Exploiting carbon dioxide as a carbon source for the production of value-added hydrocarbons offers a possible solution towards identifying sustainable alternative energy sources.  Once realized, these sources would reduce the reliance on increasingly expensive foreign-produced petroleum.  Previous work in our group has suggested a two-step synthesis approach to producing liquid hydrocarbons from carbon dioxide and hydrogen.  In the first step, a modified iron-supported catalyst is active for the hydrogenation of carbon dioxide to light olefins.  The resulting complex light olefin stream must be further oligomerized to obtain useful liquid hydrocarbons in the second step.  The interest in integrating these two processes has led to designing and testing catalysts within fixed-bed, tubular reactors.  This presentation will discuss the effects of amorphous silica-alumina (ASA) support size, Ni loading by ion exchange and co-precipitation, and process conditions on the overall conversion and selectivity of olefins to C9-C16 liquid hydrocarbons.

Silica-alumina particles as an efficient catalyst support for nickel in fixed-bed ethylene oligomerization

243rd National Meeting (2012)

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