Kinetics study on the generation of hydrogen from an aluminum/water system using synthesized aluminum hydroxides

被引:23
作者
Wen, Yu-Chieh [1 ]
Huang, Wei-Min [1 ]
Wang, Hong-Wen [1 ]
机构
[1] Chung Yuan Christian Univ, Dept Chem, Zhongli 320, Taiwan
关键词
Al(OH)(3); ball-mixing; hydrogen generation; AL POWDER; WATER; TEMPERATURE; AL(OH)(3); CORROSION; ENERGY;
D O I
10.1002/er.3955
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Kinetics study on the generation of hydrogen from an Al/water system is performed. The reaction is affected by three major factors such as the concentration of hydroxyl ions (pH values), catalysts, and temperature. However, these factors are interacted and sometimes difficult to separate. This study demonstrates how these factors affect the generation of hydrogen in an Al/water system. Aluminum hydroxide, Al(OH)(3) (bayerite phase), synthesized using a chemical solution method, is proved to be a very effective catalyst for the reaction of Al and water. Approximately 95% yield (1300mL) of hydrogen is produced from 1g Al in 10mL water using 3g Al(OH)(3) catalyst at room temperature within 1minute. The generation rate of hydrogen is accelerated due to the catalyst Al(OH)(3) and the exothermic heat. In this report, a ball-mixing process, the ratio of Al:Al(OH)(3):H2O, and the reacting temperatures are investigated to clarify the effect of catalyst Al(OH)(3). The synthesized Al(OH)(3) catalyst is found to reduce the activation energy of Al/water reaction from 158kJ/mol to 73.3 similar to 76.9kJ/mol. The roles of hydroxyl ions (ie, pH values), temperature, and catalyst on this phenomenal reaction are explained using a kinetics study and the concept of Fick first law. The 3 factors all improve the flux of hydroxyl ions through the passive Al2O3 layer; therefore, the generation of hydrogen is enhanced.
引用
收藏
页码:1615 / 1624
页数:10
相关论文
共 30 条
  • [1] Aluminium electrodeposition under ambient conditions
    Abbott, Andrew P.
    Harris, Robert C.
    Hsieh, Yi-Ting
    Ryder, Karl S.
    Sun, I-Wen
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, 16 (28) : 14675 - 14681
  • [2] A novel method for generating hydrogen by hydrolysis of highly activated aluminum nanoparticles in pure water
    Alinejad, Babak
    Mahmoodi, Korosh
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (19) : 7934 - 7938
  • [4] Hydration of passive oxide films on aluminum
    Bunker, BC
    Nelson, GC
    Zavadil, KR
    Barbour, JC
    Wall, FD
    Sullivan, JP
    Windisch, CF
    Engelhardt, MH
    Baer, DR
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (18) : 4705 - 4713
  • [5] Chaklader A., 2002, [No title captured], Patent No. [WO 2002014213, 2002014213]
  • [6] Chaklader A., 2002, [No title captured], Patent No. [US 0048548 A1, 0048548]
  • [7] Research of hydrogen generation by the reaction of Al-based materials with water
    Chen, Xingyu
    Zhao, Zhongwei
    Hao, Mingming
    Wang, Dezhi
    [J]. JOURNAL OF POWER SOURCES, 2013, 222 : 188 - 195
  • [8] Physicochemical mechanism for the continuous reaction of γ-Al2O3-modified aluminum powder with water
    Deng, Zhen-Yan
    Ferreiraw, Jose M. F.
    Tanaka, Yoshihisa
    Ye, Jinhua
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (05) : 1521 - 1526
  • [9] Temperature effect on hydrogen generation by the reaction of γ-Al2O3-modified Al powder with distilled water
    Deng, ZY
    Liu, YF
    Tanaka, Y
    Zhang, HW
    Ye, JH
    Kagawa, Y
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2005, 88 (10) : 2975 - 2977
  • [10] Modification of Al particle surfaces by γ-Al2O3 and its effect on the corrosion behavior of Al
    Deng, ZY
    Liu, YF
    Tanaka, Y
    Ye, JH
    Sakka, Y
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2005, 88 (04) : 977 - 979