Production of H2-Free Carbon Monoxide from Formic Acid Dehydration: The Catalytic Role of Acid Sites in Sulfated Zirconia

Hyun Ju Lee, Dong Chang Kang, Eun Jeong Kim, Young Woong Suh, Dong Pyo Kim, Haksoo Han, Hyung Ki Min

Research output: Contribution to journalArticlepeer-review

Abstract

The formic acid (CH2O2) decomposition over sulfated zirconia (SZ) catalysts prepared under different synthesis conditions, such as calcination temperature (500–650 °C) and sulfate loading (0–20 wt.%), was investigated. Three sulfate species (tridentate, bridging bidentate, and pyrosulfate) on the SZ catalysts were characterized by using temperature-programmed decomposition (TPDE), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The acidic properties of the SZ catalysts were investigated by the temperature-programmed desorption of iso-propanol (IPA-TPD) and pyridine-adsorbed infrared (Py-IR) spectroscopy and correlated with their catalytic properties in formic acid decomposition. The relative contributions of Brønsted and Lewis acid sites to the formic acid dehydration were compared, and optimal synthetic conditions, such as calcination temperature and sulfate loading, were proposed.

Original languageEnglish
Article number3036
JournalNanomaterials
Volume12
Issue number17
DOIs
Publication statusPublished - 2022 Sept

Bibliographical note

Funding Information:
This work was supported by the C1 Gas Refinery Program (2015M3D3A1A01064899) and the Carbon to X Program (2020M3H7A1098273) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT of the Korean government.

Publisher Copyright:
© 2022 by the authors.

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)

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