This disclosure provides for new catalyst systems and new methods for preparing and using the catalyst systems for generating a trimerization product. In an aspect, the new catalyst systems comprise a chromium carboxylate that is prepared by anhydrous metathesis. In another aspect, the catalyst system comprise a chromium carboxylate that is prepared by anhydrous metathesis and a metal pyrrolide compound. The catalyst systems imparts improved performance and/or reduced catalyst system cost to an olefin trimerization process.
This disclosure provides a process for making transition metal carboxylate compositions by combining in an polar aprotic first solvent a transition metal precursor and a Group 1 or Group 2 metal carboxylate under substantially acid-free and substantially anhydrous conditions, to generate a mixture comprising the transition metal carboxylate composition. Optionally, the transition metal carboxylate composition can be purified, for example, by substantially removing the first solvent provide a residue comprising the transition metal carboxylate composition, and also optionally, further by extracting the transition metal carboxylate composition from the residue with a non-coordinating second solvent to provide an extract comprising the transition metal carboxylate composition.
Metal-containing active carbon and method for making same
申请人:Standard Oil Company (Indiana)
公开号:US04482641A1
公开(公告)日:1984-11-13
A high surface area, porous active carbon matrix containing a substantially uniform dispersion of a metal or metal-containing material and a method for making the same are disclosed.
Metal-containing active carbon and methods for making and using same
申请人:Standard Oil Company (Indiana)
公开号:US04518488A1
公开(公告)日:1985-05-21
A high surface area, porous active carbon matrix containing a substantially uniform dispersion of a metal or metal-containing material and methods for making and using the same are disclosed.
Catalytic reactions for the hydrogenation of alkenyl, alkynyl, aryl, cyano, imino, carbonyl and carboxyl groups and for the synthesis of ammonia are disclosed.