Traditional ketalization and esterification reactions are usually catalyzed by concentrated acid in industry.

传统的缩酮化、酯化反应工业上多采用浓硫酸作催化剂.

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Thermal and thermo - oxidative degradation of chitin with ammonium nitrate, ammonium sulfate and concentrated acid were studied.

讨论了硝酸铵 、 硫酸铵和浓硫酸对自制甲壳素热降解和热氧化降解过程的影响.

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Active carbon was prepared from rice hull, which was treated with concentrated acid.

采用稻壳为原料,使用浓硫酸炭化活化稻壳方法制备稻壳活性炭.

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It is found that the new solid catalyst was more effective than concentrated acid.

结果表明新型的催化剂催化效率要远远高于浓硫酸,且产品性能优异,质量稳定.

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To analyze the status of supply & demand, price and imports & exports of Concentrated acid.

分析浓硝酸的市场供需情况 、 价格及进出口情况.

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Bromocyclohexane was synthesized from potassium bromide and cyclohexanol in the presence of concentrated acid in water.

以溴化钾和环己醇为原料,在浓硫酸存在条件下,以水为溶剂合成溴代环己烷.

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The corrosion reason and countermeasure of concentrated acid pump in Tanggang smelter is discussed.

研究唐钢冶炼厂浓酸泵部件腐蚀失效的原因,从工艺改进、部件防护几方面实施防护措施,延长设备的使用寿命.

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The material selection, development and industrial test of LSB 200 - 22 concentrated acid pump are described.

介绍了LSB200-22 型浓酸泵的选材 、 研制和试用等情况.

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The corrosion reason and countermeasure of concentrated acid pump in Guixi Smelter is discussed.

介绍贵溪冶炼厂浓酸泵部件腐蚀失效的原因及防护措施.

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The process of concentrated acid which produced using direct method started in the former Soviet Union.

直硝法生产浓硝酸工艺源至前苏联.

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