PREPARATION AND PROPERTIES OF THE MICRO-POWDER PHASE AND A NEW PHASE OF AMMONIUM TETRAMOLYBDATES

ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 7 No. 1 March 1997

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Yin Zhoulan; Chen Qiyuan; Zhang Hengzhong; Zhou Guizhi; Li Yuangao; Zhang Pingmin

(Department of Chemistry; Central South University of Technology; Changsha 410083)

Abstract: The micro powder phase and a new phase of ammonium tetramolybdate were prepared using polyphase ammonium molybdate as the starting material. Their chemical properties were studied by XRD, TG, DSC and chemical quantitative analyses. It was discovered that the composition of the new phase is (NH₄)₂Mo₄O₁₃ and it transforms to the micro powder phase when heated below 280 ℃.

Key words: new phase of ammonium tetramolybdate micro powder phase of ammonium tetramolybdate phase transformation molybdenum

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