Shell Oil Comapny

Cytec Technology Corporation

Shell Internationale Research Maatschappij, B.v.

Eduardo Alberto Kamenetzky

James Donald Carruthers

Matthew Dean Soderstrom

Troy Allan Bednarski

Douglas Harris

Violina Antoneta Cocalia

Andrew Michael Cameron

Peter J Achorn

Doug Harris

Andrew Cameron

Peter John Achorn

Provided herein are processes for recovering metal present at low concentration from an acidic aqueous solution, including contacting the acidic aqueous solution with an organic phase solution including one or more 5-(Cto Calkyl)-2-hydroxyaryloxime, thereby extracting at least part of the metal from the acidic aqueous phase; increasing or maintaining the concentration of metal in the organic phase solution by recycling a portion of the organic phase solution containing the metal and contacting the organic phase with an acidic aqueous solution containing the metal; contacting the organic phase solution containing metal with an aqueous phase strip solution comprising an inorganic compound that back-extracts the metal, thereby stripping at least part of the metal from the organic phase solution to the aqueous phase strip solution; and separating the metal from the aqueous phase strip solution, thereby recovering the metal.

Processes for recovering metals from aqueous solutions

Provided herein are processes for recovering molybdenum and/or other value metals (e.g., uranium) present in aqueous solutions from a large range of concentrations: from ppm to grams per liter via a solvent extraction process by extracting the molybdenum and/or other value metal from the aqueous solution by contacting it with an organic phase solution containing a phosphinic acid, stripping the molybdenum and/or other value metal from the organic phase solution by contacting it with an aqueous phase strip solution containing an inorganic compound and having a &#x2266;1.0 M concentration of free ammonia, and recovering the molybdenum and/or other value metal by separating it from the aqueous phase strip solution. When the molybdenum and/or other value metal are present only in low concentration, the processes can include an organic phase recycle step and/or an aqueous phase strip recycle step in order to concentrate the metal prior to recover.

A process for treating a hydrocarbonaceous material comprising contacting such material with catalysts made from a newly discovered phase of aluminum trihydroxide.

Process for treating hydrocarbonaceous material with aluminum trihydroxide catalyst

Catalysts made from a newly discovered phase of aluminum trihydroxide and processes for making such catalysts. This invention also relates to a method for improving the activity of and for regenerating catalysts having a silica-alumina support.

Catalysts made from a new aluminum trihydroxide phase and method of making

A phase of aluminum trihydroxide and supports and catalysts made therefrom. This invention also relates to methods of producing this phase of aluminum trihydroxide and catalysts made therefrom, and to a method for improving the activity of and for regenerating catalysts having a silica-alumina support.

Growing community of inventors

Stamford, CT, United States of America

Eduardo Alberto Kamenetzky