Construction of hierarchical Ga-promoted MFI zeolite supported Ni catalyst for lignin derivatives hydrodeoxygenation

IF 3.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Molecular Catalysis Pub Date : 2025-01-16 DOI:10.1016/j.mcat.2025.114848

Qian Meng , Xin Yin , Cong Liu , Xiaokun Li , Xiangjin Kong

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引用次数: 0

Abstract

Fabricating highly active non-noble metal catalysts for hydrodeoxygenation of lignin derivatives is craving but still a challenge. Herein, hierarchical Ga-promoted Ni/MFI catalysts were built via hydrothermal crystallization, and utilized for the hydrodeoxygenation of vanillin to produce 2‑methoxy-4-methylphenol (MMP). The introduced Ga species were highly dispersed on series Ni/GaMFI catalysts, and framework Ga in Ni/GaMFI catalysts significantly improved the vanillin conversion and MMP selectivity by regulating the distribution of Ni nanoparticles and acid sites, which favored H₂ activation and cleavage of CO bond. The high vanillin conversion (>99 %) and MMP selectivity (>99 %) were obtained on Ni/0.025GaMFI catalyst under the experiment conditions (150 °C, 1.5 MPa H₂ and 4 h), which was attributed to synergetic effect of open structural properties, dispersed Ni nanoparticles and suitable acidity. Finally, Ni/0.025GaMFI catalyst demonstrated excellent activity stability during 5 recycles and universality for hydrodeoxygenation of various lignin derivatives.

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来源期刊

Molecular Catalysis Chemical Engineering-Process Chemistry and Technology

CiteScore

6.90

自引率

10.90%

发文量

700

审稿时长

40 days

期刊介绍： Molecular Catalysis publishes full papers that are original, rigorous, and scholarly contributions examining the molecular and atomic aspects of catalytic activation and reaction mechanisms. The fields covered are: Heterogeneous catalysis including immobilized molecular catalysts Homogeneous catalysis including organocatalysis, organometallic catalysis and biocatalysis Photo- and electrochemistry Theoretical aspects of catalysis analyzed by computational methods