Kinetic schemes of chemical transformations and particle morphology upon interaction between Ln2(SO4)3 (Ln = La, Pr, Nd, Sm) and hydrogen

详细信息    查看全文

• 作者：P. O. Andreev ; E. I. Sal鈥檔ikova ; O. V. Andreev…
• 关键词：sulfates ; oxysulfides of rare ; earth elements ; the kinetic scheme of chemical reactions ; particle morphology
• 刊名：Russian Journal of Physical Chemistry A, Focus on Chemistry
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：90
• 期：1
• 页码：25-30
• 全文大小：749 KB
• 参考文献：1.Yu. V. Orlovskii, T. T. Basiev, K. K. Pukhov, et al., J. Luminesc. 125, 201 (2007).CrossRef
  2.Yu. L. Suponitskii, G. M. Kuz鈥檓icheva, and A. A. Eliseev, Russ. Chem. Rev. 57, 209 (1988).CrossRef
  3.A. A. Kirillovich, Extended Abstract of Cand. Sci. (Phys. Math.) Dissertation (Mosc. Eng.-Tech. Inst., Moscow, 1989).
  4.O. Ya. Manashirov, D. K. Satarov, V. B. Smirnov, et al., Neorg. Mater. 29, 1289 (1993).
  5.S. A. Osseni, S. Lechevallier, M. Verelst, et al., J. Mater. Chem. 21, 18365 (2011).CrossRef
  6.E. I. Sal鈥檔ikova, P. O. Andreev, and S. M. Antonov, Russ. J. Phys. Chem. A 87, 1280 (2013).CrossRef
  7.P. O. Andreev, E. I. Sal鈥檔ikova, and A. A. Kislitsyn, Russ. J. Phys. Chem. A 87, 1482 (2013).CrossRef
  8.E. I. Sal鈥檔ikova, D. I. Kaliev, and P. O. Andreev, Russ. J. Phys. Chem. A 85, 2121 (2011).CrossRef
  9.P. O. Andreev, E. I. Sal鈥檔ikova, and I. M. Kovenskii, Inorg. Mater. 50, 1018 (2014).CrossRef
  10.O. V. Andreev, E. I. Sal鈥檔ikova, and D. V. Zhuravskii, Vestn. Tyumen. Univ., No. 3, 215 (2010).
  11.M. V. Belobeletskaya, N. I. Steblevskaya, and M. A. Medkov, Vestn. DVO RAN, No. 5, 33 (2013).
  12.O. V. Andreev, A. A. Vakulin, and K. V. Kiseleva, Materials Science (Tyumen. Gos. Univ., Tyumen鈥? 2013) [in Russian].
  13.O. V. Andreev, A. S. Vysokikh, and V. G. Vaulin, Russ. J. Inorg. Chem. 53, 1320 (2008).CrossRef
  14.O. V. Andreev and O. G. Mikhalkina, Vestn. Omsk. Univ., No. 4, 88 (2012).
  15.R. F. Balabaeva, Vestn. Yarosl. Univ., No. 2, 88 (2012).
  
• 作者单位：P. O. Andreev (1)
  E. I. Sal鈥檔ikova (2) (3)
  O. V. Andreev (3)
  I. M. Kovenskii (1)
  
  1. Tyumen State Oil and Gas University, Tyumen, 625000, Russia
  2. Agrarian State University of Northern Zauralye, Tyumen, 625003, Russia
  3. Tyumen State University, Tyumen, 625003, Russia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1531-863X

文摘

The phase compositions of samples obtained during the treatment of anhydrous sulfates Ln₂(SO₄)₃ (Ln = La, Pr, Nd, Sm) in a stream with an excess of hydrogen in the temperature range of 400 to 1100掳C at exposures of up to 420 min are determined. Kinetic schemes are compiled for the chemical transformations and changes of phase composition of the mixtures in coordinates of temperature and time that have six fields of the phase combinations: Ln₂(SO₄)₃, Ln₂(SO₄)₃ + Ln₂O₂SO₄, Ln₂O₂SO₄, Ln₂O₂SO₄ + Ln₂O₂S, Ln₂O₂S, and Ln₂O₂S + Ln₂O₃. Single-phase samples of Ln₂O₂SO₄ compounds are obtained at temperatures (掳C) of 540鈥?60 (La), 460鈥?20 (Pr), 470鈥?20 (Nd), and 480鈥?20 (Sm). The temperatures (掳C) of Ln₂O₂S compounds are 580鈥?20 (La), 600鈥?00 (Pr), 600鈥?00 (Nd), and 600鈥?00 (Sm). It is shown via electron microscopy that particles of La₂(SO₄)₃ in the shape of cylinders are converted into flakes of Ln₂O₂SO₄, predominantly flat Ln₂O₂S crystallites. Keywords sulfates oxysulfides of rare-earth elements the kinetic scheme of chemical reactions particle morphology