Investigation of the features of hydrogen synthesis by water decomposition on micro-and macrostructured silicon powders

Лабунов, В. А.; Kovalevskii, A. A.; Долбик, А. В.; Строгова, А. С.; Saurov, A. N.; Basaev, A. S.

doi:10.1007/s10891-008-0073-9

Cited by 3 publications

(12 citation statements)

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“…Besides the hydrogénation of carbon dioxide in useful hydrocarbons and energy resources, hydrogen itself is an equally promising secondary fuel and an excellent carrier for energy storage -an environmentally friendly and practically inexhaustible energy carrier with low emissions of greenhouse gases and pollutants during its use [9].…”

Section: Methodsmentioning

confidence: 99%

“…According to calculations, 1234.44 liters of hydrogen can be obtained from one liter of water. The most advanced electrolysers use more energy to produce 1 m 3 of hydrogen than it is possible to burn [9]. The problem of reducing energy consumption for the production of hydrogen from water is solved in numerous scientific laboratories worldwide.…”

Section: Methodsmentioning

confidence: 99%

“…It is worth noting that efforts are being made to explore renewable, environmentally friendly and highly efficient approaches to hydrogen production [22], since the reforming of fossil fuels or hydrocarbons does not seem to be environmentally acceptable, and the efficiency of industrial water electrolysis remains rather low. In response to the shortcomings of traditional methods, attempts are being made to investigate various processes of physicochemical decomposition of water and hydrolysis of metals in the presence of iron catalysts or their compounds (platinum, palladium, hot iron, sodium aluminate tetrahydrate and sodium amalgam) [9].…”

Section: Methodsmentioning

confidence: 99%

“…A team of Belarusian researchers [9] attempted to demonstrate hydrogen production as a result of chemical decomposition of water on silicon powders in micro-and nanostructured form when interacting with potassium and sodium hydroxides. In this case, the reaction is exothermic, proceeds with the release of thermal energy up to 196 kJ/mol, without requiring preliminary heating of the components, and is described by the following formulas [9]: Si + 2KOH + H 2 O = K 2 SiO 3 + 2H 2 (gas), Si + 2NaOH + H 2 O = Na 2 SiO 3 + 2H 2 (gas). The study indicates [9] that the reaction takes place at ambient temperature and its speed depends on the fineness (particle size) of the silicon powder.…”

Section: Methodsmentioning

confidence: 99%

“…In this case, the reaction is exothermic, proceeds with the release of thermal energy up to 196 kJ/mol, without requiring preliminary heating of the components, and is described by the following formulas [9]: Si + 2KOH + H 2 O = K 2 SiO 3 + 2H 2 (gas), Si + 2NaOH + H 2 O = Na 2 SiO 3 + 2H 2 (gas). The study indicates [9] that the reaction takes place at ambient temperature and its speed depends on the fineness (particle size) of the silicon powder. When using powders of silicon, the rate of hydrogen formation increases with increasing particle size.…”

Section: Methodsmentioning

confidence: 99%

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Current status of research on the synthesis of hydrogen, hydrocarbons and conversion of carbon dioxide in the framework of reducing anthropogenic pressure on the environment and switching to environmentally friendly energy sources

Klimov

Garifullina

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The world’s energy sector faces two major challenges: one is the rapid rise in the price of oil products, and the other is the increase in the amount of carbon dioxide emitted by industry into the atmosphere, leading to global warming. Developments in alternative energy sources, such as solar and hydrogen energy, are becoming increasingly relevant. In this regard, there has been a lot of interest in converting CO2 into useful products. Hydrogenation of carbon dioxide into useful energy resources and chemicals is becoming increasingly important as it is seen as a promising way to reclaim harmful CO2 as a by-product. The article considers modern technologies of hydrogen production and industrial conversion of carbon dioxide into useful products, and also describes the author’s natural method of catalytic conversion of carbon dioxide into useful green energy resources – hydrogen and hydrocarbons.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Current status of research on the synthesis of hydrogen, hydrocarbons and conversion of carbon dioxide in the framework of reducing anthropogenic pressure on the environment and switching to environmentally friendly energy sources

