Hydrogenation of levulinic acid to γ-valerolactone over single-atom Pt confined in Sn-modified MIL-101(Fe)

Runze Zhang; Yinghao Wang; Wendi Zhang; Yaowei Lu; Qinghu Tang; Qiue Cao; Bang Gu; Wenhao Fang

doi:10.1039/d3cc02573j

Hydrogenation of levulinic acid to γ-valerolactone over single-atom Pt confined in Sn-modified MIL-101(Fe)

Chem Commun (Camb). 2023 Jul 20;59(59):9134-9137. doi: 10.1039/d3cc02573j.

Authors

Runze Zhang¹, Yinghao Wang¹, Wendi Zhang¹, Yaowei Lu¹, Qinghu Tang², Qiue Cao¹, Bang Gu¹, Wenhao Fang¹

Affiliations

¹ School of Chemical Science and Technology, Yunnan University, 2 North Cuihu Road, Kunming 650091, China. gubang@ynu.edu.cn.
² School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.

PMID: 37409424
DOI: 10.1039/d3cc02573j

Abstract

We synthesize a Sn-modified MIL-101(Fe), which can confine Pt to the single-atom scale. This novel Pt@MIL(FeSn) catalyst efficiently hydrogenates levulinic acid to γ-valerolactone (TOF: 1386 h^-1, yield: >99%) at only 100 °C and 1 MPa of H₂via α-angelica lactone as an intermediate. This could be the first report on switching the reaction path from 4-hydroxypentanoic acid to α-angelica lactone under very mild conditions. Incorporating Sn into MIL-101(Fe) enables the creation of abundant micro-pores less than 1 nm and Lewis acidic sites that stabilize Pt⁰ atoms. The ensemble of active Pt atoms and a Lewis acid can synergistically enhance adsorption of the CO bond and facilitate dehydrative cyclization of levulinic acid.