Direct synthesis of single-phase α-CaSO<sub>4</sub>·0.5H<sub>2</sub>O whiskers from waste nitrate solution

Shuang Shao; Baozhong Ma; Yongqiang Chen; Wenjuan Zhang; Bao Liu; Peng Xing; Chengyan Wang

doi:10.1016/j.cjche.2020.04.005

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Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution

Communications | Updated：2026-01-06

- Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution
- Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution
- 中国化学工程学报（英文版） 2020年第6期页码：1752-1754
- Affiliations：
  
  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing,Beijing,China,100083
  2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing,Beijing,China,100083
  3. Department of Materials Engineering, The University of British Columbia,, BC,Vancouver,Canada,V6T 1Z4
- Author bio：
- Funds：
  
  This work was supported by the Beijing Natural Science Foundation of China (2182040), the National Natural Science Foundation of China (51674026, U1802253), the Fundamental Research Funds for the Central Universities (FRF-TT-19-001), and the China Scholarship Council (201906465004).
- DOI：10.1016/j.cjche.2020.04.005
  中图分类号：
- 纸质出版：2020
- Accepted：
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Shuang Shao, Baozhong Ma, Yongqiang Chen, 等. Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution[J]. 中国化学工程学报（英文版）, 2020,(6):1752-1754. DOI: 10.1016/j.cjche.2020.04.005.

Shuang Shao, Baozhong Ma, Yongqiang Chen, et al. Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution[J]. Chinese Journal of Chemical Engineering, 2020, (6): 1752-1754. DOI: 10.1016/j.cjche.2020.04.005.
Shuang Shao, Baozhong Ma, Yongqiang Chen, 等. Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution[J]. 中国化学工程学报（英文版）, 2020,(6):1752-1754. DOI: 10.1016/j.cjche.2020.04.005. DOI：

Shuang Shao, Baozhong Ma, Yongqiang Chen, et al. Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution[J]. Chinese Journal of Chemical Engineering, 2020, (6): 1752-1754. DOI: 10.1016/j.cjche.2020.04.005. DOI：

摘要

Abstract

Single-phase α-CaSO

·0.5H

O whiskers were directly synthesized from waste Ca(NO

)

solution using a hydrothermal method

and HNO

was synchronously regenerated. The effects of reaction temperature and Ca

concentration on the phase composition and morphology of products were determined by X-ray diffraction and optical microscopy. On the basis of the experimental results

the formation diagram of α-CaSO

·0.5H

O was plotted within the range of 5-35 g·L

-1

and 115℃-150℃. In addition

the conditions of the direct synthesis of α-CaSO

·0.5H

O were determined. Well-crystallized

single-phase α-CaSO

·0.5H

O whiskers with high aspect ratios (length

1785 μm; diameter

10.63 μm; aspect ratio

168) and HNO

(70.25 g·L

-1

) were obtained at the optimal conditions of 25 g·L

-1

and 125℃.

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DOI：10.1016/j.cjche.2020.04.005

摘要

Abstract

关键词

Keywords

references

Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution

Direct synthesis of single-phase α-CaSO₄·0.5H₂O whiskers from waste nitrate solution