Intermetallics in catalysis: An exciting subset of multimetallic catalysts
Intermetallics in catalysis: An exciting subset of multimetallic catalysts
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DOI：
10.1016/j.cattod.2018.05.048
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发表时间：
2019-06-15
期刊：
影响因子：
5.3
通讯作者：
Rioux, Robert M.
中科院分区：
文献类型：
--
作者：
Dasgupta, Anish;Rioux, Robert M.
在这篇文章中，我们强调了金属间化合物在多相催化中日益广泛的应用。我们清楚地讨论了有别于其他多金属系统(如合金、表面改性剂和掺杂剂)的金属间化合物。金属间化合物比无规合金(即固溶体)具有许多属性，是许多工业上相关反应的模型催化剂。我们回顾了用于合成大量金属间化合物的各种方法，并讨论了如何将标准材料表征技术扩展到金属间化合物，以获得关于活性中心形态的重要见解，这是多相催化剂设计中的关键指标。我们进一步总结了金属间化合物在理解几何效应和电子效应引起的反应性和选择性变化方面的应用，重点是确定活性中心的组成和结构因素。最后，我们简要总结了该领域今后取得进展的途径及其对环境和经济作出贡献的潜力。
In this article, we highlight the growing application of intermetallic compounds in heterogeneous catalysis. We clearly discuss intermetallics as distinct from other multi-metallic systems (such as alloys, surface modifiers and dopants). Intermetallics possess a number of attributes over random alloys (i.e., solid solutions) and serve as model catalysts for a number of industrially relevant reactions. We review a variety of methods used for the synthesis of a large number of intermetallic compounds and discuss how standard material characterization techniques can be extended to intermetallics to gain important insight regarding active site morphology, a critical metric in heterogeneous catalyst design. We further summarize the use of intermetallics in understanding changes in reactivity and selectivity due to geometric and electronic effects, with emphasis on determining compositional and structural factors of the active site. We conclude with a brief summary of avenues for future advances in the field and its potential to contribute to environment and economy.