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Effects of B-site A...
Effects of B-site Al doping on microstructure characteristics and hydrogen production performance of novel LaNixAl1-xO3-δ perovskite in methanol steam reforming
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- Shen, Qiuwan (author)
- Dalian Maritime University
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- Shao, Zicheng (author)
- Dalian Maritime University
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- Li, Shian (author)
- Dalian Maritime University
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- Yang, Guogang (author)
- Dalian Maritime University
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- Sunden, Bengt (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,LTH profilområde: Nanovetenskap och halvledarteknologi,LTH profilområden,LU profilområde: Ljus och material,Lunds universitets profilområden,Other operations, LTH,Faculty of Engineering, LTH,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Nanoscience and Semiconductor Technology,LTH Profile areas,Faculty of Engineering, LTH,LU Profile Area: Light and Materials,Lund University Profile areas
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
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In: Energy. - : Elsevier BV. - 0360-5442. ; 268
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Subject headings
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- A series of B-site aluminum doped LaNixAl1-xO3-δ (x = 0–1) perovskite samples were prepared by the sol-gel method and applied as catalysts for methanol steam reforming (MSR). The synthesized perovskite catalysts were characterized by SEM, XRD, SEM-EDS, XPS, TEM and BET. Results showed that LaNi0.4Al0.6O3-δ exhibited the highest methanol conversion and hydrogen production amount per unit time. However, the excessive aluminum content led to a decrease in H2 selectivity, and the high W/M promoted the reverse water-gas shift reaction (RWGS), which resulted in a decrease in CO selectivity and an increase in CO2 selectivity. The results of XRD, XPS and BET indicated that the LaNi0.4Al0.6O3-δ catalyst sample still exhibit a very typical perovskite structure after hydrogen reduction treatment. The results also indicated that there were active sites for MSR on the LaNi0.4Al0.6O3-δ sample that were not successfully reduced, but the specific surface area and porous characteristics of the catalyst were changed by H2 reduction treatment. The optimal reaction temperature, GHSV and W/M were determined to be 600 °C, 10,520 h−1, 3:1, respectively. In addition, the LaNi0.4Al0.6O3-δ shows high catalytic activity within 20 h of stability test. The average methanol conversion and H2 selectivity during 20 h were 91% and 93% on average, respectively.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
Keyword
- Al doping
- Characteristics
- LaNiAlO
- Methanol steam reforming
- Optimal reaction parameters
Publication and Content Type
- art (subject category)
- ref (subject category)
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