Seminar

Engineering HDR Seminar Series 25, 2012: Synthesis and Characterizations of High Performance Zeolite Membranes for Carbon Dioxide Separation

Ms Yeo Zee Ying, CSPE postgraduate student


Date: 2012-12-26
Time: 11:00 to 12:00
Venue: Engineering Meeting Room 1, 5-4-22


Abstract

There has been increasing demand for the use of natural gas as a more efficient and cleaner fuel. Raw natural gas collected at wellhead as gaseous mixture contains a wide range of compounds in addition to methane, especially CO2. CO2 in the natural gas usually varies from 4 – 50% depending upon the gas source. Thus, separation of CO2 is important in natural gas processing because it favors steel pipe corrosion and can block cryogenic equipment by solidifying at low temperatures. Conventional methods of removing CO2 from natural gas are through absorption and adsorption processes. However, these processes are costly and energy demanding. Alternatively, separation of CO2 from natural gas using membrane is one of the promising approaches due to its operational simplicity, energy efficient, and economically superior as compared to conventional processes. Basically, inorganic membranes such as Zeolite membranes are selected for CO2 separation as compared to polymeric membranes due to their better selectivity, thermal stability and chemical stability. Zeolites are crystalline aluminosilicates with uniform pore structure and minimum channel diameter in the range of 0.3 to 1.0 nm. Theoretically, presence of molecular sized pores make the zeolite effective as shape selective materials for a wide range of separation applications. Thus, a continuous polycryrstalline zeolite film should have great potential over other materials as an effective membrane layer due to its uniform pore structure at the molecular level. The main objective of this research seeks to rationally produce highly selective zeolite membranes for CO2/CH4 separation. Modification of zeolite membrane will be performed in order to obtain higher performance of CO2/CH4 separation. Process study and optimization of the zeolite membrane will also be investigated in this study at the latter stage. 

About the Speaker

Ms Yeo Zee Ying received her Degree in Chemical Engineering (Honours) from Monash University in year 2009. She joined Monash University for postgraduate studies in year 2011 under the supervision of Dr Chai Siang Piao, Assoc. Prof. Zhu Peng Wei and Prof Abdul Rahman Mohamed. Her research in Monash University is focused on the synthesis and characterizations of high performance Zeolite membranes for CO2/CH4 separation.