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过硼酸钙的合成研究

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2010-08-10

Journal: 无机盐工业

Included Journals: ISTIC、PKU

Volume: 42

Issue: 8

Page Number: 24-27

ISSN: 1006-4990

Key Words: 偏硼酸钙;过硼酸钙;硼砂

Abstract: 以硼砂(或硼酸)和氢氧化钙为原料,在m(B2O3)∶m(CaO)=2.3∶ 1和35 ℃条件下,合成偏硼酸钙.自然风干的偏硼酸钙与质量分数为30%的过氧化氢在稳定剂存在下,经反应、过滤及干燥制备出过硼酸钙(CaO·B2O3·nH2O2·mH2O,n为1.5~2.5,m为2~3).SEM分析表明,以硼砂为原料合成的偏硼酸钙晶型更有利于合成过硼酸钙.研究结果表明:在60 ℃及复合稳定剂Q存在的情况下,当液固比(mL/g)为3.5∶ 1、反应40 min时,获得的过硼酸钙中w(B2O3)为28%~29%、w(CaO)为22%~24%、活性氧质量分数大于13.5%、w(Fe)≤ 0.004%.

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