Composition and methods
OwnerRobert Raja, Daniel Stewartinventors
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Abstract
A composition comprising: a bulk material; and at least one surface; the bulk material comprising ions of a metal M bonded to one another via linker groups; the surface comprising ions of a metal M′ bonded to one another via linker groups; the metals M and M′ being the same or different; the surface comprising at least one first site A and at least one second, different site B; the site A having a hydroxyl group bonded thereto; the site B being a Lewis acidic site; is described. Methods of forming the composition and the use of the composition as a catalyst, in particular to catalyse reactions in which CO2 is incorporated into the structure of a molecule, in particular a polymer, are also described.
Claims25
A method of forming a polymer, the method comprising polymerising a monomer in the presence of a composition comprising:
- a bulk material having at least one surface, said bulk material functions as a framework or scaffold for the at least one surface
- the bulk material comprising ions of a metal M bonded to one another via linker groups;
- the surface comprising ions of a metal M′ bonded to one another via linker groups;
- the metals M and M′ being the same or different;
- the surface comprising at least one first site A and at least one second, different site B;
- the site A having a hydroxyl group bonded thereto, said site A capable of interacting with a monomer molecule;
- the site B being a Lewis acid site capable of interacting with a monomer molecule;
- wherein the distance d between the site A and site B is such that the monomer molecules can polymerise on the surface to form the polymer.
A method of forming a polymer in which CO2 is incorporated into the structure of the polymer, the method comprising reacting:
- (a) a molecule Y, which is a monomer capable of polymerising to form a polymer in which CO2 is incorporated into the structure of the polymer;
- and
- (b) CO2;
- in the presence of a composition comprising:
- a bulk material having;
- at least one surface, said bulk material functions as a framework or scaffold for the at least one surface
- the bulk material comprising ions of a metal M bonded to one another via linker groups;
- the surface comprising ions of a metal M′ bonded to one another via linker groups;
- the metals M and M′ being the same or different;
- the surface comprising at least one first site A and at least one second, different site B;
- the site A having a hydroxyl group bonded thereto, said site A optionally being capable of interacting with CO2;
- the site B being a Lewis acid site capable of binding a CO2 molecule such that the bound CO2 molecule can react with the monomer molecule Y;
- wherein the distance d between the site A and site B is such that the molecule Y and the bound CO2 react together on the surface to form the polymer.
Dependencies are inferred from the claim text.