阴极材料和电压对氯碱电解卤水制氢的影响

IF 1.1 4区 工程技术 Q3 CHEMISTRY, ORGANIC
Ahmed R. Noori, Mohammed A. Ahmed, Ali M. Resen, Muna K. Abbass
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引用次数: 0

摘要

氢气生产被认为是一种非常有前途的可持续和环保能源技术。使用膜电解盐水的过程是产生H2气体、Cl2气体和NaOH的重要方法。阴极电极材料的耐腐蚀性和盐水中存在的污染物是影响这一过程的关键决定因素。本研究使用了多种材料制成的阴极电极,包括AlSI 304和AlSI 316L不锈钢,石墨作为阳极电极。伊拉克的Al-Basra盐资源,特别是Al-Fao盐沼,为这项研究提供了盐水。将电极置于4伏、6伏和12伏的不同电压下,持续3小时。盐杂质经过80℃的NaOH处理,以诱导析出固体氢氧化物,然后用空气真空装置过滤。结果表明,304不锈钢电极在低电压下具有稳定性,但阴极电极的氢发射量减少。然而,在较高的电压下,AlSI 304电极经历显著的点蚀。本研究清楚地表明,当工作电压为6 V和12 V时,AlSI 316L阴极电极最适合作为电极材料,因为它不会受到点蚀的影响。石墨是制作阳极电极的最佳材料。通过研究,使用当地可用且价格低廉的组件创建了膜系统。实验证明,该系统可以有效地生产出以前的原料,特别是纯净度为40.50%的氢氧化钠。此外,盐净化过程成功地使氢氧化镁和氢氧化钙的回收率分别达到68.77%和49.89%,使其能够在各个工业部门得到利用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of Cathode Electrode Material and Voltage on the Production of Hydrogen Gas through the Chlor-Alkali Electrolysis Process of Brine Solution

Effect of Cathode Electrode Material and Voltage on the Production of Hydrogen Gas through the Chlor-Alkali Electrolysis Process of Brine Solution

Hydrogen gas production is considered a highly promising technique in the field of sustainable and eco-friendly energy sources. The process of using a membrane to electrolyze brine is a vital approach for the creation of H2 gas, Cl2 gas, and NaOH. The corrosion resistance of the cathode electrode material and the contaminants present in the brine are the key determinants that impact this process. This study utilized cathode electrodes made from a variety of materials, including AlSI 304 and AlSI 316L stainless steel, with graphite as an anode electrode. Iraq’s Al-Basra salt resources, specifically the Al-Fao saltern, provided the brine for this study. The electrodes were subjected to different voltages of 4, 6, and 12 volts for duration of three hours. The salt impurities underwent NaOH treatment at a temperature of 80°C in order to induce precipitation as solid hydroxides, which were then filtered by an air vacuum device. The results indicated that the 304 stainless steel electrodes exhibit stability under low voltages but have diminished hydrogen emission via the cathode electrode. However, at higher voltages, the AlSI 304 electrode experiences significant pitting corrosion. This study clearly showed that when operating at voltages of 6 and 12 V, the AlSI 316L cathode electrode is best suited as the electrode material, which does not suffer from pitting corrosion. Graphite is the optimal material for an anode electrode. Through the research, a membrane system was created using locally available and inexpensive components. This system proved to be effective in producing the previous materials, especially sodium hydroxide, with a purity level of 40.50%. Additionally, the salt purification procedure successfully produced high recovery rates of 68.77% for magnesium hydroxide and 49.89% for calcium hydroxide, enabling their utilization in various industrial sectors.

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来源期刊
Petroleum Chemistry
Petroleum Chemistry 工程技术-工程:化工
CiteScore
2.50
自引率
21.40%
发文量
102
审稿时长
6-12 weeks
期刊介绍: Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.
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