Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation Activity
La1-xSrxAlO3 (x=0 to 0.4) perovskite materials were synthesized by the reverse strike co-precipitation method and their soot oxidation activity was evaluated. All the catalysts synthesized were characterized using XRD, BET specific surface area, FESEM and XPS techniques. As analyzed by XRD, La1-xSrx...
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2019-08-01
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doaj-6e9b70c10f8e4ac7b133d990d8d1c88a2021-01-23T19:50:44ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering 1021-99861021-99862019-08-01384697732192Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation ActivitySatya deepika Neelapala0Naveen lAshok Yaranal1Harshini Dasari2Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Karnataka, 576104, INDIADepartment of Chemical Engineering, Indian Institute of Technology, Guwahati, Assam, 781039, INDIADepartment of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Karnataka, 576104, INDIALa1-xSrxAlO3 (x=0 to 0.4) perovskite materials were synthesized by the reverse strike co-precipitation method and their soot oxidation activity was evaluated. All the catalysts synthesized were characterized using XRD, BET specific surface area, FESEM and XPS techniques. As analyzed by XRD, La1-xSrxAlO3 perovskite from x=0 to 0.35 showed the formation of the rhombohedralphase, while for La0.6Sr0.4AlO3 sample the secondary phases SrO, La2O3, and Al2O3 were also noticed. Sr-doped samples exhibited higher BET specific surface area when compared to pure LaAlO3. FESEM analysis showed that there is a change in morphology upon doping of Sr into LaAlO3 lattice. The O1s spectra observed from XPS analysis showed that the La0.75Sr0.25AlO3 sample contained higher amounts of adsorbed oxygen. La, Sr, and Al existed in +3, +2 and +3 oxidation states respectively in all the synthesized samples as confirmed by XPS. Soot oxidation activity tests showed that La0.75Sr0.25AlO3 exhibited higher catalytic activity relative to other catalysts due to the enhanced amount of reactive adsorbed oxygen species.http://www.ijcce.ac.ir/article_32192_514ad685a2cbade92aa2566f7305deb1.pdfsr-doped laalo3reverse strike co-precipitation synthesissoot oxidationoxygen vacancies |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Satya deepika Neelapala Naveen lAshok Yaranal Harshini Dasari |
spellingShingle |
Satya deepika Neelapala Naveen lAshok Yaranal Harshini Dasari Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation Activity Iranian Journal of Chemistry & Chemical Engineering sr-doped laalo3 reverse strike co-precipitation synthesis soot oxidation oxygen vacancies |
author_facet |
Satya deepika Neelapala Naveen lAshok Yaranal Harshini Dasari |
author_sort |
Satya deepika Neelapala |
title |
Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation Activity |
title_short |
Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation Activity |
title_full |
Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation Activity |
title_fullStr |
Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation Activity |
title_full_unstemmed |
Synthesis of La1-xSrxAlO3 Perovskites by Reverse Strike Co-Precipitation Method and Its Soot Oxidation Activity |
title_sort |
synthesis of la1-xsrxalo3 perovskites by reverse strike co-precipitation method and its soot oxidation activity |
publisher |
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
series |
Iranian Journal of Chemistry & Chemical Engineering |
issn |
1021-9986 1021-9986 |
publishDate |
2019-08-01 |
description |
La1-xSrxAlO3 (x=0 to 0.4) perovskite materials were synthesized by the reverse strike co-precipitation method and their soot oxidation activity was evaluated. All the catalysts synthesized were characterized using XRD, BET specific surface area, FESEM and XPS techniques. As analyzed by XRD, La1-xSrxAlO3 perovskite from x=0 to 0.35 showed the formation of the rhombohedralphase, while for La0.6Sr0.4AlO3 sample the secondary phases SrO, La2O3, and Al2O3 were also noticed. Sr-doped samples exhibited higher BET specific surface area when compared to pure LaAlO3. FESEM analysis showed that there is a change in morphology upon doping of Sr into LaAlO3 lattice. The O1s spectra observed from XPS analysis showed that the La0.75Sr0.25AlO3 sample contained higher amounts of adsorbed oxygen. La, Sr, and Al existed in +3, +2 and +3 oxidation states respectively in all the synthesized samples as confirmed by XPS. Soot oxidation activity tests showed that La0.75Sr0.25AlO3 exhibited higher catalytic activity relative to other catalysts due to the enhanced amount of reactive adsorbed oxygen species. |
topic |
sr-doped laalo3 reverse strike co-precipitation synthesis soot oxidation oxygen vacancies |
url |
http://www.ijcce.ac.ir/article_32192_514ad685a2cbade92aa2566f7305deb1.pdf |
work_keys_str_mv |
AT satyadeepikaneelapala synthesisofla1xsrxalo3perovskitesbyreversestrikecoprecipitationmethodanditssootoxidationactivity AT naveenlashokyaranal synthesisofla1xsrxalo3perovskitesbyreversestrikecoprecipitationmethodanditssootoxidationactivity AT harshinidasari synthesisofla1xsrxalo3perovskitesbyreversestrikecoprecipitationmethodanditssootoxidationactivity |
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