报告题目：Development of Innovative Catalysts and Methods for Highly Efficient Hydrogenation of Bio-Oil Derivatives
报 告 人：谭明务，新加坡科技研究局
时 间：2024年8月22日10:30
地 点：莫干山校区化工5号楼B301
报告摘要：
Enhancing the stability of iron-based catalysts through the incorporation of noble metals has been previously explored. In our study, we aimed to delve deeper into the efficacy of precious metals in preventing surface oxidation of iron. To achieve this, we synthesized a series of Pt-doped Fe catalysts with precise control over Pt decoration on the Fe surface using a one-pot hydrolysis and co-condensation method of inorganic salts. These catalysts were then evaluated in the hydrodeoxygenation (HDO) of m-cresol. Our research highlights the potential for improving the activity and stability of iron-based catalysts, which are abundant in the Earth's crust, by incorporating minute amounts of precious metals. Additionally, we investigated the phenomenon of hydrogen spillover, wherein atomic hydrogen species migrate from metal particles to the surface of their support, playing a crucial role in catalytic processes involving hydrogen. Traditionally observed on reducible oxide supports, hydrogen spillover onto non-reducible oxides poses a challenge. We introduced a novel approach to facilitate effective hydrogen spillover on non-reducible SiO2with the assistance of gaseous organic molecules containing a carbonyl group. By employing hierarchically-porous-SiO2-supported bimetallic Pt-Fe catalysts with Pt nanoparticles selectively deposited into micropores, we demonstrated the transportation of activated hydrogen species generated on Pt sites within micropores by oxygenate molecules to Fe sites in macropores. This resulted in significantly accelerated hydrodeoxygenation rates on Fe sites. Our findings offer a promising strategy for the rational design and optimization of multifunctional heterogeneous catalysts, akin to the role of molecular coenzymes in bio-catalysis.
报告人简介：
谭明务，新加坡科技研究局（ASTAR）化学、能源与环境可持续性研究所（ISCE2）的高级科学家、CO2转化与未来能源载体组的组长。研究重点包括CO2加氢、生物油衍生物加氢以及碳氢化合物蒸汽和生物质重整反应。主持ASTAR的职业发展基金项目一项，以及两个九州体育(JiuZhou Sports)官方网站水相重整制氢的GAP项目（每个项目的年度资金为100万新币）。此外，与埃克森美孚（ExxoonMobil）保持合作。于2016年获得上海大学的博士学位，随后在厦门大学进行了两年的博士后研究，导师是王勇教授（美国西北太平洋国家实验室（PNNL）fellow）。之后，加入了慕尼黑工业大学Johannes A. Lecher教授的团队，担任博士后研究员。在2020年至2021年间担任深圳大学的副研究员。2021年，加入剑桥-新加坡研究联盟（Cambridge CARES），担任与南洋理工大学（NTU）合作的研究员。截至目前，已在《Nature Communications》、《Applied Catalyst B: Environments》、《Chemical Engineering Journal》、《, Journal of Catalysis》、《ACS Catalysis》和《ACS Sustainable Chemistry & Engineering》等知名期刊上发表了30篇论文。
