Precursor-Driven Catalytic Performances of Al₂O₃-Supported Earth-Abundant Ni Catalysts in the Hydrogenation of Levulinic Acid and Hydroxymethylfurfural into Added-Value Chemicals

• 出版年: Molecules
• 主要な著者: Marcin Jędrzejczyk, Emilia Żyłka, Karolina Chałupka-Śpiewak, Agnieszka M. Ruppert
• フォーマット: 論文
• 言語: 英語
• 出版事項: MDPI AG 2024-06-01
• 主題: nickel catalyst; nickel precursor; levulinic acid; hydroxymethylfurfural; hydrogenation; metal support interaction
• オンライン･アクセス: https://www.mdpi.com/1420-3049/29/13/2963
• ISSN: 1420-3049

It has been shown that the nature of the metal precursor and the thermal effects during calcination determine the physicochemical properties of the catalysts and their catalytic activity in the levulinic acid (LA) and 5-hydroxymethylfurfural (HMF) hydrogenation reactions. The endothermic effect during calcination of the inorganic nickel precursor promoted higher metal dispersion and stronger interaction with the alumina surface. In contrast, the exothermic effects during the calcination of organic nickel precursors resulted in smaller metal dispersion and lower interaction with the support surface. A clear relationship was found between the size of the metal crystallites and the yield of LA hydrogenation reaction. The smaller crystallites were more active in the LA hydrogenation reaction. In turn, the size of the metal particles and their nature of interaction with the surface of the alumina influence the hydrogenation pathways of the HMF.