Hydrogen Production from Formic Acid Using KIT-6 Supported Non-Noble Metal-Based Catalysts.

Autor: Eslek Koyuncu DD; Chemical Engineering Department, Gazi University, Address 1, 06570, Ankara, Turkey., Tug I; Chemical Engineering Department, Gazi University, Address 1, 06570, Ankara, Turkey., Oktar N; Chemical Engineering Department, Gazi University, Address 1, 06570, Ankara, Turkey., Murtezaoglu K; Chemical Engineering Department, Gazi University, Address 1, 06570, Ankara, Turkey.
Jazyk: angličtina
Zdroj: ChemPlusChem [Chempluschem] 2024 Nov 27, pp. e202400665. Date of Electronic Publication: 2024 Nov 27.
DOI: 10.1002/cplu.202400665
Abstrakt: The aim of this study is to investigate the activity of KIT-6 supported nickel (Ni) and cobalt (Co) catalysts, and the effect of Co incorporation to the Ni@KIT-6 catalyst in the formic acid (FA) dehydrogenation. Ni and Co are inexpensive and readily available non-noble transition metals that are considered ideal for dehydrogenation reactions due to their high activity against C-C and C-H bond breaking. In this study, KIT-6 supported catalysts were tested for hydrogen production from FA in a conventionally heated packed-bed continuous-flow system. N 2 adsorption-desorption isotherms of the samples were found to be consistent with Type-IV according to the International Union of Pure and Applied Chemistry (IUPAC) classification. The introduction of metal loading resulted in the preservation of the mesoporous structure of the support material. X-ray diffraction (XRD) patterns of the catalysts exhibited the characteristic amorphous silica structure. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFT) analysis, Lewis acidity of Co-based catalysts was found to be higher than the Ni-based catalysts. The complete formic acid conversion was observed at 200-350 °C. The highest H 2 selectivity was obtained with the 3Ni@KIT-6 catalyst. The Co-based catalysts exhibited relatively lower catalytic activity, which was linked to increased coke formation within these catalysts.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
Externí odkaz: