multiple division

The chemical strategies for preparing magnetic iron oxide nanoparticles are reviewed and generalized in metathesis strategy and pyrolytic decomposition strategy in this paper.

本文对铁的氧化物磁性纳米颗粒的化学制备方法进行了综述,将其归结为复分解和热分解两种策略;总结了近期含铁的氧化物纳米颗粒组装体的研究进展,并对未来的发展做了展望。

The industrial manufacturing technique, the trend of development of neohexene ,and the characteristics of these production technique were reviewed and analyzed in the paper, particularlyabout the selective dimerization of isobutylene and metathesis of βdiisobutylene with ethylene were introduced.

　对新己烯生产技术的现状和今后的发展趋势进行了综述, 分析了由异丁烯和乙烯生产新己烯的技术特征, 讨论了烯烃二聚工艺和催化剂、烯烃复分解工艺及相应的催化剂, 指出了各种工艺的优势和不足。

Patassium Perchlorate is prepared by metathesis using solid of patassium chlorate replaced patassium choride.

采用固体氯酸钾复分解法代替传统的氯化钾复分解法制备高氯酸钾，加适量添加液洗涤高氨酸钾晶体，解决了成品中氯酸根超标的难关，产品质量符合ＺＢＧ１２００５－８７标准一级品要求；整个制备过程不排放母液和洗水，不浓缩，实现了水平衡，较大幅度节约了能源。

The technology and mechanism of solution chemistry of preparation of strontium carbonate by double decomposition from celestite concentrate were investigated.

研究了天青石精矿复分解法制备碳酸锶的工艺及溶液化学作用机理。

The methods are saponification method and double decomposition method.

介绍两种不同的合成硬脂酸稀土稳定剂的方法 ,即皂化法和复分解法 。

The pilot test of H_(2)BO_(3) and NaNO_(3) preparation by double decomposition;

复分解法制备硼酸和硝酸钠中试研究

Analysis of production technology of potassium sulfate by double decomposition;

用复分解法生产硫酸钾工艺分析

Ammonium nitrate and potassium chloride are mainly used as raw materals for the production of agriculture-grade potassium nitrate by double decomposition method.

复分解法生产农用硝酸钾的主要原料一般为硝酸铵和氯化钾。

The research of produce potassium nitrate by using ammonium nitrate (NH 4NO 3) potassium chloride (KCl) as raw materials, the methodology was double decomposition reaction and non-circulation.

研究了以硝酸铵和氯化钾为原料复分解非循环生产硝酸钾的工艺；实验制得了农业级的硝酸钾。