中文摘要：

二硝酰胺铵（ADN）是一种无毒高比冲的单组元推进剂。实现ADN水溶液的高效催化分解对于推力器启动和产生稳定推力起着至关重要的作用。文中采用浸渍法制得不同质量比（10∶0.2,10∶1,10∶5）的Pd-Zn/Al2O3双金属催化剂。利用TGA-DTA和MS-online对相关的催化分解动力学和反应机理进行了研究,同时使用TEM等对催化剂形貌进行了表征。结果表明,Pd-Zn/Al2O3双金属催化剂能够实现ADN的一步分解,微量Zn的加入能起到稳定和分散金属Pd的作用。当Pd和Zn的质量比为10∶0.2时,催化剂具有良好催化活性和稳定性,并且使二硝酰胺铵（ADN）催化分解向生成较高N2含量的方向进行。

英文摘要：

Ammonium dinitramide （ADN） is a non-toxic and high specific impulse monopropellant. Efficiently catalytic decomposition of ADN aqueous solutions is critical for starting-up the thruster and producing the steady thrust. Pd-Zn bimetallic catalysts with the different mass ratio （10 ： 0.2, 10 ： 1 , 10 ： 5 ） were prepared by impregnation method. The decomposition kinetics and reaction mechanics were characterized by TGA-DTA and MS- online. TEM was employed to investigate the relevant morphology of catalyst. The experimental results show that the decomposition of ADN can be completed in one step over the Pd-Zn/Al2O3 bimetallic catalysts, and the addition of minute quantities of Zn can improve the stability and dispersion of Pd over Al2O3. The catalyst with the mass ratio of Pd-Zn 10 ： 0.2 has good activity and stability, over which the decomposition product of ADN is shifted to higher content of N2.