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Valuation of catalytic activity of nickel– zirconia‐based catalysts using lanthanum co‐support for dry reforming of methane
Author(s) -
ElSalamony Radwa A.,
ElTemtamy Seham A.,
El Naggar Ahmed M.A.,
Ghoneim Salwa A.,
Abd ElHafiz Dalia R.,
Ebiad Mohamed A.,
Gendy Tahani,
AlSabagh Ahmed M.
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6043
Subject(s) - syngas , carbon dioxide reforming , catalysis , lanthanum , methane , syngas to gasoline plus , methane reformer , chemistry , physisorption , hydrogen production , inorganic chemistry , chemical engineering , hydrogen , cubic zirconia , nickel , materials science , steam reforming , organic chemistry , ceramic , engineering
Summary The improvement of hydrogen concentration in the obtained syngas during methane dry reforming is strongly demanded. Additionally, enhancement of CO 2 and CH 4 conversions has been of high preference. In line with these aims, this research work studies the impact of incorporating lanthanum metal either as a catalytic promoter or as a cosupport, on the efficiency of the reforming process. Two percentages namely 2.5 and 5 wt% were added to a catalyst composed of Ni(10%)–Zr(90%). Thus, four catalytic composites for methane dry reforming were produced. The prepared composites were characterized using XRD, N 2 ‐physisorption, HR‐TEM, TPR, and Raman spectrometer. The catalytic performance and H 2 /CO ratio were deteriorated as a result of using lanthanum as a promoter, when compared to the nonpromoted zirconia‐supported Ni catalyst. However, using La as a cosupport showed a strong positive effect on reactants' conversions, the resultant H 2 /CO ratio and H 2 yield%. The most active catalyst in this work was Ni/5La‐ZrO 2 catalyst; it showed 73% of hydrogen yield and syngas with H 2 /CO molar ratio of 1.61 which can be used as feed gas in the Fischer–Tropsch process for the production petroleum distillates.