Thermal decomposition of basic copper carbonate,CuCO3 · Cu(OH)2 · H2O,in carbon dioxide atmosphere (0–50 atm) |
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| Authors: | Hiroshi Henmi Toru Hirayama Nobutasu Mizutani Masanori Kato |
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| Affiliation: | Department of Industrial Chemistry, School of Engineering, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa-pre. 259-12 Japan;Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology, O-okayama, Megro-ku, Tokyo 152 Japan |
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| Abstract: | The thermal decomposition of basic copper carbonate, CuCO3 · Cu(OH)2 · H2O, was studied by high-pressure DTA under high-pressure carbon dioxide (0–50 atm).The DTA-TG measurement in air showed that the peak temperature was influenced more by heating rate than by sample weight.Decomposition via dehydration and decarbonation was rapidly finished in a single step, and no intermediate was found. The decomposition temperature was strongly influenced by the partial pressure of carbon dioxide. The decomposition temperature increased in the range 0 atm < Pco2 < 7 atm, but was nearly constant above Pco2 = 7 atm. Explaining these phenomena was approached by various considerations. |
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