Supported nanoparticles are broadly employed in industrial catalytic processes, where the active sites can be tuned by metal-support interactions (MSIs). Although it is well accepted that supports can modify the chemistry of metal nanoparticles, systematic utilization of MSIs for achieving desired catalytic performance is still challenging. The developments of supports with appropriate chemical properties and identification of the resulting active sites are the main barriers. Here, we develop two-dimensional transition metal carbides (MXenes) supported platinum as efficient catalysts for light alkane dehydrogenations. Ordered Pt₃Ti and surface Pt₃Nb intermetallic compound nanoparticles are formed via reactive metal-support interactions on Pt/Ti₃C₂T_x and Pt/Nb₂CT_x catalysts, respectively. MXene supports modulate the nature of the active sites, making them highly selective toward C-H activation. Such exploitation of the MSIs makes MXenes promising platforms with versatile chemical reactivity and tunability for facile design of supported intermetallic nanoparticles over a wide range of compositions and structures.

中文翻译：

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二维过渡金属碳化物作为载体，用于调节催化纳米颗粒的化学性质。

负载的纳米颗粒广泛用于工业催化过程中，其中的活性位点可通过金属-载体相互作用（MSI）进行调节。尽管人们公认载体可以改变金属纳米粒子的化学性质，但为获得所需的催化性能而系统地利用MSI仍然具有挑战性。具有适当化学性质的载体的发展以及所产生的活性位点的识别是主要障碍。在这里，我们开发了二维过渡金属碳化物（MXenes）负载的铂，作为轻链烷烃脱氢的有效催化剂。通过Pt / Ti ₃ C上的反应性金属-载体相互作用形成有序的Pt ₃ Ti和表面Pt ₃ Nb金属间化合物纳米颗粒_{分别使用2} T _x和Pt / Nb ₂ CT _x催化剂。MXene支持物调节活性位点的性质，使其对CH活化具有高度选择性。对MSI的这种利用使MXene具有广阔的化学反应活性和可调性，成为了在广泛的组成和结构上轻松设计负载型金属间纳米粒子的有前途的平台。