Humic acid-derived graphene oxide-like (HAGO) was prepared through high-temperature pyrolysis using humic acid as the precursor. With HAGO serving as the support, a Pt-Co bimetallic catalyst was synthesized via solution adsorption method in the presence of complexing agents. The catalyst was employed for the catalytic hydrogenation of 5-hydroxymethylfurfural (5-HMF) to 2,5-dimethylfuran (2,5-DMF). The effects of catalyst preparation parameters including types and dosages of complexing agents, and calcination temperature, as well as reaction process conditions on catalytic activity were investigated. It was revealed that the Pt-Co/HAGO catalyst, prepared with 8-hydroxyquinoline (8-HQ) as the Pt complexing agent and polyacrylamide (PAM) as the Co complexing agent, exhibited excellent catalytic activity. Specifically, when the ratio of 8-HQ to Pt was 2:1 and that of PAM to Co was 3:1, the yield of 2,5-DMF reached 92.1% under the reaction conditions of 200 ℃, 3.0 MPa H 2 , and 8 h. Additionally, the catalyst demonstrated good reusability.
Hao et al. (Mon,) studied this question.