Tailoring interfacial microenvironment of palladium-zeolite catalysts for the efficient low-temperature hydrodeoxygenation of vanillin in water
ChemCatChem - 2022 - Ran - Tailoring interfacial microenvironment of palladium‐zeolite catalysts for the efficient.pdf
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KAUST DepartmentChemical Science Program
Physical Science and Engineering (PSE) Division
Advanced Membranes and Porous Materials Research Center
Embargo End Date2023-04-22
Permanent link to this recordhttp://hdl.handle.net/10754/676635
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AbstractEfficient low-temperature hydrodeoxygenation (HDO) of lignin derivatives to produce biofuels and high value-added chemicals is still of challenge. Here, we have constructed a high active and stable 0.2 wt.% Pd/MS-HZSM-5(30) catalyst, and 94.7% yield of 2-methoxy-4-methylphenol (MMP) can be achieved in HDO of vanillin (VAN, a typical platform molecule of lignin derivatives) under milder reaction conditions (60 °C, 5 h, molar ratio of VAN/Pd = 1200, water phase), outperforming the most works reported recently. Detailed experimental and mechanistic studies demonstrated that the superior catalytic performance was due to the rapid hydrogenolysis of generated intermediate (vanillyl alcohol, VAL) to MMP proceeded in an interfacial microenvironmental created by Pd NPs and acidic sites in Pd/MS-HZSM-5(30). These new insights will provide potential guidance for the efficient low-temperature production of biofuels and valuable chemicals from lignin derivatives or raw lignin.
CitationRan, J., Alfilfil, L., Li, J., Yangcheng, R., Liu, Z., Wang, Q., Cui, Y., Cao, T., Qiao, M., Yao, K., Zhang, D., & Wang, J. (2022). Tailoring interfacial microenvironment of palladium-zeolite catalysts for the efficient low-temperature hydrodeoxygenation of vanillin in water. ChemCatChem. Portico. https://doi.org/10.1002/cctc.202200397
SponsorsJ. Wang thanks to the final support from National Natural Science Foundation of China (21902016) and Fundamental Research Funds for the Central Universities (2019CDQYHG026). This research used resources of Analytical and Testing Center of Chongqing University.