Synthesis, Characterization And Modification Of SAPO-34 Zeolite Membrane For Separation Of CO2 From Binary Gas Mixtures
| dc.contributor.author | Chew, Thiam Leng | |
| dc.date.accessioned | 2019-06-18T02:28:31Z | |
| dc.date.available | 2019-06-18T02:28:31Z | |
| dc.date.issued | 2012-05 | |
| dc.description.abstract | In the present research, silicoaluminophosphate – thirty four (SAPO-34) zeolite membranes were synthesized on -alumina disc support using (1) direct insitu crystallization and (2) microwave (MW) heating. MW heating formed thinner SAPO-34 membrane (thickness of ~ 1.6 m) with narrower zeolite crystal size distribution (~ 0.6 m) in much shortened synthesis time of 2 hours at 200 oC compared to direct in-situ crystallization. The SAPO-34 membranes synthesized using MW heating were modified by ion-exchange process with Mg2+, Ca2+, Sr2+ and Ba2+cations. The membranes were characterized using TEM, XRD, SEM, TGA, EDS, FT-IR and nitrogen adsorption-desorption. The Ba2+-modified SAPO-34 zeolite membrane increased the CO2/CH4, CO2/N2 and CO2/H2 separation selectivity by 240, 217 and 127 % respectively in the equimolar gas mixture permeation and separation. The Ba2+-modified SAPO-34 zeolite membrane was tested for single gas permeation of CO2, CH4, N2, H2. The binary gas permeation and separation of CO2/CH4, CO2/N2 and CO2/H2 was also studied. Response surface methodology (RSM) were used to optimize the process parameters for binary gas permeation and separation of CO2/CH4, CO2/N2 and CO2/H2. Mathematical models, developed based on combined approaches of Maxwell-Stefan formulation and Langmuir isotherm, were able to predict the single gas permeation, binary gas permeation and separation (in terms of permeance and selectivity) through the Ba2+-modified SAPO-34 membrane within an error of 10 %. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/8310 | |
| dc.language.iso | en | en_US |
| dc.publisher | Universiti Sains Malaysia | en_US |
| dc.subject | Modification of SAPO-34 Zeolite membrane | en_US |
| dc.subject | separation of CO2 from binary gas mixtures | en_US |
| dc.title | Synthesis, Characterization And Modification Of SAPO-34 Zeolite Membrane For Separation Of CO2 From Binary Gas Mixtures | en_US |
| dc.type | Thesis | en_US |
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