In Situ Glycine–Nitrate Combustion Synthesis of Ni–La/SiO₂ Catalyst for Methane Cracking

Abstract

Ni−La catalyst supported on SiO 2 (Ni−La/SiO 2 ) synthesized using in situ glycine−nitrate combustion was analyzed for catalyst dispersion at various catalyst-to-support ratios and support surface areas. Catalytic activity of the catalyst was assessed for methane cracking. The catalyst with higher support loading had a better catalyst dispersion. The use of a support with high surface area also improved catalyst dispersion. Ni−La/SiO 2 B synthesized using a support with high surface area have a higher catalyst dispersion than that of Ni−La/SiO 2 A with a support of low surface area. As a result, Ni−La/SiO 2 B had a better methane conversion (the maximum of ∼60%) than that of Ni−La/SiO 2 A (∼40%) and offered a higher H 2 yield. Moreover, Ni−La/SiO 2 B was found to be active for carbon formation. Nevertheless, the catalyst remained catalytically active for methane cracking without deactivation.

Infiltrate Mesoporous Silica-Aluminosilicate Structure Improves Hydrogen Production via Methane Decomposition over a Nickel-Based Catalyst

“…14,15 In order to operate this reaction at lower temperatures, a metal-based catalyst can be used, effectively reducing the activation energy. Non-noble transition metals such as nickel (Ni), iron (Fe), and cobalt (Co) have been used in the methane decomposition reaction 6,11,16 because these metals have partially filled 3d orbitals that promote the dissociation of hydrocarbons. 10 Among them, nickel has been widely used as a catalyst in methane decomposition reaction due to its high activity even at low reaction temperatures, low cost, availability, and low toxicity.…”

“…Methane decomposition reaction is an environmentally friendly process and highly interesting reaction for hydrogen production because this reaction is moderately endothermic and does not produce greenhouse gases (CO or CO 2 ). ,, Additionally, this reaction produces carbon filaments (carbon nanofibers and carbon nanotubes), which have wide industrial applications such as hydrogen storage, electrodes, catalyst supports, and direct catalysts. , In order to operate this reaction at lower temperatures, a metal-based catalyst can be used, effectively reducing the activation energy. Non-noble transition metals such as nickel (Ni), iron (Fe), and cobalt (Co) have been used in the methane decomposition reaction ,, because these metals have partially filled 3d orbitals that promote the dissociation of hydrocarbons .…”

“…Methane decomposition reaction is an environmentally friendly process and highly interesting reaction for hydrogen production because this reaction is moderately endothermic and does not produce greenhouse gases (CO or CO 2 ). ,, Additionally, this reaction produces carbon filaments (carbon nanofibers and carbon nanotubes), which have wide industrial applications such as hydrogen storage, electrodes, catalyst supports, and direct catalysts. , In order to operate this reaction at lower temperatures, a metal-based catalyst can be used, effectively reducing the activation energy. Non-noble transition metals such as nickel (Ni), iron (Fe), and cobalt (Co) have been used in the methane decomposition reaction ,, because these metals have partially filled 3d orbitals that promote the dissociation of hydrocarbons . Among them, nickel has been widely used as a catalyst in methane decomposition reaction due to its high activity even at low reaction temperatures, low cost, availability, and low toxicity .…”

Reinforcing hydrogen and carbon nanotube co-production via Cr–O–Ni catalyzed methane decomposition

“…18 Considering that carbon deposition during CMD can cover the active sites of a catalyst, exploring new-generation catalysts with high activity and carbon resistance is needed. 19,20…”

2018 International Conference of Chemical Engineering and Industrial Biotechnology (ICCEIB) Preface

“…Abbas et al report on the fabrication of highly stable Ni and Co 3 O 4 nanocube-supported TiO 2 nanorods (NRs) catalyst with improved metal support interaction for steam reforming of phenol. Meanwhile, Tajuddin and co-workers synthesized Ni–La/SiO 2 using an in situ glycine–nitrate combustion technique for methane cracking. The maximum conversion of CH 4 can reach 60.0%.…”