in water rapid addn. (stirring) of oxalic acid soln. to neutral soln. of rare earth nitrate (95°C), pptn.; ppt. filtartion, washing, drying to const. weight over satd. NH4Cl at 25°C; thermal anal., differential thermal anal., powder X-ray diffraction;
参考文献
Fuller; Pinkstone
Journal of the less-common metals, 1980 , vol. 70, # 2 p. 127 - 142
in water weighing of Nd2O3; dissolving in HCl; fast addn. of fresh prepared oxalic acid soln. in large excess; pptn., filtration, washing with H2O; drying in air at 80°C for 24h;
参考文献
Ubaldini; Artini; Costa; Carnasciali; Masini
Journal of Thermal Analysis and Calorimetry, 2008 , vol. 91, # 3 p. 797 - 803
in methanol addition of oxalic acid to a solution of ZrCl4 in CH3OH;; washing and drying of the precipitate; Zr content 35.08 percent (calculated 34.80 percent);;
参考文献
Gable
Journal of the American Chemical Society, 1931 , vol. 53, p. 1276
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Gmelin Handbook: Zr: MVol., 148, page 372 - 374
hydrogenchloride; nitric acid in hydrogenchloride; nitric acid byproducts: H2O; addn. of soln. of zirconium compd. in aq. HNO3 to 10 M HCl, addn. of naphthalene deriv., addn. of oxalic acid; UV monitoring;
参考文献
Zhai, Qing-Zhou
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2008 , vol. 71, # 2 p. 332 - 335
in water dropwise addn. of soln. of oxalic acid (2.2 M) to soln. of Zr salt (80°C, stirring) to pH 1.1 - 1.4; pptn.; filtration, drying overnight (120°C);
参考文献
Kaddouri; Mazzocchia; Tempesti; Anouchinsky
Journal of Thermal Analysis and Calorimetry, 1998 , vol. 53, # 1 p. 97 - 109
