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Surface functionalization of metal organic frameworks for mixed matrix membranes

United States Patent

9,597,643
March 21, 2017
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
Mixed Matrix Membrane (MMM) are composite membranes for gas separation and comprising a quantity of inorganic filler particles, in particular metal organic framework (MOF), dispersed throughout a polymer matrix comprising one or more polymers. This disclosure is directed to MOF functionalized through addition of a pendant functional group to the MOF, in order to improve interaction with a surrounding polymer matrix in a MMM. The improved interaction aids in avoiding defects in the MMM due to incompatible interfaces between the polymer matrix and the MOF particle, in turn increasing the mechanical and gas separation properties of the MMM. The disclosure is also directed to a MMM incorporating the surface functionalized MOF.
Albenze; Erik (Bethel Park, PA), Lartey; Michael (Sunyani, GH), Li; Tao (Shanghai, CN), Luebke; David R. (Bethel Park, PA), Nulwala; Hunaid B. (Pittsburg, PA), Rosi; Nathaniel L. (Pittsburgh, PA), Venna; Surendar R. (South Park, PA)
U.S. Department of Energy (Washington, DC)
14/ 519,743
October 21, 2014
GOVERNMENT INTERESTS The United States Government has rights in this invention pursuant to the employer-employee relationship of the Government to the inventors as U.S. Department of Energy employees at the National Energy Technology Laboratory.