aromatization of the synthesis gas on SHSZ (Soviet grade) is examined in detail and the composition of the aromatic hydrocarbons produced are defined and the effect of the oxide introduced into the zeolite on the products formed is discussed. 7 references, 1 table.
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