2026-10-13T23:09:51Z https://www.scidb.cn/oai

10.57760/sciencedb.j00124.00318 2025-11-30T21:09:41Z

2025-11-30 Tuning the Reduction Degree of Ni-Based Catalysts for Selective Hydrogenation of Furfural doi:10.57760/sciencedb.j00124.00318 en The selective hydrogenation of biomass-derived compounds is pivotal for the synthesis of high-value-added chemicals. In this study, Ni2Al-LDO（layered double oxide） metal oxide catalyst featuring highly dispersed surface NiO was synthesized via a structural topological transformation using layered double hydroxides. The catalyst exhibited excellent performance in the hydrogenation of furfural, achieving 91.42% yield of furfuryl alcohol (FOL) at 160 °C and 1.4 MPa H2. Gradual reduction of Ni2Al-LDO produced Ni/NiO mixtures, enabling tunable shift from FOL to tetrahydrofurfuryl alcohol (HFOL) as the NiO content decreased and the Ni content increased. After a two-hour reduction at 700 °C, the HFOL yield reached 93.95%. CO2-TPD, NH3-TPD, and FT-IR measurements revealed that variations in reduction degree on nickel influenced the adsorption behavior of furfural. NiO species could only adsorb the C=O group of furfural, whereas the flat adsorption mode on the metallic Ni surface facilitated the simultaneous adsorption and activation of both the furan ring and the carbonyl group of furfural. Ni-based catalysts; Layered double hydroxides; Reduction degree; Selective hydrogenation Chang Xiaoqing Jia Lingyu Dang Shanshan Lu Tianliang Wang Peng Tu Weifeng Zhang Zhenzhou PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset Science Data Bank