Fast and effective hydrogen production from ethanolysis and hydrolysis reactions of potassium borohydride using phosphoric acid

被引:39
|
作者
Saka, Cafer [1 ]
Balbay, Asim [2 ]
机构
[1] Siirt Univ, Sch Hlth, TR-56100 Siirt, Turkey
[2] Siirt Univ, Fac Engn & Architecture, TR-56100 Siirt, Turkey
关键词
Ethanolysis; Hydrolysis; Phosphoric acid; Potassium borohydride; Hydrogen; SODIUM-BOROHYDRIDE; METAL-CATALYSTS; H-2; GENERATION; ACETIC-ACID; CO-B; METHANOLYSIS; STORAGE; WATER;
D O I
10.1016/j.ijhydene.2018.09.048
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The hydrogen production from potassium borohydride (KBH4) with the ethanolysis and hydrolysis reactions using the phosphoric acid as a catalyst is performed for the first time. KBH4 concentration, phosphoric acid concentration and temperature effects were investigated for the optimum hydrogen production from ethanolysis and hydrolysis reactions of KBH4. The maximum hydrogen production rates in the ethanolysis and hydrolysis reactions with 1 M phosphoric acid are 6423 and 4296 ml min(-1)g(-1), respectively. At the same time, the ethanolysis and hydrolysis reactions with the 1 M acid concentration were completed within 7 and 9 s, respectively. The total conversions obtained for the volume ratio of KBH4/acid of (1:1) were 100%. The power law kinetic model is performed for the kinetic studies. The activation energies for the ethanolysis and hydrolysis reactions of KBH4 using phosphoric acid are found as 2.98 and 2.60 kJ mol(-1). (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:19976 / 19983
页数:8
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