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ChemRxiv_2003.pdf (983.39 kB)
Novel Ni/MgO Catalysts from Mesoporous MgCO3 for Highly Efficient CO Methanation: Effects of Al and Si Stabilization
Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
submitted on 06.03.2020 and posted on 10.03.2020by Wenming Hao, Maria Vall, Yufei Shi, Qianqian Wang, Maria Strømme, Xiaoliang Yan, Ocean Cheung, Ruifeng Li
Methanation of syngas
is a possible way to produce synthetic natural gas. Ni has been proven to be a
good and cost-effective catalyst for this reaction. Here we have synthesized
Ni/MgO catalyst using mesoporous magnesium carbonate (MMC) as a precursor.
Addition of Al2O3 and SiO2 to MMC were made
and the different MMC based materials were then impregnated with Ni(NO3)2
and calcined to generate the catalysts. Addition of Al2O3
showed an improvement in the catalytic performance compared to the NiO/MgO
catalyst. The catalyst containing Al2O3 had a CO
conversion close to 100 % at 350 °C and a high selectivity and yield for CH4.
The better performance of the aluminum containing catalyst was believed to be an
effect of a better dispersion of Ni at the surface of the catalyst