Single-atom and small-cluster Pt induced by Sn (IV) sites confined in an LDH lattice for catalytic reforming

• A facile and practical way to achieve the high dispersion of Pt is presented.
• Sn (IV) sites are highly dispersed and confined in the brucite-like lattices of LDHs.
• The Pt sites induced by Sn (IV) mainly exist in single atoms and small clusters.
• The catalysts inhibit hydrogenolysis and promote cyclization in n-heptane reforming.

Conventional supported Pt for industrial catalytic reforming exhibits high conversion, but suffers low selectivity due to the hydrogenolysis reaction. The development of highly dispersed Pt offers the opportunity to settle this problem. Here, a supported Pt, with Pt dispersed in single atoms plus small clusters with fewer than 10 atoms (91%) on Sn-containing mixed metal oxides, has been prepared by the induction of a Sn component confined in the lattices of brucite-like layers of layered double hydroxides. Pt in single-atom and small-cluster dispersion effectively inhibits hydrogenolysis and significantly improves the selectivity to cyclization products in the n-heptane reforming reaction.

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