Open AccessInfluence of Ce2O3 addition on the basicity of Ni/MgO and on its catalytic performance in dry reforming of methane (Turning CO2 to fuel)
Author(s) -
Faris A. J. Al-Doghachi,
Yun Hin TaufiqYap
Publication year - 2021
Publication title -
mağallaẗ al-buḥūṯ wa-al-dirāsāt al-nafṭiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2710-1096
pISSN - 2220-5381
DOI - 10.52716/jprs.v8i3.256
Subject(s) - carbon dioxide reforming , catalysis , methane , nickel , inorganic chemistry , magnesium nitrate , chemistry , nuclear chemistry , cerium , magnesium , methane reformer , syngas , steam reforming , hydrogen production , organic chemistry
The only way to stabilize the Earth’s climate is to stabilize the concentration of greenhousegases in the atmosphere. In this study, the conversion of methane and CO2 to synthesis gasusing dry reforming over catalysts Ni/Mg1-XCeXO (x= 0, 0.03, 0.07, 0.15; 1 wt% Ni each),dry reforming of methane was performed. The catalysts were prepared by K2CO3 coprecipitationfrom aqueous cerium nitrate hexahydrate and magnesium nitrate hexahydrate.Impregnation of nickel (II) acetylacetonate onto MgO-Ce2O3 was then conducted. TEM,XRD, FTIR, XRF, XPS, and BET characterizations of the catalysts were carried out.Results showed that the catalysts were reduced at 700 °C by H2 prior to each reaction. CH4and CO2 conversions at 900 °C of the catalysts after being tested for 200h decreased in theorder Ni/Mg0.85Ce0.15O, Ni/Mg0.93Ce0.07O, Ni/Mg0.97Ce0.03O, and Ni/MgO. The highest H2and CO selectivities, was observed at a 1:1 CH4:CO2 mole ratio. We further performed adry reforming in the presence of low-concentration oxygen flow (1.25 Vol %) and found anincreased CH4 conversion.