期刊
CATALYSIS TODAY
卷 357, 期 -, 页码 583-589出版社
ELSEVIER
DOI: 10.1016/j.cattod.2019.05.039
关键词
Pyrochlore; Bi-reforming of methane; Dry reforming of methane; Ni catalyst
资金
- Department of Chemical and Process Engineering at the University of Surrey
- EPSRC [EP/R512904/1]
- Royal Society [RSGR1180353]
- CO2Chem through the EPSRC [EP/P026435/1]
- Ministerio de Economia, Industria y Competitividad of Spain - FEDER funds from the European Union [ENE2015-66975-C3-2-R]
- Armourers & Brasiers Gauntlet Trust
The bi-reforming of methane (BRM) has the advantage of utilising greenhouse gases and producing H-2 rich syngas. In this work Ni stabilised in a pyrochlore-double perovskite structure is reported as a viable catalyst for both Dry Reforming of Methane (DRM) and BRM. A 10 wt.% Ni-doped La2Zr2O7 pyrochlore catalyst was synthesised, characterised and tested under both reaction conditions and its performance was compared to a supported Ni/La2Zr2O7. In particular the effect of steam addition is investigated revealing that steam increases the H-2 content in the syngas but limits reactants conversions. The effect of temperature, space velocity and time on stream was studied under BRM conditions and brought out the performance of the material in terms of activity and stability. No deactivation was observed, in fact the addition of steam helped to mitigate carbon deposition. Small and well dispersed Ni clusters, possibly resulting from the progressive exsolution of Ni from the mixed oxide structure could explain the enhanced performance of the catalyst.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据