کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
299961 512465 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Activity of Fe supported by Ce1−xSmxO2−δ derived from metal complex decomposition toward the steam reforming of toluene as biomass tar model compound
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Activity of Fe supported by Ce1−xSmxO2−δ derived from metal complex decomposition toward the steam reforming of toluene as biomass tar model compound
چکیده انگلیسی


• Ce1−xSmxO2−δ are successfully prepared by metal complex decomposition.
• Ce1−xSmxO2−δ are used as catalyst and support for the steam reforming of toluene.
• Fe/Ce1−xSmxO2−δ show high stability and activity toward the reaction.

Ceria (CeO2) and samaria doped ceria (Ce1−xSmxO2−δ) powders with various Ce/Sm ratios have been successfully prepared via metal complex decomposition. The catalytic activities of these synthesized materials toward the steam reforming of toluene as model compound of biomass tar were studied with an aim to determine the suitable catalyst for biomass tar decomposition in biomass gasification system. From the study, H2, CO, CO2, CH4, C2H4 and C2H6 were the main products from the reaction with low carbon deposition observed on the catalyst surface after 18 h operation. Among all catalysts, relatively higher toluene conversion and H2 yield (32.8%) with greater resistance toward carbon deposition was achieved from Ce0.85Sm0.15O2−δ. To enhance better toluene conversion and H2 yield, Ce0.85Sm0.15O2−δ was further applied as the catalyst support by impregnating low-cost Fe on its surface; and its reforming activity was compared to Ni and Fe supported over conventional γ-Al2O3. It was found that, Fe/Ce0.85Sm0.15O2−δ offered significantly higher toluene conversion and H2 yield than Fe/Al2O3 (55.2% H2 yield compared to 16.5%). Its reforming activity was also comparable to Ni/Al2O3 with better H2 yield stability after 72 h operation (16% deactivation for Fe/Ce0.85Sm0.15O2−δ compared to 35% deactivation for Ni/Al2O3). Therefore, Fe/Ce0.85Sm0.15O2−δ has good potential to replace Ni-based catalyst in biomass gasification system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 74, February 2015, Pages 133–138
نویسندگان
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