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Kinetics study of the Al-water reaction promoted by an ultrasonically prepared Al(OH)$$_{3}$$ suspension

超音波振動した水酸化アルミニウム懸濁液によるアルミニウム・水反応の促進に関する動力学研究

Liang, G.-H.*; Gai, W.-Z.*; Deng, Z.-Y.*; 徐 平光  ; Cheng, Z.*

Liang, G.-H.*; Gai, W.-Z.*; Deng, Z.-Y.*; Xu, P. G.; Cheng, Z.*

Hydrogen is an ideal fuel for fuel cells because its reaction byproduct with oxygen is environmentally benign. To resolve the safe storage and low cost transportation problem, the onsite hydrolysis reaction in water has been recently employed as a new-type portable hydrogen source. Metal Al is thought as a promising hydrogen-generation material due to its relative low price, light atomic weight and abundance in the earth. In order to promote the reaction of Al particles with water and weaken the inhabitation phenomenon of dense passive oxide film on Al surface, the effect of ultrasonically prepared Al(OH)$$_{3}$$ suspension on the kinetics of Al-water reaction was investigated in this paper. It is found that the induction time for the beginning of Al-water reaction decreases and the reaction rate increases with increasing the suspension concentration, volume and temperature, which is ascribed to the exothermic characteristics of Al-water reaction.

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パーセンタイル:39.8

分野:Chemistry, Multidisciplinary

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