温度对重铬酸铵热分解制备
三氧化二铬的影响

doi:10.11962/1006-4990.2018-0613

Inorganic Chemicals Industry ›› 2019, Vol. 51 ›› Issue (10): 60-63.doi: 10.11962/1006-4990.2018-0613

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Effect of temperature on preparation of chromium oxide by thermal decomposition of ammonium dichromate

Tian Sen1，2，3，Ye Xuemei1，2，3，Feng Haitao1，2，Dong Yaping1，2，Li Wu1，2，Zhang Bo1，2，Li Bo1，2

1.Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources，Qinghai Institutes of Salt Lake，Chinese Academy of Sciences，Xining 810008，China；2.Qinghai Engineering and Technology Research Center of Salt Lake Resources Development；3.University of Chinese Academy of Sciences

Online:2019-10-10 Published:2020-03-06

Abstract

Abstract: Chromium oxide product was obtained by thermal decomposition with ammonium dichromate as raw material pre pared by electrooxidation of ferrochromium in ammonium solution.The effects of thermal decomposition temperature on crystallinity，morphology，particle size and color were studied by X ray diffraction，scanning electron microscope and ultravio let visible spectrophotometer.The results showed that the crystallinity and particle size increased with the increase of thermal decomposition temperature.The spherical chromium oxide with the mass fraction of 99% and particle size of 100 nm was prepared by thermal decomposition at 850 ℃，which presented bright green.

Key words: ammonium dichromate；thermal decomposition；chromium oxide

CLC Number:

TQ136.11

Tian Sen1，2，3，Ye Xuemei1，2，3，Feng Haitao1，2，Dong Yaping1，2，Li Wu1，2，Zhang Bo1，2，Li Bo1，2. Effect of temperature on preparation of chromium oxide by thermal decomposition of ammonium dichromate[J]. Inorganic Chemicals Industry, 2019, 51(10): 60-63.

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Effect of temperature on preparation of chromium oxide by thermal decomposition of ammonium dichromate

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