Preparation of gadolinia doped ceria via metal complex decomposition method: Its application as catalyst for the steam reforming of ethane

บทความในวารสาร


ผู้เขียน/บรรณาธิการ


กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง


รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่งVeranitisagul C., Koonsaeng N., Laosiripojana N., Laobuthee A.

ผู้เผยแพร่Elsevier

ปีที่เผยแพร่ (ค.ศ.)2012

วารสารJournal of Industrial and Engineering Chemistry (1226-086X)

Volume number18

Issue number3

หน้าแรก898

หน้าสุดท้าย903

จำนวนหน้า6

นอก1226-086X

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84858155629&doi=10.1016%2fj.jiec.2012.01.047&partnerID=40&md5=234573a92241f9d06504e6a45866e222

ภาษาEnglish-Great Britain (EN-GB)


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บทคัดย่อ

The ceria (CeO 2) and gadolinia doped ceria (GDC; Ce 1-xGd xO 2-δ with x=0.10, 0.15, and 0.20) catalysts were successfully prepared via metal complex decomposition method at 900°C for 2h. The synthesized CeO 2 and GDC were found to have useful activity to convert ethane to syngas via the steam reforming reaction at the temperature range of 800-900°C. The catalytic activity was improved with increasing Gd doping amount from 0 to 0.1 and 0.15; nevertheless, at higher Gd doping content (0.2), the improvement becomes less pronounced. Among all catalysts, Ce 0.85Gd 0.15O 2-δ showed the best steam reforming activity; furthermore, the amount of carbon formation over this catalyst was relatively low. These enhancements are mainly due to the high specific surface area and the good oxygen storage capacity (OSC) of the material. During the steam reforming process, the gas-solid reactions between the gaseous components presented in the system (C 2H 6, C 2H 4, and CH 4) and the lattice oxygen (O x) on the surface CeO 2 or GDC occurs. The reactions of hydrocarbons adsorbed on the surface with O x (C nH m+O x→nCO+m/2(H 2)+O x-n) can prevent the formation of carbon species from hydrocarbons decomposition reaction (C nH m⇔nC+m/2H 2). Moreover, the formation of carbon via Boudouard reaction (2CO⇔CO 2+C) is also reduced by the gas-solid reaction of CO with the lattice oxygen (CO+O x⇔CO 2+O x-1). © 2012 The Korean Society of Industrial and Engineering Chemistry.


คำสำคัญ

EthaneGadolinia doped ceriaMetal complex decompositionReforming


อัพเดทล่าสุด 2023-17-10 ถึง 07:35