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Supported Bimetallic NiFe Nanoparticles through Colloid Synthesis for Improved Dry Reforming Performance
ACS Catalysis ( IF 11.3 ) Pub Date : 2017-09-14 00:00:00 , DOI: 10.1021/acscatal.7b02091 Tigran Margossian 1 , Kim Larmier 1 , Sung Min Kim 2 , Frank Krumeich 1 , Christoph Müller 2 , Christophe Copéret 1
ACS Catalysis ( IF 11.3 ) Pub Date : 2017-09-14 00:00:00 , DOI: 10.1021/acscatal.7b02091 Tigran Margossian 1 , Kim Larmier 1 , Sung Min Kim 2 , Frank Krumeich 1 , Christoph Müller 2 , Christophe Copéret 1
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The conversion of methane and carbon dioxide into a synthesis gas, the so-called dry reforming of methane (DRM), suffers from a stability issue caused by coke formation at the surface of the Ni-based catalysts. Using a colloidal approach, we demonstrate that supported 3–4 nm bimetallic NiFe nanoparticles with a Ni/Fe ratio of 3 have an enhanced stability compared to the corresponding pure Ni-based catalyst and a higher activity compared to conventional NiFe catalysts. The active sites for DRM are associated with Ni0, while FeO, observed by operando XAS under DRM conditions, allows for an effective decoking of the metal centers.
中文翻译：
通过胶体合成负载双金属NiFe纳米粒子以改善干重整性能
甲烷和二氧化碳向合成气的转化，即所谓的甲烷干重整（DRM），由于在镍基催化剂表面形成焦炭而导致稳定性问题。使用胶体方法，我们证明了与相应的纯Ni基催化剂相比，Ni / Fe比为3的负载的3–4 nm双金属NiFe纳米颗粒具有增强的稳定性，并且与常规的NiFe催化剂相比具有更高的活性。DRM的活性位点与Ni 0相关，而操作XAS在DRM条件下观察到的FeO可使金属中心有效除焦。
更新日期：2017-09-15
中文翻译：
通过胶体合成负载双金属NiFe纳米粒子以改善干重整性能
甲烷和二氧化碳向合成气的转化，即所谓的甲烷干重整（DRM），由于在镍基催化剂表面形成焦炭而导致稳定性问题。使用胶体方法，我们证明了与相应的纯Ni基催化剂相比，Ni / Fe比为3的负载的3–4 nm双金属NiFe纳米颗粒具有增强的稳定性，并且与常规的NiFe催化剂相比具有更高的活性。DRM的活性位点与Ni 0相关，而操作XAS在DRM条件下观察到的FeO可使金属中心有效除焦。
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