Tailoring interfacial microenvironment of palladium-zeolite catalysts for the efficient low-temperature hydrodeoxygenation of vanillin in water

Jiansu Ran, Lujain Alfilfil, Jingwei Li, Ruixue Yangcheng, Zhaohui Liu, Qin Wang, Yuntong Cui, Tong Cao, Min Qiao, Kexin Yao, Daliang Zhang, Jianjian Wang

Research output: Contribution to journalArticlepeer-review

Abstract

Efficient 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.
Original languageEnglish (US)
JournalChemCatChem
DOIs
StatePublished - Apr 22 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-04-29
Acknowledgements: J. 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.

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Catalysis

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