In-situ investigation of ethanol steam reforming on Ni and Cr doped ferrites using combined X-ray absorption spectroscopy, mass spectrometry, and gas chromatography

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Senamart N., Loiha S., Poo-arporn Y., Tawachkultanadilok P., Tonlublao S., Limphirat W., Duangmanee S., Kamonpha P., Wittayakun J., Osakoo N., Wannapaiboon S., Poo-arporn R.P.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2021

วารสาร: Radiation Physics and Chemistry (0969-806X)

Volume number: 185

หน้าแรก: 109492

นอก: 0969-806X

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104380933&doi=10.1016%2fj.radphyschem.2021.109492&partnerID=40&md5=636393542f177eeb0e5e6054e5130fc5

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

An ethanol steam reforming (ESR) reaction is a H2-production process that the fuel reacts with water in the presence of catalysts. The catalyst structures and active phase compositions have a role in ethanol conversion and hydrogen-production selectivity. The Fe3O4 catalysts with Ni and Cr dopants were prepared and used for the ESR. The morphology and structural property of prepared catalysts were determined by FESEM-EDS, XRD, and XAS techniques. The spinel structures were observed in Fe3O4, Ni/Cr@Fe3O4, and NiFe2O4 while the CrFe2O4 exhibited a mixture between Fe2O3 and Cr2O3 phases. The combined X-ray absorption spectroscopy, mass spectrometry, and gas chromatography was applied to investigate the performance of prepared catalysts during temperature-programmed reduction and ESR processes. The NiFe2O4 exhibited the highest catalytic activity and stability for hydrogen production. The Ni-incorporation in spinel ferrite structure enhanced reduction efficiency of iron compounds at low temperatures and improves its catalytic activity and stability to the ESR process. Furthermore, the NiFe2O4 catalyst also exhibited the ability to regenerate during ESR process as evidenced by X-ray absorption spectrum. © 2021 Elsevier Ltd

คำสำคัญ

Ethanol-steam reforming, Metal ferrites, operando XAS, Regenerate