Coke Minimization in Dry Reforming of Methane by Ni Based Mesoporous Alumina Catalysts Synthesized Following Different Routes: Effects of W and Mg

Effect of synthesis route of mesoporous zirconia based Ni catalysts on coke minimization in conversion of biogas to synthesis gas

“…It was reported in the literature that mesoporous catalyst supports, like MCM-41, were less susceptible to catalyst deactivation due to coke formation than the conventional microporous materials [19]. In a more recent publication of ours, it was reported that mesoporous alumina supported Ni based catalysts showed good catalytic performance and coke formation was significantly decreased by the modification of these catalysts by tungsten [15].…”

“…Much cheaper Ni and Co based catalysts were also reported to show good activity for this reaction [9e16]. However, coke formation is the major problem of using Ni based catalysts in dry reforming of methane [14,15]. Coke formation through methane cracking (Eq.…”

An Overview of Response Surface Methodology Approach to Optimization of Hydrogen and Syngas Production by Catalytic Reforming of Greenhouse Gases (CH4 and CO2)

“…Thermodynamically, the dry methane reforming reaction requires temperature >500 C to be feasible [9,10]. Hence, at a temperature >500 C, coke formation and deposition on the catalyst surface is often induced mainly by methane cracking and Boudouard reactions [11,12]. The deposited coke usually lead to deactivation of the catalyst thereby reducing the activities and stability [13][14][15].…”

An active and coke-resistant dry reforming catalyst comprising nickel–tungsten alloy nanoparticles

“…pointed that W impregnation into Ni@SGA (Ni based mesoporous alumina catalysts synthesized by sol-gel) was shown to cause significant improvement in the coke formation resistance of the Ni incorporated MA (mesoporous alumina synthesized by hydrothermal method), which was considered to be related to good redox potential of tungsten oxide [12]. They infer that carbon formed by the dissociation of methane may react with the oxygen atom on the surface, which may then be replenished by dissociation of CO 2 .…”