海绵负载Co-B催化剂催化硼氢化钠水解制氢性能研究

doi:10.19964/j.issn.1006-4990.2023-0137

摘要/Abstract

摘要：

采用浸渍-还原法制备了聚乙烯醇缩甲醛（PVFM）海绵负载的Co-B/PVFM催化剂，考察了硼氢化钠浓度、氢氧化钠浓度及反应温度对其催化硼氢化钠水解制氢性能的影响。结果表明，制氢速率随硼氢化钠的浓度及反应温度的升高而增大，随氢氧化钠浓度的升高呈先增大后减小的趋势，反应活化能为29.02 kJ/mol。在连续式反应器中Co-B/PVFM催化剂催化硼氢化钠水解制氢速率可达12.0 L/min，可为1 kW的燃料电池供应氢气，并且催化活性持续100 min没有发生衰减，表现出极大的实际应用潜力。

关键词: Co-B催化剂, 硼氢化钠, 水解, 制氢

Abstract:

Polyvinyl formal（PVFM） sponge supported Co-B/PVFM catalyst was prepared by impregnation-reduction method，and the effects of sodium borohydride concentration，sodium hydroxide concentration and reaction temperature on the catalytic hydrolysis of sodium borohydride were investigated.The results showed that the hydrogen production rate was increased with the increase of sodium borohydride concentration and reaction temperature，and with the increase of sodium hydroxide concentration，the hydrogen production rate was firstly increased and then decreased.The activation energy of the hydrolysis reaction was 29.02 kJ/mol.In the continuous reactor，Co-B/PVFM catalyst could catalyze hydrolysis of sodium borohydride to produce hydrogen at a rate of 12.0 L/min，which could supply hydrogen for 1 kW fuel cell，and the catalytic activity did not decay for 100 min，showing great practical application potential.

Key words: Co-B catalyst, NaBH₄, hydrolysis, hydrogen generation

中图分类号:

TQ138.12

刘啸, 谢镭, 邓霁峰, 时雨, 郑捷. 海绵负载Co-B催化剂催化硼氢化钠水解制氢性能研究[J]. 无机盐工业, 2023, 55(12): 146-151.

LIU Xiao, XIE Lei, DENG Jifeng, SHI Yu, ZHENG Jie. Study on performance of sponge supported Co-B catalyst for hydrogen generation from catalytic hydrolysis of sodium borohydride[J]. Inorganic Chemicals Industry, 2023, 55(12): 146-151.

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