Selected Aspects of Hydrogen Production via Catalytic Decomposition of Hydrocarbons

Abstract

Owing to the high hydrogen content, hydrocarbons are considered as an alternative source for hydrogen energy purposes. Complete decomposition of hydrocarbons results in the formation of gaseous hydrogen and solid carbonaceous by-product. The process is complicated by the methane formation reaction when the released hydrogen interacts with the formed carbon deposits. The present study is focused on the effects of the reaction mixture composition. Variations in the inlet hydrogen and methane concentrations were found to influence the carbon product’s morphology and the hydrogen production efficiency. The catalyst containing NiO (82 wt%), CuO (13 wt%), and Al2O3 (5 wt%) was prepared via a mechanochemical activating procedure. Kinetics of the catalytic process of hydrocarbons decomposition was studied using a reactor equipped with McBain balances. The effects of the process parameters were explored in a tubular quartz reactor with chromatographic analysis of the outlet gaseous products. In the latter case, the catalyst was loaded piecemeal. The texture and morphology of the produced carbon deposits were investigated by nitrogen adsorption and electron microscopy techniques.

A Review on Recent Progress in the Integrated Green Hydrogen Production Processes

“…Hydrocarbon decomposition and pyrolysis have been extensively studied as efficient hydrogen production methods during the past decades. These processes can be promoted using an appropriate catalyst [39]. In what follows, the most critical fossil fuel-based technologies for hydrogen production are briefly discussed.…”

Distributional Trends in the Generation and End-Use Sector of Low-Carbon Hydrogen Plants

“…In [21], the authors investigated state-of-the-art electrocatalysts, and [22] analysed the use of hybrid structures for increasingly efficient water electrolysis, combining both morphological features and electrochemical properties, whereas various researchers have studied other cutting-edge catalysts [23][24][25][26][27]. Numerous advances in blue hydrogen plants have also been made, including pyrolysis of plastic [28] and catalytic decomposition of methane [29] and other hydrocarbons [30]. Finally, numerous articles have examined different means for transportation and storage of hydrogen, an essential component of its widespread use [31][32][33][34].…”

Experimental and Simulation Study on Coproduction of Hydrogen and Carbon Nanomaterials by Catalytic Decomposition of Methane-Hydrogen Mixtures

“…It is important to note that besides hydrogen, the second product of the catalytic pyrolysis of methane over the mentioned metals is nanostructured carbon of given morphology and structure [20,21]. Such carbon is considered as a valuable product, which is attractive for the improvement of physicochemical characteristics of various composite materials, including composites based on cement stone, concrete, different kinds of polymers, lubricants, etc.…”