Acetylene storage using metal-organic frameworks of the formula M2(2,5-dihydroxyterephthalate)
View Patent ↗This invention provides, but is not limited to, methods of using metal-organic frameworks (MOFs) having repeat units of the formula M 2 (DHTP) (M is a divalent metal ion; DHTP=2,5-dihydroxyterephthalate) for acetylene storage. Also provided are compositions of the same formula and acetylene, e.g., an acetylene storage material comprising [M 2 (DHTP)] n and acetylene.
1. A method of storing acetylene comprising:
(a) obtaining a metal-organic framework (MOF) comprising a repeating unit of the formula M 2 (DHTP), where
M is Co 2+ , Mg 2+ , Mn 2+ , Ni 2+ , Zn 2+ , or a combination of one or more of these metal ions;
DHTP is:
and
(b) combining the MOF with acetylene.
2. The method of claim 1 , where the MOF further comprises one or more solvent molecules.
3. The method of claim 2 , where the solvent is selected from the group consisting of water, N,N′-dimethylformamide and ethanol.
4. The method of claim 1 , where the MOF has a weight percentage at least 90% attributable to repeat units of the formula M 2 (DHTP).
5. The method of claim 1 , where the MOF has a weight percentage at least 95% attributable to repeat units of the formula M 2 (DHTP).
6. The method of claim 1 , where the MOF has a weight percentage at least 99% attributable to repeat units of the formula M 2 (DHTP).
7. The method of claim 1 , where M is Co 2+ .
8. The method of claim 1 , where M is Mg 2+ .
9. The method of claim 1 , where M is Mn 2+ .
10. The method of claim 1 , where the acetylene is substantially HC≡CH.
11. The method of claim 1 , where the acetylene is substantially DC≡CD.
12. An acetylene storage material comprising:
(a) a metal-organic framework (MOF) comprising a repeat unit of the formula M 2 (DHTP), where
M is Co 2+ , Mg 2+ , Mn 2+ , Ni 2+ , Zn 2+ , or a combination of one or more of these metal ions;
DHTP is:
and
(b) acetylene.
13. The acetylene storage material of claim 12 , where the MOF further comprises one or more solvent molecules.
14. The acetylene storage material of claim 13 , where the solvent is selected from the group consisting of water, N,N′-dimethylformamide and ethanol.
15. The acetylene storage material of claim 12 , where the MOF has a weight percentage at least 90% attributable to repeat units of the formula M 2 (DHTP).
16. The acetylene storage material of claim 12 , where the MOF has a weight percentage at least 95% attributable to repeat units of the formula M 2 (DHTP).
17. The acetylene storage material of claim 12 , where the MOF has a weight percentage at least 99% attributable to repeat units of the formula M 2 (DHTP).
18. The acetylene storage material of claim 12 , where M is Co 2+ .
19. The acetylene storage material of claim 12 , where M is Mg 2+ .
20. The acetylene storage material of claim 12 , where M is Mn 2+ .
21. The acetylene storage material of claim 12 , where the acetylene is substantially HC≡CH.
22. The acetylene storage material of claim 12 , where the acetylene is substantially DC≡CD.