Synthetic inorganic ion-exchange materials. LI. Synthesis, characterization, and thermal decomposition of cubic ammonium molybdate.
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概要
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A crystalline cubic ammonium molybdate (CAM) was synthesized by the reaction of hexaammonium heptamolybdate and HNO<SUB>3</SUB> at 60 °C. The X-ray diffraction pattern showed a body-centered cubic structure with crystal lattice of 12.94±0.005 Å. Ammonia free molybdic acid was not obtained even at high acid concentration. CAM contains both exchangeable and structural ammonium ions. On the basis of chemical and thermal analyses and amount of exchangeable H<SUP>+</SUP>, the empirical formula of the H<SUP>+</SUP> form of CAM referred to [H<SUB>0.68</SUB>(NH<SUB>4</SUB>)<SUB>2</SUB>]O<SUB>1.34</SUB>·14.16MoO<SUB>3</SUB>·6.92H<SUB>2</SUB>O. CAM was found to be stable at relatively high acid concentration and temperature, and was suitable for column operations by grading to the desired mesh size.
- 公益社団法人 日本化学会の論文
著者
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Khan Abdul
Department Cardiac Of Surgery Dow University Of Health Sciences
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Tsuji Masamichi
Department Of Chemical Science Graduate School Of Natural Science And Technology Kanazawa University
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Abe Mitsuo
Department Of Veterinary Anatomy Rakuno Gakuen University School Of Veterinary Medicine
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