High performance mixed matrix membranes incorporating at...

Details High performance mixed matrix membranes incorporating at... High performance mixed matrix membranes incorporating at...

2007-11-08

2011-11-01

Greene, Jason M (Department: 1776)

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

C095S047000, C095S050000, C095S051000, C095S054000, C095S055000, C096S004000, C096S008000, C096S009000, C096S010000, C096S011000, C096S012000, C096S014000, C210S640000, C210S641000, C210S500270, C210S502100, C502S004000, C502S064000

Reexamination Certificate

active

08048198

ABSTRACT:
The present invention discloses a new type of high performance mixed matrix membranes (MMMs) and methods for making and using the same. The MMMs comprise a continuous polymer matrix and at least two types of molecular sieves dispersed therein. The continuous polymer matrix in the MMM contains at least one type of polymer. The MMM in the form of a dense film, asymmetric flat sheet membrane or otherwise prepared exhibits simultaneously improved selectivity and permeability for gas separations compared to polymer membranes made from a continuous polymer matrix without any molecular sieves or with only one type of molecular sieve. MMMs of the present invention are suitable for a wide range of gas, vapor, and liquid separations such as alcohol/water, CO2/CH4, H2/CH4, O2/N2, CO2/N2, olefin/paraffin, iso
ormal paraffins, and other light gases separations.

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