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首页> 外文期刊>RSC Advances >Bimodal NdNiAl and NdFeB hybrid catalytic and magnetic nanoparticles laminated on Fe foam: catalytic conversion of CO + 3H2 to CH4
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Bimodal NdNiAl and NdFeB hybrid catalytic and magnetic nanoparticles laminated on Fe foam: catalytic conversion of CO + 3H2 to CH4

机译：Fe泡沫层压双峰NdNiAl和NdFeB杂化催化和磁性纳米粒子：CO + 3H 2 催化转化为CH 4

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摘要

For the production of CH4 from CO hydrogenation, a hybrid foam with high catalytic activity and strong magnetic bonding ability was fabricated by electrospraying and co-sintering Nd-doped NiAl catalytic nanoparticles and NdFeB magnetic nanoparticles over a Fe foam. When the NdNiAl nanoparticles were uniformly distributed over a NdFeB nanoparticles support, they exhibited exceedingly high catalytic activity, selective conversion and stable adhesion. In particular, bimodal NdNiAl–NdFeB hybrid nanoparticles (with a ratio of 85.0 to 15.0 wt%) immobilized on Fe foam exhibited a high CO to CH4 conversion rate, with a TOF value of 1.1 s?1 and a CH4 selectivity value of 77.1% at a specific temperature of 260.0 °C. This improved catalytic behavior was attributed to the enhanced uniform dispersion of NdNiAl nanoparticles over a NdFeB nanoparticles support. At the same time, the NdFeB nanoparticles had high hydrogen absorptivity, which helped adjacent NdNiAl nanoparticles activated with CO to be hydrogenated and produce CH4.
机译：为了通过CO加氢生产CH 4 ，通过电喷雾和烧结Nd掺杂的NiAl催化纳米粒子，制备了具有高催化活性和强磁键能力的杂化泡沫。 Fe泡沫上的NdFeB磁性纳米粒子。当NdNiAl纳米颗粒均匀分布在NdFeB纳米颗粒载体上时，它们表现出极高的催化活性，选择性转化和稳定的附着力。尤其是，固定在Fe泡沫上的双峰NdNiAl–NdFeB杂化纳米粒子（比例为85.0至15.0 wt％）表现出高的CO转化为CH 4 的速率，且在260.0的特定温度下，TOF值为1.1 s ？1 ，CH 4 的选择性值为77.1％ ℃。这种改进的催化行为归因于NdNiAl纳米颗粒在NdFeB纳米颗粒载体上的均匀分散性增强。同时，NdFeB纳米粒子具有很高的氢吸收率，这有助于相邻的被CO活化的NdNiAl纳米粒子氢化并生成CH 4 。

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