Effect of amino-defective-MOF materials on the selective hydrodeoxygenation of fatty acid over Pt-based catalysts
2021
Phan, Dieu-Phuong | Lê, Văn Nhiễu | Nguyen, Thuy Ha | Kim, Han Bom | Park, Eun Duck | Kim, Jinsoo | Lee, Eun Yeol
With the aim of developing more efficient catalysts based on MOF materials for biomass upgrading through the hydrodeoxygenation, a novel Pt/UiO-66-based catalyst was first designed by introducing amino groups, together with creating mixing-linker defect using 5-amino-isophthalic acid as a mixed linker, were successfully synthesized with a microwave-solvothermal method. XPS and CO-chemisorption measurements revealed that the presence of amino groups significantly enhance the reducibility of the PtCl₆²⁻ and PtCl₄²⁻ phases to the Pt⁰ phase. As a result, the catalytic performance of these catalysts in the HDO of oleic acid was enhanced, as demonstrated by the 1.8–3.2-fold higher turnover frequency compared to the original Pt/UiO-66 catalyst. Interestingly, the presence of amino-defective linker facilitated the transition from decarbonylation to the hydrodeoxygenation reaction, as confirmed by the significant increase in C₁₈/C₁₇ ratio. Importantly, the modified catalysts were shown to possess a good catalytic stability, thus preventing coke deposition on the UiO-66 structure.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library