Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Organic
Patent
1990-06-22
1992-01-28
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Organic
423 25, B01J 2022
Patent
active
050844300
ABSTRACT:
Compositions of matter are disclosed comprising nitrogen containing hydrocarbons which are modified with at least one of the elements selected from the group consisting of sulfur, phosphorus an arsenic, with the modified hydrocarbons being covalently bonded to trialkoxysilane. These modified hydrocarbons are further covalently bonded to a solid inorganic support such as silica to form a solid complexing agent. The complexing agents are particularly useful in a process of removing and/or concentrating certain ions, such as noble metal ions and other transition metal ions, from solutions thereof admixed with other ions by forming a complex of the desired ion(s) with the complexing agent. The solution preferably flow through a column packed with the complexing agent to form the complex of the desired ion(s). The desired ion(s) are recovered from the column by subsequently flowing a receiving liquid through the column, wherein the receiving liquid is adapted to break the complex and receive ion(s) in solution in the receiving liquid. The receiving ion(s) can then be separated from the receiving liquid if so desired.
REFERENCES:
patent: 4767670 (1988-08-01), Cox et al.
Bradshaw Jerald S.
Bruening Ronald L.
Izatt Reed M.
Tarbet Bryon J.
Brigham Young University
Crellin Terry M.
Garvin Patrick P.
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