Influence of process parameters on enhanced hydrogen generation via semi-methanolysis and semi-ethanolysis reactions of sodium borohydride using phosphoric acid

被引：28

作者：

Saka, Cafer ^{[1
]}

Balbay, Asim ^{[2
]}

机构：

[1] Siirt Univ, Sch Hlth, TR-56100 Siirt, Turkey

[2] Siirt Univ, Fac Engn, TR-56100 Siirt, Turkey

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 57期

关键词：

Sodium borohydride; Phosphoric acid; Semi-methanolysis; Semi-ethanolysis; Hydrogen; POTASSIUM BOROHYDRIDE; H-2; GENERATION; NABH4; HYDROLYSIS; METAL-CATALYSTS; ACETIC-ACID; CO; COBALT; NANOPARTICLE; SUPPORT; REACTOR;

D O I：

10.1016/j.ijhydene.2019.09.172

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 sodium borohydride(NaBH4) semi-methanolysis and semi-ethanolysis reactions to produce hydrogen are investigated using phosphoric acid(H3PO4) for the first time. The NaBH4 concentration, H3PO4 concentration, and temperature parameters on these semi-alcoholysis reactions are evaluated. The normalized hydrogen generation rates (HGRs) obtained from the NaBH4 semi-methanolysis and semi-ethanolysis acidified using 0.5 M H3PO4 are 11684 and 9981 ml min(-1) g(-1), respectively. Moreover, the completion times of these semi-methanolysis and semi-ethanolysis reactions with 0.5 M H3PO4 acid concentration are 0.10 and 0.116 min, respectively. Kinetic studies with the power-law model are evaluated. The activation energies(Ea) obtained for the NaBH4 semi-methanolysis and semi-ethanolysis using 0.5 M H3PO4 are 9.08 and 32.47 kJ mol(-1), respectively. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：30119 / 30126

页数：8

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