Cargando…
Decomposition Study of Praseodymium Oxalate as a Precursor for Praseodymium Oxide in the Microwave Field
[Image: see text] Micron-sized praseodymium oxide powders are prepared successfully from the praseodymium oxalate in a microwave field at 750 °C for 2 h in the present study. X-ray diffraction (XRD) analysis demonstrates that the presence of cubic structured crystalline Pr(6)O(11) and complete decom...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7469113/ https://www.ncbi.nlm.nih.gov/pubmed/32905250 http://dx.doi.org/10.1021/acsomega.0c00505 |
_version_ | 1783578360326127616 |
---|---|
author | Lv, Peng Zhang, Liangjing Koppala, Sivasankar Chen, Kaihua He, Yuan Li, Shiwei Yin, Shaohua |
author_facet | Lv, Peng Zhang, Liangjing Koppala, Sivasankar Chen, Kaihua He, Yuan Li, Shiwei Yin, Shaohua |
author_sort | Lv, Peng |
collection | PubMed |
description | [Image: see text] Micron-sized praseodymium oxide powders are prepared successfully from the praseodymium oxalate in a microwave field at 750 °C for 2 h in the present study. X-ray diffraction (XRD) analysis demonstrates that the presence of cubic structured crystalline Pr(6)O(11) and complete decomposition of the precursor are confirmed by Fourier transform infrared (FT-IR) analysis. The scanning electron microscopy (SEM) results show yield powders with the desired particle size and uniform morphologies. Particle size analysis demonstrates that the median diameter (D(50)) becomes stable at 750 °C. The D(50), average surface area, pore diameter, and pore volume calculated by Brunauer −Emmett–Teller (BET) are 4.32 μm, 6.628 m(2)/g, 1.86 nm, and 0.026 cm(3)/g at 750 °C for 2 h, respectively. Moreover, loss on ignition (L.O.I.) analysis indicates that the L.O.I. is as low as 0.39%, meeting the enterprise requirement (<1%). In comparison, conventional calcination experiments are carried out in the electric furnace. Both XRD and FT-IR analyses are in consistence with thermogravimetry–differential scanning calorimetry, which indicates that the temperature required for the decomposition of praseodymium oxalate hydrate is higher than that of microwave heating. Furthermore, SEM, particle size distribution, and BET analysis indicate that agglomeration generates, particle size enlarges, and average surface area increases. In all, it is confirmed that preparing rare-earth oxides from rare-earth oxalates is feasible using microwave heating to replace conventional heating. |
format | Online Article Text |
id | pubmed-7469113 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-74691132020-09-04 Decomposition Study of Praseodymium Oxalate as a Precursor for Praseodymium Oxide in the Microwave Field Lv, Peng Zhang, Liangjing Koppala, Sivasankar Chen, Kaihua He, Yuan Li, Shiwei Yin, Shaohua ACS Omega [Image: see text] Micron-sized praseodymium oxide powders are prepared successfully from the praseodymium oxalate in a microwave field at 750 °C for 2 h in the present study. X-ray diffraction (XRD) analysis demonstrates that the presence of cubic structured crystalline Pr(6)O(11) and complete decomposition of the precursor are confirmed by Fourier transform infrared (FT-IR) analysis. The scanning electron microscopy (SEM) results show yield powders with the desired particle size and uniform morphologies. Particle size analysis demonstrates that the median diameter (D(50)) becomes stable at 750 °C. The D(50), average surface area, pore diameter, and pore volume calculated by Brunauer −Emmett–Teller (BET) are 4.32 μm, 6.628 m(2)/g, 1.86 nm, and 0.026 cm(3)/g at 750 °C for 2 h, respectively. Moreover, loss on ignition (L.O.I.) analysis indicates that the L.O.I. is as low as 0.39%, meeting the enterprise requirement (<1%). In comparison, conventional calcination experiments are carried out in the electric furnace. Both XRD and FT-IR analyses are in consistence with thermogravimetry–differential scanning calorimetry, which indicates that the temperature required for the decomposition of praseodymium oxalate hydrate is higher than that of microwave heating. Furthermore, SEM, particle size distribution, and BET analysis indicate that agglomeration generates, particle size enlarges, and average surface area increases. In all, it is confirmed that preparing rare-earth oxides from rare-earth oxalates is feasible using microwave heating to replace conventional heating. American Chemical Society 2020-08-21 /pmc/articles/PMC7469113/ /pubmed/32905250 http://dx.doi.org/10.1021/acsomega.0c00505 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Lv, Peng Zhang, Liangjing Koppala, Sivasankar Chen, Kaihua He, Yuan Li, Shiwei Yin, Shaohua Decomposition Study of Praseodymium Oxalate as a Precursor for Praseodymium Oxide in the Microwave Field |
title | Decomposition Study of Praseodymium Oxalate as a Precursor
for Praseodymium Oxide in the Microwave Field |
title_full | Decomposition Study of Praseodymium Oxalate as a Precursor
for Praseodymium Oxide in the Microwave Field |
title_fullStr | Decomposition Study of Praseodymium Oxalate as a Precursor
for Praseodymium Oxide in the Microwave Field |
title_full_unstemmed | Decomposition Study of Praseodymium Oxalate as a Precursor
for Praseodymium Oxide in the Microwave Field |
title_short | Decomposition Study of Praseodymium Oxalate as a Precursor
for Praseodymium Oxide in the Microwave Field |
title_sort | decomposition study of praseodymium oxalate as a precursor
for praseodymium oxide in the microwave field |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7469113/ https://www.ncbi.nlm.nih.gov/pubmed/32905250 http://dx.doi.org/10.1021/acsomega.0c00505 |
work_keys_str_mv | AT lvpeng decompositionstudyofpraseodymiumoxalateasaprecursorforpraseodymiumoxideinthemicrowavefield AT zhangliangjing decompositionstudyofpraseodymiumoxalateasaprecursorforpraseodymiumoxideinthemicrowavefield AT koppalasivasankar decompositionstudyofpraseodymiumoxalateasaprecursorforpraseodymiumoxideinthemicrowavefield AT chenkaihua decompositionstudyofpraseodymiumoxalateasaprecursorforpraseodymiumoxideinthemicrowavefield AT heyuan decompositionstudyofpraseodymiumoxalateasaprecursorforpraseodymiumoxideinthemicrowavefield AT lishiwei decompositionstudyofpraseodymiumoxalateasaprecursorforpraseodymiumoxideinthemicrowavefield AT yinshaohua decompositionstudyofpraseodymiumoxalateasaprecursorforpraseodymiumoxideinthemicrowavefield |