Low Pressure Catalytic Combustion of Hydrogen on Palladium

Xi Wang¹, Yixiang Shi^1*, Ningsheng Cai¹, Xiaocheng Lv², Wei Yao²

¹Key laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing, China.
²China Academy of Space Technology, Zhongguancun Nandajie, Beijing, China.

DOI: 10.4236/jpee.2015.34008                

Abstract

Exhausts of airship fabric bag in the stratosphere such as hydrogen which can be used for fuels by using catalytic combustion method. This can save the extra fuels used in the power system. Pd/γ- Al₂O₃ catalyst was prepared in this work by impregnation method and the H₂ catalytic combustion reaction kinetic was investigated between the pressure of 3.6 kPa and 101.3 kPa. The effects of temperature, pressure and gas composition ratio were studied in the paper. According to the experiment results, the increase of temperature increases the H₂ conversion. The parameter pressure has a positive effect on H₂ reaction kinetics and low concentration of H₂ in mixtures shows better performance. The dependence of temperature on H₂ reaction rate becomes more sensitive in high pressure.

Keywords

Airship, Hydrogen, Catalytic Combustion, Impregnation, Reaction Kinetic

Conflicts of Interest

The authors declare no conflicts of interest.

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