催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (1): 1-2.

• 研究快讯 •    下一篇

室温条件下硝酸羟胺的催化分解

任晓光1,2,李明慧2,王爱琴1,李林1,王晓东1,张涛1   

  1. 1 中国科学院大连化学物理研究所, 辽宁大连 116023; 2 大连轻工业学院, 辽宁大连 116034
  • 收稿日期:2007-01-25 出版日期:2007-01-25 发布日期:2010-08-28

Catalytic Decomposition of Hydroxyl Ammonium Nitrate at Room Temperature

REN Xiaoguang1,2, LI Minghui2, WANG Aiqin1, LI Lin1, WANG Xiaodong1, ZHANG Tao1*   

  1. 1 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2 Dalian Institute of Light Industry, Dalian 116034, Liaoning, China
  • Received:2007-01-25 Online:2007-01-25 Published:2010-08-28

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摘要： 采用等体积浸渍法制备了一系列以Al2O3和SiO2为载体的负载型贵金属催化剂. 用热重法考察了催化剂对80%硝酸羟胺推进剂的分解活性. 结果表明, Ir/SiO2催化剂能够在室温以下(20.7 ℃)催化分解80%硝酸羟胺,显示出该催化体系在环境友好的单组元推进器上具有很大的应用潜力. H2化学吸附实验表明, Ir/SiO2 具有比 Ir/Al2O3更大的Ir颗粒,这可能是造成前者活性比后者高的原因之一.

关键词: 铱, 二氧化硅, 负载型催化剂, 硝酸羟胺, 催化分解, 绿色推进剂

Abstract: A series of alumina- or silica-supported precious metal catalysts have been screened for catalytic decomposition of hydroxyl ammonium nitrate by the thermal analysis method. Ir/SiO2 exhibits the highest catalytic activity, on which 80% hydroxyl ammonium nitrate can be completely decomposed even at 20.7 ℃, manifesting its great potentials as an environmentally benign monopropellant. H2 chemisorption on Ir/SiO2 and Ir/Al2O3 suggests that a large particle size seems to be favorable for this reaction.

Key words: iridium, silica, supported catalyst, hydroxyl ammonium nitrate, catalytic decomposition, green propellant