<P><B>Abstract</B></P> <P>In this study, novel perovskite-type Sr<SUB>0.92</SUB>Y<SUB>0</SUB>.<SUB>08</SUB>TiO<SUB>3</SUB>-based catalysts were investigated for hydrogen pr...
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https://www.riss.kr/link?id=A107437440
2018
-
SCI,SCIE,SCOPUS
학술저널
213-219(7쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>In this study, novel perovskite-type Sr<SUB>0.92</SUB>Y<SUB>0</SUB>.<SUB>08</SUB>TiO<SUB>3</SUB>-based catalysts were investigated for hydrogen pr...
<P><B>Abstract</B></P> <P>In this study, novel perovskite-type Sr<SUB>0.92</SUB>Y<SUB>0</SUB>.<SUB>08</SUB>TiO<SUB>3</SUB>-based catalysts were investigated for hydrogen production by the dry reforming of biogas (comprising CH<SUB>4</SUB> and CO<SUB>2</SUB>). Ni-doped Sr<SUB>0.92</SUB>Y<SUB>0</SUB>.<SUB>08</SUB>TiO<SUB>3</SUB> catalysts with improved catalytic activity were grown using the Pechini method. The prepared catalysts were characterized using X-ray diffraction to check for impurities introduced in the perovskite structure by doping method. The reforming of methane over perovskite-based catalysts has been extensively investigated; however, detailed understanding of the activating catalytic sites under different conditions is still lacking. To understand the details of the activating catalyst mechanism, transmission electron microscopy, temperature-programed reduction, X-ray photoelectron spectroscopic (XPS) analysis were performed under different activating conditions. XPS analysis of 5mol% Ni-doped Sr<SUB>0.92</SUB>Y<SUB>0.08</SUB>TiO<SUB>3</SUB> revealed that the H<SUB>2</SUB>-activated catalyst lost active lattice oxygen sites and Ni sites due to formation of Ni hydroxide. Thus, the H<SUB>2</SUB>-activated catalyst has lower catalytic activity than the N<SUB>2</SUB>-activated one.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The novel Ni-doped Sr<SUB>0.92</SUB>Y<SUB>0.08</SUB>TiO<SUB>3</SUB> was prepared via Pechini Method. </LI> <LI> The novel Ni-doped Sr<SUB>0.92</SUB>Y<SUB>0.08</SUB>TiO<SUB>3</SUB> was activated under N<SUB>2</SUB> or reduction condition. </LI> <LI> The N<SUB>2</SUB>-activated catalyst showed the better activity than the H<SUB>2</SUB>-activated case. </LI> <LI> The 5mol% Ni-doped Sr<SUB>0.92</SUB>Y<SUB>0.08</SUB>TiO<SUB>3</SUB> catalyst showed excellent long-term stability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>