in inert gas at 200-400°C; quant. reaction requires a fourfold excess of NH4Cl;
参考文献
Kiess, N. H.
Journal of Research of the National Bureau of Standards, Section A: Physics and Chemistry, 1963 , vol. 67, p. 343 - 345
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Gmelin Handbook: Sc: MVol.C1, 2.4.3.3.9.7, page 215 - 216
carbon in gas byproducts: CO; by chlorination-chem. vapor transport react.; mixt. of Er2O3 and La2O3 with carbon and KCl (1:1:6:1 at. ratio) placed in alumina reactor and chlorinated with dry Cl2 (20 cm**3/min) at 800 K for 2 h; gas replace by Ar:Cl2 at 800-1300 K; detn. of separation factor;
参考文献
Journal of Alloys and Compounds, , vol. 413, # 1-2 p. 175 - 180
Journal of Alloys and Compounds, , vol. 509, # 30 p. 7993 - 7997
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反应条件
in neat (no solvent) Al2Cl6 prepd. from Al and Cl2; in Duran tube, at 500°C (Cl2); chemical vapour phase transport with Al2Cl6 from 500 to 400°C, 24 h;
参考文献
Gunsilius, H.; Urland, W.; Kremer, R.
Zeitschrift fuer Anorganische und Allgemeine Chemie, 1987 , vol. 550, p. 35 - 40
in neat (no solvent) absence of moisture; large excess AlCl3, evacuated quartz tube, 573 K; fractional sublimation over 450 to 650 K gradient, removal of residual AlCl3 on heating in Cl2/N2 stream;
