Yingwen Li

Title: Innovations of Yingwen Li in Catalytic Oxidation of Lignin

Introduction

Yingwen Li is an accomplished inventor based in Guangzhou, China. He has made significant contributions to the field of chemical engineering, particularly in the area of biomass conversion. His innovative methods focus on sustainable practices and the efficient use of resources.

Latest Patents

Yingwen Li holds a patent for a method titled "Method for preparing maleate by selective catalytic oxidation of lignin." This invention discloses a novel approach that utilizes a heteropolyacid functionalized ionic liquid as a catalyst. The method employs an aqueous alcohol solution as a reaction medium, achieving high-efficiency selective catalytic conversion and ring opening oxidation of biomass lignin. The process operates at a reaction temperature of 110-160°C and an oxygen pressure of 0.5-1.0 MPa for 1-6 hours. The selectivity of maleate produced is higher than 47.83%. The yield and selectivity of the chemicals derived from lignin depolymerization in this invention surpass those of prior art. The ionic liquid catalyst offers advantages such as easy recovery and recycling through simple temperature adjustments. The reaction conditions are mild, making the process green, safe, and easy to operate, suitable for both batch and continuous production. This invention provides a new green pathway for preparing bulk chemicals like maleate from renewable raw materials such as lignin.

Career Highlights

Yingwen Li is affiliated with the South China University of Technology, where he continues to advance research in chemical engineering and sustainable practices. His work has garnered attention for its innovative approach to utilizing biomass for chemical production.

Collaborations

Yingwen Li has collaborated with notable colleagues, including Jinxing Long and Zhenping Cai. Their combined expertise contributes to the advancement of research in the field of catalytic processes and biomass conversion.

Conclusion

Yingwen Li's innovative methods in the catalytic oxidation of lignin represent a significant advancement in sustainable chemical production. His contributions not only enhance the efficiency of chemical processes but also promote the use of renewable resources.