Document Type
Patent
Publication Date
May 2014
Patent Number
8716170
Abstract
An eggshell catalyst useful for a Fischer-Tropsch (FT) synthesis or other reactions comprises a homogeneously dispersed transition metal and a promoter situated in an active phase in a precisely selected outer region of a catalyst pellet. The active phase region is controlled to a specific depth, which permits the control of the catalysts selectivity, for example, the size of the hydrocarbon chains formed in the FT process. A method of preparing these eggshell catalysts involves a non-aqueous synthesis where polar and non-polar solvents of relatively low vapor pressure are employed to define the depth of penetration of metal species in a refractory oxide substrate, which is followed by fixing and activating metallic catalytic species in the structure by calcination of the catalyst particles.
Application Number
13/391,675
Recommended Citation
Wolan, John T. and Gardezi, Ali Syed, "Eggshell catalyst and methods of its preparation" (2014). USF Patents. 109.
https://digitalcommons.usf.edu/usf_patents/109
Assignees
University of South Florida
Filing Date
08/23/2010
Primary/U.S. Class
502/260
