FIELD: alternate fuel production.
SUBSTANCE: invention relates to synthesis of hydrocarbons from CO and H2, in particular to catalysts and methods for preparation thereof in order to carrying out synthesis of hydrocarbons C5 and higher according to Fischer-Tropsch reaction. Method resides in that non-calcined zeolite ZSM-12 in tetraethylammonium-sodium form is subjected to decationation at pH 5-9, after which decationized zeolite (30-70 wt %) is mixed with alumina binder while simultaneously adding cobalt (7.5-11.5 wt %) as active component and modifier, in particular boron oxide (3-5 wt %). Proposed method allows catalyst preparation time to be significantly reduced owing to combining support preparation and deposition of active component and modifier in one stage with required catalytic characteristics preserved. In addition, method is environmentally safe because of lack of waste waters, which are commonly present when active components are deposited using impregnation, coprecipitation, and ion exchange techniques.
EFFECT: reduced catalyst preparation time and improved environmental condition.
1 tbl, 10 ex
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Authors
Dates
2007-03-20—Published
2005-11-01—Filed