Chevron's gas conversion catalysis-hybrid catalysts for wax-free Fischer-Tropsch synthesis

Syngas conversion offers a potential alternative to flaring or reinjection for monetization of associated gas. However, certain deployment applications disfavor the hydroprocessing infrastructure required to upgrade the linear paraffin wax product for blending or transport. We describe here Chevron's Gas Conversion Catalysis (GCC (TM)) technology, a commercially viable hybrid syngas conversion catalyst comprising both a Fischer-Tropsch active metal and a zeolite component that truncates the Anderson-Schultz-Flory (ASF) distribution to provide a liquid hydrocarbon product without the need for downstream hydroprocessing at high pressure. This paper will focus on catalyst and process development including a discussion on the effect of zeolite properties on product specifications. (C) 2013 Elsevier B.V. All rights reserved.