将生物基原料转化为可再生的聚合物单体等关键化学品对于构建面向未来的基于生物经济的化学品制造至关重要，本项目旨在发展和研制衣康酸（IA）及柠檬酸催化脱羧选择转化制甲基丙烯酸（MAA）的多相催化新体系。以探索和开发生物基MAA的高效合成新工艺为目标，系统研究本课题组近年发展起来的由类吡啶氮杂纳米碳与Pd等金属复合的双功能金属-固体碱催化剂的活性/选择性变化规律；深入认识载体表面碱性质、金属组分分散状态及其与固体碱相互作用与催化活性、选择性和稳定性的关系；借助表面科学研究金属-固体碱界面的微观结构及电子特性，结合原位谱学表征和理论计算，阐明其微观特性与其催化活性和选择性之间的关联，创制新型高效 IA及柠檬酸选择脱羧催化剂。系统明确相关过程选择转化作用机制，拓展催化剂设计理念，发现和创制生物基多羧酸增值利用的高效催化体系，为发展相应生物质制可再生聚合物单体新技术提供理论指导和科学基础。

The conversion of bio-based feedstocks to renewable monomers and other industrially important chemicals is of great importance in the transition from a fossil fuel to a bio-based economy. In this project the research will be mainly focused on the development of novel heterogeneous catalytic systems for the direct decarboxylative conversion of itaconic and citric acids to methacrylic acid (MAA). Based on our recently reported bi-function catalyst material which combines pyridinic N-doped nanocarbon and Pd-based noble metals, systematic study will be carried out in order to investigate the relationship between the catalytic selectivity, activity, stability, reaction intermediates and various factors, such as the structure of active sites, basicity, porosities. A number of techniques, such as high resolution XRD, HRTEM, NMR and theoretical simulation, will be used. The research work is expected to provide new information on the design of catalysts for the direct conversion of biobased polyacids to MAA.