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http://dx.doi.org/10.14478/ace.2021.1041

Effect of Eu in Partial Oxidation of Methane to Hydrogen over Ln(1)-Ni(5)/SBA-15 (Ln = Dy, Eu, Pr, and Tb) Catalysts  

Seo, Ho Joon (Department of Chemical and Biomolecular Engineering, Chonnam National University)
Publication Information
Applied Chemistry for Engineering / v.32, no.4, 2021 , pp. 478-482 More about this Journal
Abstract
The catalytic yields of partial oxidation of methane (POM) to hydrogen over Ln(1)-Ni(5)/SBA-15 (Ln = Dy, Eu, Pr, and Tb) were investigated in a fixed bed flow reactor under atmosphere. As 1 wt% of Eu was added to Ni(5)/SBA-15 catalyst, the O1s and Si2p core electron levels of Eu(1)-Ni(5)/SBA-15 showed the chemical shift by XPS. XPS analysis also demonstrated that the atomic ratio of O1s, Ni2p3/2, and Si2p increased to 1.284, 1.298, and 1.058, respectively, and exhibited O-, and O2- oxygen and metal ions such as Eu3+, Ni0, Ni2+, and Si4+ on the catalyst surface. The yield of hydrogen on the Eu(1)-Ni(5)/SBA-15 was 57.2%, which was better than that of Ln(1)-Ni(5)/SBA-15 (Ln = Dy, Pr, and Tb), the catalytic activity was kept steady even 25 h. As 1 wt% of Eu was added to Ni(5)/SBA-15, the oxygen vacancies caused by strong metal-support interaction (SMSI) effect due to the strong interaction between metals and carrier are made. They are resulted in increasing the dispersion of Ni0, and Ni2+ nano particles on the surface of catalyst, and are kept catalytic activity.
Keywords
Eu; Hydrogen; Methane; Partial oxidation; SBA-15;
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