Innovation on ISMS improves the ability to


image: strong metal phosphide-phosphate support interaction induced by P activation (SMPSI)
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Credit: CHEN Zemin et al.

Supported nanoparticle catalysts have been widely studied as heterogeneous catalysts in industrial catalysis. Strong Metal-Support Interaction (SMSI) is one of the key mechanisms for the design of highly efficient supported catalysts. It performs various functions in general, such as increasing the dispersion of the supported metal and promoting charge transfer. SMSI can also adjust the ultimate catalytic activity and stability of nanoparticles through geometric and electronic modifications.

However, classical WSIS is still subject to challenges such as the contradiction between activity and stability, overcoat instability issues in water-containing reactions, and the replacement of the noble metal with metal catalysts. cheap nobles in industry.

Recently, the research team led by Prof. ZHANG Ying from China University of Science and Technology (USTC) first reported strong metal phosphide and phosphate carrier interaction (SMPSI) and proposed a brand new scheme to improve the catalytic activity, selectivity, stability, anti-oxidation and anti-acid capacity of non-noble metal catalysts. This study, entitled “Strong Metal Phosphide-Phosphate Support Interaction for Enhanced Non-noble Metal Catalysis”, was published in Advanced materials.

The activation of the P species on the support is the key point of SMPSI. This leads to the generation of metal phosphide NPs and core-shell nanostructures formed by the migration of the support over the NPs at the same time. Better than conventional ISMS, the state of metal phosphide encapsulation and charge transfer can be optimally regulated. In addition, the strong interactions of Co2PL/ MnP-3 achieves even better performance than noble metals like Pd / C and Pt / C on catalytic activity and stability while 100% hydrogenating many compounds into value-added fine chemicals. SMPSI construction can also be extended to other systems including Ni2PL/ Mn3(purchase order4)2, Co2PL/ LaPO4, and COPL/ CePO4.

SMPSI provides a novel method of better designs on non-noble metal catalysts and the strong interaction between NPs and supports. In addition, SMPSI makes it possible to replace noble metal catalysts with highly efficient and stable non-noble metal catalysts for severe industrial reactions.

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