Chemically active ceramic compositions with an hydroxyquinoline moiety
AssigneeSyracuse University
InventorsLawrence L. Tavlarides, Nandu Deorkar
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Abstract
A composite material useful for removing heavy metal ions from solutions such as aqueous waste streams comprises a ceramic inorganic support such as silica gel which is covalently bonded, through a silane coupling agent, to a hydroxyquinoline ligand or such a support which has been reacted with a silylating agent and then on which is deposited a hydroxyquinoline ligand.
Claims18
A composite material suitable for removing heavy metal ions from liquid streams having the formula:
- ##STR16## wherein R.sub.4 is ##STR17## (2) (CH.sub.2).sub.a --NH--[(CH.sub.2).sub.b --NH].sub.c --, and a is an integer from 1-5, b is an integer from 1-10 and c is an integer from 0-10, ##STR18## wherein d is an integer from 2-10;
- at least one of R.sub.1, R.sub.2 and R.sub.3 is SUPPORT-O-;
- and
- other of R.sub.1, R.sub.2 and R.sub.3 are the same or different and are unsubstituted or halosubstituted hydrocarbon chain having 1-5 carbon atoms;
- and
- R.sub.5 is a ligand having the formula:
- ##STR19## wherein R.sub.6, R.sub.7 and R.sub.8 are the same or different and are --H, --CH.sub.3 or --C.sub.2 H.sub.5 ;
- one of R.sub.9 and R.sub.10 is --(CH.sub.2).sub.e --, other of R.sub.9 and R.sub.10 is --H, --CH.sub.3 or --C.sub.2 H.sub.5, and e is an integer from 1-25;
- and
- R.sub.11 is --H, --CH.sub.3 or --C.sub.2 H.sub.5 and R.sub.12 is a hydroxy group or R.sub.11 is a hydroxy group and R.sub.12 is --H;
- and
- wherein said R.sub.5 is linked to said R.sub.4 at either said R.sub.9 or R.sub.10 that is --(CH.sub.2).sub.e -- of said R.sub.5.
A method of making a composite material suitable for removing heavy metal ions from waste streams comprising the step of covalently bonding a ligand to an inorganic ceramic support, said ligand having the formula:
- ##STR20## wherein R.sub.6, R.sub.7 and R.sub.8 are the same or different and are --H, --CH.sub.3 or --C.sub.2 H.sub.5 ;
- one of R.sub.9 and R.sub.10 is --(CH.sub.2).sub.e --R.sub.4 --, the other of R.sub.8 and R.sub.10 is --H, --CH.sub.3 or --C.sub.2 H.sub.5, and e is an integer between 1-25;
- and
- R.sub.11 is --H, --CH.sub.3 or --C.sub.2 H.sub.5 and R.sub.12 is an hydroxy group or R.sub.11 is an hydroxy group and R.sub.12 is --H;
- R.sub.4 is ##STR21## (2) --(CH.sub.2).sub.a --NH--[(CH.sub.2).sub.b --NH].sub.c --, and a is an integer from 1-5, b is an integer from 1-10 and c is an integer from 0-10, ##STR22## d is an integer from 2-10;
- and R.sub.5 is a ligand having the formula:
- ##STR23##
A composite material suitable for removing heavy metal ions from waste streams having the formula:
- ##STR28## wherein at least one of R.sub.13, R.sub.14 and R.sub.15 is SUPPORT-O- and R.sub.16 is unsubstituted or lower alkyl or lower aryl substituted hydrocarbon chain having 1-20 carbon atoms, ##STR29## wherein f is an integer between 0-20 and g is an integer between 1-10;
- and others of R.sub.13, R.sub.14 and R.sub.15 are R.sub.16 ;
- and
- R.sub.17 is a ligand having the formula ##STR30## one of R.sub.19, R.sub.20 and R.sub.21 and R.sub.22 is unsubstituted or lower alkyl substituted hydrocarbon chain having 5-25 carbon atoms;
- and
- other of R.sub.19, R.sub.20 and R.sub.21 and R.sub.22 are the same or different and are --H, --CH.sub.3 or --C.sub.2 H.sub.5 ;
- and
- R.sub.23 and R.sub.24 are same or different and are --H, --CH.sub.3, or --C.sub.2 H.sub.5 ;
- and
- R.sub.18 is an hydroxy group or R.sub.19 is an hydroxy group and R.sub.18 is --H;
- and
- wherein said R.sub.17 is adsorbed on R.sub.16.
A method of preparing a composite material suitable for removing heavy metal ions from solutions, said composite material having the formula:
- ##STR32## wherein at least one of R.sub.13, R.sub.14 and R.sub.15 is SUPPORT-O- and R.sub.16 is unsubstituted or lower alkyl or lower aryl substituted hydrocarbon chain having 1-20 carbon atoms, ##STR33## wherein f is an integer from 0-20 and g is an integer from 1-10;
- and others of R.sub.13, R.sub.14 and R.sub.15 are R.sub.16 ;
- said method comprising the steps of:
- reacting an inorganic ceramic support with a silylating agent under conditions effective to render the surface of said inorganic ceramic support hydrophobic;
- and
- depositing a ligand selected from the group consisting of 7- or 8-hydroxyquinolines and derivatives thereof, said ligand R.sub.17, having the formula:
- ##STR34## one of R.sub.19, R.sub.20 and R.sub.21 and R.sub.22 is unsubstituted or lower alkyl substituted hydrocarbon chain having 5-25 carbon atoms;
- and
- the other of R.sub.19, R.sub.20 and R.sub.21 and R.sub.22 are the same or different and are --H, --CH.sub.3 or --C.sub.2 H.sub.5 ;
- and
- R.sub.23 and R.sub.24 are same or different and are --H, --CH.sub.3, or --C.sub.2 H.sub.5 ;
- and
- R.sub.18 is an hydroxy group or R.sub.19 is an hydroxy group and R.sub.18 is --H;
- and
- wherein said R.sub.17 is adsorbed on R.sub.16.
Dependencies are inferred from the claim text.