Latest Development on Membrane Fabrication for Natural Gas Purification: A Review
Table 3
Few researches of mixed matrix membranes.
Year
Mixed matrix membrane (MMM)
Observations
Ref.
Organic
Inorganic
1973
Silicon rubber
Molecular sieves
Poor adhesion of organic and inorganic selected leads to poor separation performance. This poor interaction of both materials may result in nonselective voids present at the interface which consequently causes insufficient membrane performance [41–43].
Zeolite like silicalite-1, 13X, and KY have enhanced the separation performance of poorly selective rubbery membrane for the carbon dioxide (CO2) and methane (CH4) mixture.
Selectivity of CO2/CH4 mixture has increased up to 45%. Zeolites loading also affects both gas permeability and gas mixture selectivity. There were also a number of records where permeability increased with selectivity decreased as the zeolites loading was increased [48, 49] and vice versa [42].
Due to low mobility of the polymer chain in glassy polymer such as to prevent them to completely cover the zeolites surface which resulted in void interface [51, 52].