Klimov

Garifullina

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Investigation of CO2 Utilization Processes on Metal-Containing Fillers with Generation of Hydrogen and Hydrocarbons

Garifullina

Ibragimov

Indrupskiy

et al. 2021

Day 3 Thu, October 14, 2021

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Continuing consumption of fossil fuels around the world, which has led to an increasing concentration of carbon dioxide CO2 in the atmosphere and global climate change caused by greenhouse gases, has become one of the main challenges for humanity. Heterogeneous catalytic hydrogenation of carbon dioxide in order to obtain valuable carbon-containing products and materials is one of the decarbonization directions. There is much research in the world dedicated to the hydrogenation of CO2 to various hydrocarbons, such as methane, lower olefins, long-chain hydrocarbons, formic acid, methanol and higher alcohols, which are produced by catalytic reactions with various mechanisms. There are still significant challenges associated with the need for an external source of hydrogen, high process temperatures, and the development of active, selective, and stable catalysts that would be suitable for large-scale production. This paper presents results of research on a CO2 utilization method with hydrogen and hydrocarbons production – the transformation of wastes into a source of energy, which allows solving environmental and energy problems. The method described in this paper consists in the interaction of metallic fillers with water saturated with carbon dioxide in a reactor at low (room) temperatures and further analysis of the resulting gas mixture using a chromatograph. Qualitative and quantitative evaluation of the produced gas composition, study of the effect of reaction system volume, filler composition and structure, and process temperature on the reaction product yield are presented. The results of theoretical and experimental analysis of the reactions underlying the process are given, and the economic potential of the proposed laboratory method is evaluated.

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Reducing the anthropogenic impact on the environment as part of the transition to environmentally friendly energy sources: a review of current research on hydrogen synthesis and carbon dioxide utilization

Klimov¹,

Indrupskiy²,

Drozdov³

2022

SOCAR Proceedings

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The problem of carbon dioxide utilization is of increasing concern to the public, since measures to reduce greenhouse gas emissions are no longer sufficient to prevent a global increase in temperature on the planet. The global energy sector is facing two major challenges: skyrocketing prices for petroleum products and an increase in the amount of carbon dioxide emitted into the atmosphere by industry. The growing anthropogenic pressure on the environment has increased interest in the geological storage of carbon dioxide. Developments in the field of alternative energy sources are becoming more and more relevant: hydrogenation and synthesis, solar energy, hydrogen energy. Promising trend, from the point of view of utilization, is associated with the production and use of environmentally friendly energy carriers through the conversion of carbon dioxide. The article discusses modern technologies for producing hydrogen and industrial conversion of carbon dioxide into useful products, including the author's nature-like method for converting carbon dioxide into green energy resources. Keywords: carbon dioxide utilization; underground storage; hydrogenation and synthesis; hydrocarbons; hydrogen; alternative energy sources; catalysts.

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Investigation of the features of hydrogen synthesis by water decomposition on micro-and macrostructured silicon powders

Cited by 3 publications

References 1 publication

Current status of research on the synthesis of hydrogen, hydrocarbons and conversion of carbon dioxide in the framework of reducing anthropogenic pressure on the environment and switching to environmentally friendly energy sources

Current status of research on the synthesis of hydrogen, hydrocarbons and conversion of carbon dioxide in the framework of reducing anthropogenic pressure on the environment and switching to environmentally friendly energy sources

Investigation of CO2 Utilization Processes on Metal-Containing Fillers with Generation of Hydrogen and Hydrocarbons

Reducing the anthropogenic impact on the environment as part of the transition to environmentally friendly energy sources: a review of current research on hydrogen synthesis and carbon dioxide utilization

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