Fe离子浓度及电解温度对煤浆电解制氢的影响

doi:10.3969/j.issn.2095-2198.2022.06.005

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我国煤炭资源丰富，煤直接燃烧会产生环境污染问题.氢能被认为是21世纪最理想的清洁能源.煤浆电解制氢技术不仅结合了煤的清洁利用和氢能的制备，而且其能耗仅是水电解制氢的1/3~1/2，是一种新型制氢技术.从煤浆电解制氢的工艺角度出发，分别采用线性伏安法（LSV）和计时电流法（I-t），考察了Fe离子浓度和电解温度这两个影响因素对煤浆电解制氢的影响.结果表明：在230目的煤颗粒、1 mol/L硫酸、300 r/min搅拌速度下，随着电解液中Fe³⁺/Fe²⁺浓度的增加，电解效率增加.Fe³⁺/Fe²⁺的协同作用对于电解效率的影响优于单独的Fe³⁺或Fe²⁺，0.04 mol/L Fe³⁺/Fe²⁺为电解过程的最佳浓度.随着温度的升高，电解效率增加，80 ℃为电解过程的最佳温度.

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煤浆电解氢影响因素

Abstract:

China was rich in coal resources，and its direct combustion brought pollution to the environment.Hydrogen energy was regarded as the most ideal clean energy in the 21st century.The technology of coal slurry electrolysis to produce hydrogen not only combined the clean utilization of coal and the production of hydrogen，but also consumed only 1/3 to 1/2 of the energy of hydrolysis hydrogen production，which was a new hydrogen production technology.The influence factors of Fe ion concentration and electrolysis temperature were investigated by linear voltammetry(LSV) and timing current method(I-t)，respectively.The results showed that under the experimental conditions of 230 mesh coal particles，1 mol/L sulfuric acid and 300 r/min stirring speed，the electrolysis efficiency increased with the increase of the concentration of Fe³⁺/Fe²⁺ in the electrolyte.The synergistic effect of Fe³⁺/Fe²⁺on the electrolytic efficiency was better than that of Fe³⁺ or Fe²⁺ alone，0.04 mol/L Fe³⁺/Fe²⁺ was the optimal concentration in the electrolysis process.With the increase of temperature，the electrolytic efficiency increased，and 80 ℃ was the optimal temperature for the electrolytic process.

Key words: coal slurry')" href="#">

coal slurry electrolysis hydrogen influence factors

出版日期: 2022-12-31 发布日期: 2024-06-06 整期出版日期: 2022-12-31

ZTFLH:

TQ151

基金资助:

辽宁省高等学校创新人才项目(LR2019055)；辽宁省教育厅项目（LJ2020035）

引用本文:

于萍, 郑茹恒, 马鸿泽, 李政达.

Fe离子浓度及电解温度对煤浆电解制氢的影响 [J]. 沈阳化工大学学报, 2022, 36(6): 502-506.
YU Ping, ZHENG Ru-heng, MA Hong-ze, LI Zheng-da.

Effect of Fe Ion Concentration and Electrolysis Temperature on Hydrogen Production from Coal Slurry Electrolysis . Journal of Shenyang University of Chemical Technology, 2022, 36(6): 502-506.

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https://xuebao.syuct.edu.cn/CN/10.3969/j.issn.2095-2198.2022.06.005 或 https://xuebao.syuct.edu.cn/CN/Y2022/V36/I6/502

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