Recent advances in cleaner hydrogen productions via thermo-catalytic decomposition of methane: Admixture with hydrocarbon

Abstract

A continuous increase in the greenhouse gases concentration due to combustion of fossil fuels for energy generation in the recent decades has sparked interest among the researchers to find a quick solution to this problem. One viable solution is to use hydrogen as a clean and effective source of energy. In this paper, an extensive review has been made on the effectiveness of metallic catalyst in hydrocarbon reforming for COX free hydrogen production via different techniques. Among all metallic catalyst, Ni-based materials impregnated with various transition metals as promoters exhibited prolonged stability, high methane conversions, better thermal resistance and improved coke resistance. This review also assesses the effect of reaction temperature, gas hour space velocity and metal loading on the sustainability of thermocatalytic decomposition TCD of methane. The practice of co-feeding of methane with other hydrocarbons specifically ethylene, propylene, hydrogen sulphide, and ethanol are classified in this paper with the detailed overview of TCD reaction kinetics over an empirical model based on power law that has been presented. In 2 addition, it is also expected that the outlook of TCD of methane for green hydrogen production will provide researchers with an excellent platform to the future direction of the process over Nibased catalysts.

Synthesis, Characterisation, and Performance Evaluation of Promoted Ni‐Based Catalysts for Thermocatalytic Decomposition of Methane

“…This is in good agreement with the literature data based on an empirical model found in the previous work of Wang et al. [22]…”

“…[20,21] In TCD reaction, Ni has a high reactivity in facilitating methane decomposition at a temperature as low as 773 K. Besides, the catalytic activity of Ni-based catalysts was found to be improved significantly upon diluting Ni with other metals in forming bimetallic catalysts. [22,23] Thus, many literatures have been collected to synthesise bimetallic catalysts. [24] Moreover, the catalytic activity of Ni phase has often been reported to be enhanced with the addition of suitable promoters.…”

“…Due to the unique properties of Ni catalyst, a wide range of catalytic applications have been reported in the literature, such as hydrodeoxygenation, methanation reaction, and methane reforming reactions . In TCD reaction, Ni has a high reactivity in facilitating methane decomposition at a temperature as low as 773 K. Besides, the catalytic activity of Ni‐based catalysts was found to be improved significantly upon diluting Ni with other metals in forming bimetallic catalysts . Thus, many literatures have been collected to synthesise bimetallic catalysts .…”

Hydrogen Production Performances via Steam Reforming over Hydrotalcite Derived Catalyst: A Sustainable Energy Production Review

“…Most of the cases 87% and 85% methane conversion were reported using tri-metallic (10%Zn-10%Cu-50%Ni) catalysts at 1023˚K temperature and bimetallic catalyst (40%Coe10%W) at 973˚K respectively. Lower carbon deposition for tri-metallic catalysts was reported [62]. Reyna-villanueva et al, [53] obtained 98.59% conversion of an ester using HT derived Mg-Al catalyst at 65˚C.…”

Methane Decomposition Over ZrO2-Supported Fe and Fe–Ni Catalysts—Effects of Doping La2O3 and WO3

“…Emissions of greenhouse gases like CH 4 contribute aggressively to environmental issues. Methods of transforming CH 4 into handy products are worthy from the prospect of safety and the economic point of view of generating value-added fuels and chemicals (Ashok et al, 2008;Muhammad et al, 2018;Zhang et al, 2018). In this context, a direct approach is chosen for hydrogen (H 2 ) and elemental carbon production, as given in Equation (1).…”