应用化学 ›› 1992, Vol. 0 ›› Issue (1): 72-75.
• 研究简报 • 上一篇 下一篇
廖晓垣, 刘方, 刘增辉
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Liao Xiaoyuan, Liu Fang, Liu Zenghui
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摘要： 我国硝石矿很少,硝酸钠主要靠合成法生产,即用纯碱(或烧碱)溶液吸收硝酸"尾气"而得:Na2CO3+2N0+O2→NaNO3+NaNO2+CO2(1)由于硝酸尾气数量有限,"两碱"又是紧俏的化工原料,因而硝酸钠供应紧张。
关键词: 硝酸钠, 转化法, 复分解法
Abstract: In order to find an economical way to prepare sodium nitrate studies have been carried out on the reciprocal system Na+-NH4+-Cl--NO3--H2O.Though the salt-pair of NaNO3-NH4Cl is a stable one,as the phase diagram shows, it is difficult to obtain pure NaNO3 and NH4Cl from it,for the solubilities of NaNO3 and NH4Cl vary with temperature almost in the same extent. A certain sort of optimum conditions has been approached at which the crystal of NaNO3 is more heavy with that of NH4Cl suspending in the solution, thus NaNO3 can be easily separated from NH4Cl.
Key words: sodium nitrate, common salt, double decomposition, transformation
廖晓垣, 刘方, 刘增辉. 由氯化钠制硝酸钠的转化法研究[J]. 应用化学, 1992, 0(1): 72-75.
Liao Xiaoyuan, Liu Fang, Liu Zenghui. PREPARATION OF SODIUM NITRATE FROM COMMON SALT AND AMMONIUM NITRATE BY DOUBLE DECOMPOSITION TRANSFORMATION[J]. Chinese Journal of Applied Chemistry, 1992, 0(1): 72-75.
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