Control of metal–support interaction for tunable CO hydrogenation performance over Ru/TiO2 nanocatalysts

Heyun Lin; Wenzhe Zhang; Huachen Shen; Hailing Yu; Yunlei An; Tiejun Lin; Liangshu Zhong

doi:10.1039/D3NR06208B

Control of metal–support interaction for tunable CO hydrogenation performance over Ru/TiO₂ nanocatalysts†

Heyun Lin,^abc Wenzhe Zhang,^c Huachen Shen,

^ab Hailing Yu,^ab Yunlei An,^a Tiejun Lin

*^ab and Liangshu Zhong

*^abc

Author affiliations

* Corresponding authors

^a Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
E-mail: lintj@sari.ac.cn, zhongls@sari.ac.cn

^b University of Chinese Academy of Sciences, Beijing 100049, P. R. China

^c School of Physical Science and Technology, ShanghaiTech University, Shanghai, China

Abstract

The catalytic behavior of CO hydrogenation can be modulated by metal–support interactions, while the role of the support remains elusive. Herein, we demonstrate that the presence of strong metal–support interactions (SMSI) depends strongly on the crystal phase of TiO₂ (rutile or anatase) and the treatment conditions for the TiO₂ support, which could critically control the activity and selectivity of Ru-based nanocatalysts for CO hydrogenation. High CO conversion and olefin selectivity were observed for Ru/rutile-TiO₂ (Ru/r-TiO₂), while catalysts supported by anatase (a-TiO₂) showed almost no activity. Characterization confirmed that the SMSI effect could be neglected for Ru/r-TiO₂, while it is dominant on Ru/a-TiO₂ after reduction at 300 °C, resulting in the coverage of Ru nanoparticles by TiO_x overlayers. Such SMSI could be suppressed by H₂ treatment of the a-TiO₂ support and the catalytic activity of the as-obtained Ru/a-TiO₂(H₂) can be greatly elevated from almost inactive to >50% CO conversion with >60% olefin selectivity. Further results indicated that the surface reducibility of the TiO₂ support determines the SMSI state and catalytic performance of Ru/TiO₂ in the CO hydrogenation reaction. This work offers an effective strategy to design efficient catalysts for the FTO reaction by regulating the crystal phase of the support.

This article is part of the themed collection: Nanoscale 2024 Emerging Investigators

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Article information

DOI: https://doi.org/10.1039/D3NR06208B
Article type: Paper
Submitted: 05 Dec 2023
Accepted: 14 Feb 2024
First published: 20 Feb 2024
This article is Open Access

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Nanoscale, 2024,16, 6151-6162

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Control of metal–support interaction for tunable CO hydrogenation performance over Ru/TiO₂ nanocatalysts

H. Lin, W. Zhang, H. Shen, H. Yu, Y. An, T. Lin and L. Zhong, Nanoscale, 2024, 16, 6151 DOI: 10.1039/D3NR06208B

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