离子交换法合成硫酸钡的研究

doi:10.11962/1006-4990.2019-0475

Abstract

Abstract:

Barium sulfate was synthesized by ion-exchange method,with barium carbonate and potassium sulfate as raw ma-terials.The effects of preparation parameters on the yield of barium sulfate was investigated.X-ray diffraction（XRD）,scan-ning electron microscopy（SEM） and Fourier transform infrared spectroscopy（FTIR） were used to characterize crystalline and morphology.The results showed that the yield of barium sulfate was up to 98.25% under the optimal conditions,such as c（SO₄ ^2-）=0.007 5 mol/L,liquid-solid mass ratio of 800∶1（g/g）,reaction temperature of 30 ℃ and reaction time of 72 h.The obtained barium sulfate was regular flake with crystalline integrity and high purity.

Key words: ion-exchange method, barium sulfate, barium carbonate, potassium sulfate

CLC Number:

TQ132.35

Zhang Peng,Zhang Yu,Duan Jiangfei,Lin Xiaohua. Research on synthesis of barium sulfate by ion-exchange method[J]. Inorganic Chemicals Industry, 2020, 52(5): 40-44.

Figures/Tables 13

References 15

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序号	因素
序号	A 反应温度/℃	B 液固比/（g·g^-1）	C c（SO₄^2-）/（mol·L^-1）
1	20	600∶1	0.005
2	30	800∶1	0.075
3	40	1 000∶1	0.010

序号	因素			转化率/%
序号	A	B	C	转化率/%
1	1	1	1	79.21
2	1	2	2	96.82
3	1	3	3	97.01
4	2	1	2	90.26
5	2	2	3	98.25
6	2	3	1	84.89
7	3	1	3	88.26
8	3	2	1	81.54
9	3	3	2	96.22
K₁	273.04	257.73	245.64
K₂	273.40	276.61	283.30
K₃	266.02	278.12	283.52
R	7.38	20.39	37.88

因素	偏差平方和	自由度	F值	显著度
A	11.542	2	3.61
B	86.054	2	26.89	*
C	317.024	2	99.07	**
误差	3.19	2

晶面	2θ/（°）	结晶度/%	晶面	2θ/（°）	结晶度/%
（111）	22.71	94.95	（211）	31.45	92.83
（021）	25.81	90.99	（140）	42.59	93.72
（210）	26.80	92.13	（212）	42.88	88.41
（121）	28.72	89.37

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Research on synthesis of barium sulfate by ion-exchange method

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