One-pot conversion of lignocellulosic biomass to ketones and aromatics over a multifunctional Cu-Ru/ZSM-5 catalyst

Jaya, Gladys Tiffany ¹Insyani, Rizki ¹Park, Jaeyong ¹Barus, Amsalia Florence ¹Sibi, Malayil Gopalan ¹Ranaware, Virendra ¹Verma, Deepak ¹Kim, Jaehoon¹

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作者信息

1. Sungkyunkwan Univ
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Abstract

The complete conversion of lignocellulosic biomass to selective and highly valuable chemicals is challenging because of its inertness and complexity. Herein, we report a direct chemocatalytic route for the complete one-pot conversion of raw woody biomass to cyclic ketones and aromatic monomers over a multifunctional bi-metallic Cu-Ru catalyst on HZSM-5 (Cu-Ru/Z). The Si/Al ratio of HZSM-5 plays an effective role in the product distribution. High-yield ketones (60.9% based on carbon in holocellulose) and aromatics (28.4% based on carbon in lignin) were produced in an aqueous medium. Three strategies, metal domain encapsulation inside the zeolitic framework, SiO2 layer coating, and carbon layer coating, were employed to overcome the weak hydrothermal stability associated with HZSM-5. The carbon-coated Cu-Ru/Z catalyst exhibited high stability up to three reaction cycles. Optimization of the reaction conditions, reaction mechanisms for the selective ketone synthesis, and catalyst deactivation mechanisms are discussed.

Key words

Woody biomass/Chemocatalytic conversion/Ketones/Aromatics/RAY ABSORPTION-EDGE/PYROLYSIS BIO-OIL/IN-SITU FTIR/SELECTIVE HYDROGENATION/ACID SITES/HYDROTHERMAL STABILITY/SUPERCRITICAL WATER/REACTION-MECHANISM/WOODY BIOMASS/RU-CU

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出版年

2022

Applied Catalysis

ISSN：0926-3373

被引量14

参考文献量81

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