Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production
The kinetic of the transesterification reaction over the CsXH3−XPW12O40/Fe-SiO2 catalyst prepared using sol-gel and impregnation procedures was investigated in different operational conditions. Experimental conditions were varied as follows: reaction temperature 323–333 K, methanol/oil molar ratio =...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/612712 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832551514790428672 |
|---|---|
| author | Mostafa Feyzi Leila Norouzi Hamid Reza Rafiee |
| author_facet | Mostafa Feyzi Leila Norouzi Hamid Reza Rafiee |
| author_sort | Mostafa Feyzi |
| collection | DOAJ |
| description | The kinetic of the transesterification reaction over the CsXH3−XPW12O40/Fe-SiO2 catalyst prepared using sol-gel and impregnation procedures was investigated in different operational conditions. Experimental conditions were varied as follows: reaction temperature 323–333 K, methanol/oil molar ratio = 12/1, and the reaction time 0–240 min. The H3PW12O40 heteropolyacid has recently attracted significant attention due to its potential for application in the production of biodiesel, in either homogeneous or heterogeneous catalytic conditions. Although fatty acids esterification reaction has been known for some time, data is still scarce regarding kinetic and thermodynamic parameters, especially when catalyzed by nonconventional compounds such as H3PW12O40. Herein, a kinetic study utilizing Gc-Mas in situ allows for evaluating the effects of operation conditions on reaction rate and determining the activation energy along with thermodynamic constants including ΔG, ΔS, and ΔH. It indicated that the CsXH3−XPW12O40/Fe-SiO2 magnetic nanocatalyst can be easily recycled with a little loss by magnetic field and can maintain higher catalytic activity and higher recovery even after being used 5 times. Characterization of catalyst was carried out by using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), N2 adsorption-desorption measurements methods, thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC). |
| format | Article |
| id | doaj-art-18aeab188ff646db88c9f5eb702a17a8 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-18aeab188ff646db88c9f5eb702a17a82025-02-03T06:01:09ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/612712612712Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel ProductionMostafa Feyzi0Leila Norouzi1Hamid Reza Rafiee2Faculty of Chemistry, Razi University, P.O. Box 6714967346, Kermanshah, IranFaculty of Chemistry, Razi University, P.O. Box 6714967346, Kermanshah, IranFaculty of Chemistry, Razi University, P.O. Box 6714967346, Kermanshah, IranThe kinetic of the transesterification reaction over the CsXH3−XPW12O40/Fe-SiO2 catalyst prepared using sol-gel and impregnation procedures was investigated in different operational conditions. Experimental conditions were varied as follows: reaction temperature 323–333 K, methanol/oil molar ratio = 12/1, and the reaction time 0–240 min. The H3PW12O40 heteropolyacid has recently attracted significant attention due to its potential for application in the production of biodiesel, in either homogeneous or heterogeneous catalytic conditions. Although fatty acids esterification reaction has been known for some time, data is still scarce regarding kinetic and thermodynamic parameters, especially when catalyzed by nonconventional compounds such as H3PW12O40. Herein, a kinetic study utilizing Gc-Mas in situ allows for evaluating the effects of operation conditions on reaction rate and determining the activation energy along with thermodynamic constants including ΔG, ΔS, and ΔH. It indicated that the CsXH3−XPW12O40/Fe-SiO2 magnetic nanocatalyst can be easily recycled with a little loss by magnetic field and can maintain higher catalytic activity and higher recovery even after being used 5 times. Characterization of catalyst was carried out by using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), N2 adsorption-desorption measurements methods, thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC).http://dx.doi.org/10.1155/2013/612712 |
| spellingShingle | Mostafa Feyzi Leila Norouzi Hamid Reza Rafiee Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production The Scientific World Journal |
| title | Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production |
| title_full | Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production |
| title_fullStr | Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production |
| title_full_unstemmed | Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production |
| title_short | Kinetic Study on the CsXH3−X PW12O40/Fe-SiO2 Nanocatalyst for Biodiesel Production |
| title_sort | kinetic study on the csxh3 x pw12o40 fe sio2 nanocatalyst for biodiesel production |
| url | http://dx.doi.org/10.1155/2013/612712 |
| work_keys_str_mv | AT mostafafeyzi kineticstudyonthecsxh3xpw12o40fesio2nanocatalystforbiodieselproduction AT leilanorouzi kineticstudyonthecsxh3xpw12o40fesio2nanocatalystforbiodieselproduction AT hamidrezarafiee kineticstudyonthecsxh3xpw12o40fesio2nanocatalystforbiodieselproduction |