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- Title
基于蛇纹石化生氢影响因素的制氢方式新思考.
- Authors
于志琪; 刘汇川; 朱光有; 陈玮岩; 桂丽黎
- Abstract
Serpentinization of basic–ultrabasic rocks is one of the most important processes of hydrogen generation in nature. However, the factors influencing its hydrogen generation mechanism and rate and the application feasibility of serpentinization for large-scale industrial hydrogen production remain unclear. On the basis of literature review, this paper discusses the mechanism and influencing factors of hydrogen generation by serpentinization, evaluates the potential of serpentinization for industrial hydrogen production, and proposes two hydrogen production schemes (in situ and non-in situ). The results are obtained in four aspects. First, the hydrogen generation process of serpentinization is mainly sensitive to temperature. The hydrogen generation peaks at 300 ℃. The closer to the optimal temperature, the greater the influence of water-rock ratio on hydrogen generation. Second, the effect of rock type on hydrogen production depends on mineral composition. Al in pyroxene and spinel promotes the hydrogen yield in serpentinization, while Cr and Ni in spinel are key factors to improve the hydrogen yield. In particular, Ni2+ is essential to the efficient hydrogen production in the lowtemperature serpentinization reaction. Third, low-salinity fluid environment and acidic or alkaline environment under certain conditions are more conducive to hydrogen generation. Fourth, the high content of SiO2 at low temperature is not conducive to hydrogen production. In conclusion, compared with traditional hydrogen production methods, serpentinization has the advantages of low cost, low carbon and wide source of raw materials. It also can be combined with carbon storage process to promote the transition of energy to carbon neutrality. Moreover, the new technique of industrial hydrogen production based on the hydrogen generation mechanism of serpentinization is promising and highly potential. It provides an additional option for industrial hydrogen production in China.
- Subjects
CHINA; INTERSTITIAL hydrogen generation; LITERATURE reviews; CARBON offsetting; HYDROGEN as fuel; INDUSTRIAL capacity; HYDROGEN production
- Publication
Natural Gas Industry, 2023, Vol 43, Issue 8, p156
- ISSN
1000-0976
- Publication type
Article
- DOI
10.3787/j.issn.1000-0976.2023.08.015