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Issue 6, 2018
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Ni-phyllosilicate structure derived Ni–SiO2–MgO catalysts for bi-reforming applications: acidity, basicity and thermal stability

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Abstract

In this work, Ni–SiO2–MgO materials synthesized via Ni-phyllosilicate (PS) intermediates were explored for bi-reforming of methane (BRM) reaction. The influence of steam and reaction temperature was also investigated for the BRM reaction. Overall, the 15 wt% Ni–30 wt% SiO2–55 wt% MgO (Ni–SiO2–MgO[55]) catalyst maintained exceptional catalytic performance (CH4 and CO2 conversions were 80% and 60%, respectively) at 750 °C for 140 h with negligible carbon deposition and also showed a stable H2/CO of 2.0. The best catalytic performance of the Ni–SiO2–MgO[55] catalyst is attributed to its enhanced basicity strength, reasonable moderate acidity strength and structural stability during high temperature reforming reaction. The formation and presence of Ni–Mg-containing phyllosilicates in fresh and reduced catalysts respectively was confirmed by TEM images and XRD analysis. The Tmax of around 750 °C in TPR profiles of Ni/SiO2–MgO catalysts further confirms the strength of interactions between Ni and SiO2–MgO support species.

Graphical abstract: Ni-phyllosilicate structure derived Ni–SiO2–MgO catalysts for bi-reforming applications: acidity, basicity and thermal stability

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Publication details

The article was received on 04 Dec 2017, accepted on 19 Feb 2018 and first published on 19 Feb 2018


Article type: Paper
DOI: 10.1039/C7CY02475D
Citation: Catal. Sci. Technol., 2018,8, 1730-1742
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    Ni-phyllosilicate structure derived Ni–SiO2–MgO catalysts for bi-reforming applications: acidity, basicity and thermal stability

    J. Ashok, Z. Bian, Z. Wang and S. Kawi, Catal. Sci. Technol., 2018, 8, 1730
    DOI: 10.1039/C7CY02475D

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