One-Step High-Temperature-Synthesized Single-Atom Platinum Catalyst for Efficient Selective Hydrogenation

Qingyuan Bi; Xiaotao Yuan; Yue Lu; Dong Wang; Jian Huang; Rui Si; Manling Sui; Fuqiang Huang

doi:10.34133/2020/9140841

One-Step High-Temperature-Synthesized Single-Atom Platinum Catalyst for Efficient Selective Hydrogenation

Research (Wash D C). 2020 Apr 29:2020:9140841. doi: 10.34133/2020/9140841. eCollection 2020.

Authors

Qingyuan Bi¹, Xiaotao Yuan², Yue Lu³, Dong Wang¹, Jian Huang¹, Rui Si⁴, Manling Sui³, Fuqiang Huang^{1

2}

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
² State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
³ Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, China.
⁴ Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.

Abstract

Although single-atom catalysts significantly improve the atom utilization efficiency, the multistep preparation procedures are complicated and difficult to control. Herein, we demonstrate that one-step in situ synthesis of the single-atom Pt anchored in single-crystal MoC (Pt₁/MoC) by using facile and controllable arc-discharge strategy under extreme conditions. The high temperature (up to 4000°C) provides the sufficient energy for atom dispersion and overall stability by forming thermodynamically favourable metal-support interactions. The high-temperature-stabilized Pt₁/MoC exhibits outstanding performance and excellent thermal stability as durable catalyst for selective quinoline hydrogenation. The initial turnover frequency of 3710 h^-1 is greater than those of previously reported samples by an order of magnitude under 2 MPa H₂ at 100°C. The catalyst also shows broad scope activity toward hydrogenation containing unsaturated groups of C=C, C=N, and C=O. The facile, one-step, and fast arc-discharge method provides an effective avenue for single-atom catalyst fabrication that is conventionally challenging.