Journal
APPLIED CATALYSIS A-GENERAL
Volume 616, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2021.118106
Keywords
Au; MgSi-ZSM-12; Base-free; Atmospheric di-oxygen; 2; 5-furandicarboxylic acid
Categories
Funding
- National Natural Science Foundation of China [22072065, U1662107, 21476109]
- Six talent peaks project in Jiangsu Province [JNHB-035]
- Natural Science Foundation of Jiangsu Province [BK20200688]
- China Postdoctoral Science Foundation [2020M681572]
- Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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The MgSi-ZSM-12 catalyst showed excellent activity for the oxidation of HMF into FDCA in the presence of atmospheric dioxygen without the need for externally adding any liquid base. The catalyst exhibited strong adsorption of HMF but negligible adsorption of FDCA, accelerating the production of FDCA under base-free conditions.
Mg-bearing MTW silicalite zeolite, MgSi-ZSM-12, was straightforwardly synthesized by involving an unusual acidic pre-gelation system and engaged as the task-specific support for loading the Au nanoparticles (NPs). The resulting Au/MgSi-ZSM-12 catalyst showed stably excellent activity for the oxidation of HMF into FDCA in the presence of atmospheric dioxygen (O2) without externally adding any liquid base, affording a yield of 87 % and turnover number (TON) of 331 based on the surface Au sites. Superior basicity was evidenced by embedding Mg species into the all-silica zeolitic skeleton, which enables strong, weak, and near-zero affinity towards aldehyde, alcohol, and carboxyl groups, respectively, thus, allows rapid and high-uptake adsorption of HMF, but negligible adsorption of FDCA. This unique feature of the Mg-bearing all-silica zeolite support together with its synergy with the active sites of Au NPs is revealed to accelerate the production of FDCA under the base-free mild condition.
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