in ammonia dissoln. of finely powd. Ca citrate (from lemon juice and Ca(OH)2) in H2O containing NH3; addn. of Na2SO4 with vigorous stirring at temp. <30°C; filtration; evapn.; crystn.;;
参考文献
Gmelin Handbook: Na: SVol.4, 39, page 1453 - 1455
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Glaeser, W.
Patent: US1491390 , 1924 ;
C. II, 1924 , p. 1270
→
反应条件
in neat (no solvent) Kinetics; byproducts: CO2, SO2; heating a pressed mixt. of Na2SO4 and carbide (molar ratio 1:2, 1:1 and 2:1) in a stream of O2 at 1200 K for 20 h;; quenching in air; SEM, EDAX, X-ray diffraction and chem. anal.;
参考文献
Mobin, M.; Malik, A. U.
Journal of the Less-Common Metals, 1991 , vol. 170, p. 243 - 254
→
反应条件
carbon in neat (no solvent) prepn. of aluminium oxide by calcination of bauxite with Na2SO4 and coal; reaction of the mixture with H2S after precipitation by alum earth forming Na2S and NaHS;;
参考文献
Gmelin Handbook: Na: MVol., 147, page 471 - 473
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Clemm
Patent: DE185030 , 1906 ;
