Velocys Technologies Limited

Velocys Corp.

Laura Richard

Sreekala Rugmini

Francis P Daly

Frank Daly

Stephen Claude LeViness

Kai Jarosch

Heinz J Robota

Daniele Leonarduzzi

Diarmid Roberts

Stephen Claude Leviness

Catalyst compositions, methods of making catalysts, and methods of conducting Fischer-Tropsch (FT) reactions are described. It has been discovered that a combination of large crystallite size and high porosity results in catalysts and FT catalyst systems with high stability and low methane selectivity.

Cobalt-containing fischer-tropsch catalysts, methods of making, and methods of conducting fischer-tropsch synthesis

A method for the preparation of a modified catalyst support comprising: (a) treating a bare catalyst support material with an aqueous solution or dispersion of one or more titanium metal sources and one or more carboxylic acids; and (b) drying the treated support, and (c) optionally calcining the treated support. Also provided are catalyst support materials obtainable by the methods, and catalysts prepared from such supports.

Treating of catalyst carrier, fischer-tropsch catalysts and method of preparation thereof

The present disclosure relates to improvements in the design of Fischer-Tropsch catalysts comprising a support and cobalt on the support.

Catalysts

The invention relates to improvements in the design of Fischer-Tropsch catalysts comprising a support and cobalt on the support. A first aspect is the modification of the silica support with at least 11 wt % titania to prevent the formation of cobalt silicates, thereby limiting the deactivation resulting from the silicate formation. A second aspect is the provision of C0Oparticles highly dispersed on the catalyst support with an average particle diameter of the cobalt oxide particle of less than 12 nm in order to improve catalytic activity and selectivity. A third aspect is the deposition of the catalyst precursor on the support by contact with a solution or suspension comprising the catalyst metal precursors and a carboxylic acid, preferably an alpha-hydroxy carboxylic acid in order to minimize the fracturing and fragmentation of the catalyst precursor during the following steps of drying and calcining, thereby preventing the formation of smaller catalyst particles, which should be removed by screening in order to limit pressure drop in the reactor.

The disclosed invention relates to a process for conducting a Fischer-Tropsch reaction, comprising flowing a reactant mixture comprising fresh synthesis gas and tail gas in a microchannel reactor in contact with a catalyst to form at least one hydrocarbon product, the catalyst being derived from a catalyst precursor comprising cobalt and a surface modified catalyst support.

Fischer-Tropsch process

A method for the preparation of a modified catalyst support comprising: (a) treating a catalyst support material with an aqueous solution or dispersion comprising one or more zirconium metal sources, chromium metal sources, manganese metal sources and aluminum metal sources, and one or more polar organic compounds; and (b) drying the treated support, and (c) optionally calcining the treated support. Also provided are catalyst support materials obtainable by the methods, and catalysts prepared from such supports.

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Abingdon, United Kingdom

Laura Richard