Metal organic frameworks for removal of compounds from a fluid
Embodiments provide a method of compound removal from a fluid. The method includes contacting one or more metal organic framework (MOF) compositions with a fluid and sorbing one or more compounds, such as CO 2 , H 2 S and condensable hydrocarbons. One or more of CO 2 , H 2 S and condensable hydrocarbons can be sorbed simultaneously or in series. The metal organic framework can be an M-soc-MOF.
1. A method of removing one or more compounds from a fluid, the method comprising:
contacting one or more metal organic framework (MOF) compositions with a fluid, wherein each of the one or more MOF compositions are represented by the formula: M-soc-MOF, wherein M is a metal selected from gallium, iron, scandium, and aluminum, and soc is a square-octahedral topology; and
sorbing H 2 S and one or more condensable hydrocarbons, and optionally CO 2 , from the fluid, wherein the sorbing includes absorbing and the condensable hydrocarbons are selected from ethane, propane, butane, pentane, and hexane.
2. The method of claim 1 , wherein the M-soc-MOF comprises tetradentate organic ligands.
3. The method of claim 2 , wherein the tetradentate organic ligands comprise tetracarboxylate ligands.
4. The method of claim 1 , wherein the M-soc-MOF comprises rectangular planar organic ligands.
5. The method of claim 1 , wherein the M-soc-MOF comprises amidetetracarboxylate or 3,3′,5,5′-azobenzenetetracarboxylate organic ligands.
6. The method of claim 1 , wherein the M-soc-MOF comprises two distinct types of channels.
7. The method of claim 6 , wherein one of the two types of channels is hydrophilic.
8. The method of claim 1 , wherein the M-soc-MOF comprises a plurality of 6-connected trimer molecular building blocks networked by organic ligands.
9. The method of claim 8 , wherein each of the trimer molecular building blocks comprises three metal carboxylate octahedra.
10. The method of claim 9 , wherein each of the metal carboxylate octahedral of a trimer molecular building block are metal-centered and share one central μ 3 -oxo anion.
11. The method of claim 9 , wherein the apical position of each metal carboxylate octahedral is occupied by a terminal water molecule.
12. The method of claim 1 , wherein contacting comprises mixing, bringing in close proximity, chemically contacting, physically contacting or combinations thereof.
13. The method of claim 1 , wherein sorbing further comprises adsorbing.
14. The method of claim 1 , wherein the fluid comprises one or more of natural gas and biogas.
15. The method of claim 1 , wherein the H 2 S and one or more condensable hydrocarbons, and optionally the CO 2 , are sorbed simultaneously.
16. The method of claim 1 , wherein the H 2 S and one or more condensable hydrocarbons, and optionally the CO 2 , are sorbed sequentially.
17. A method of removing one or more compounds from a fluid, the method comprising:
contacting one or more metal organic framework (MOF) compositions with a fluid, wherein each of the one or more MOF compositions are represented by the formula: M-soc-MOF, wherein M is a metal and soc is a square-octahedral topology; and
sorbing two or more of CO 2 , H 2 S, and condensable hydrocarbon sequentially from the fluid, wherein the condensable hydrocarbon includes one or more of ethane, propane, butane, pentane, and hexane.
18. The method of claim 17 , wherein the metal is selected from gallium, iron, scandium, and aluminum.
19. A method of removing one or more compounds from a fluid, the method comprising:
contacting one or more metal organic framework (MOF) compositions with a fluid, wherein each of the one or more MOF compositions are represented by the formula: M-soc-MOF, wherein the metal is selected from gallium, indium, iron, scandium, and aluminum and soc is a square-octahedral topology; and
sorbing two or more of CO 2 , H 2 S, and condensable hydrocarbon sequentially from the fluid, wherein the condensable hydrocarbon includes one or more of ethane, propane, butane, pentane, and hexane.