CO2能源化导向的氮掺杂碳纳米管负载Cu催化剂的构建及其构效关系的研究

项目名称： CO2能源化导向的氮掺杂碳纳米管负载Cu催化剂的构建及其构效关系的研究

项目编号： No.21207039

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 环境化学

项目作者： 陈礼敏

作者单位： 华南理工大学

项目金额： 25万元

中文摘要： 本项目拟开展CO2能源化研究，通过N2或NH3等离子体技术制备功能化载体氮掺杂碳纳米管(N-CNTs)，利用微波辅助多元醇还原构建均匀单分散的新型双功能催化剂Cu/N-CNTs，以实现CO2低能高效转化制甲醇。通过引入N-CNTs促进底物吸附活化；提高活性Cu物种的分散度；加速产物水的脱附，缓解其副作用；改善催化剂的水热稳定性。项目通过考察Cu/N-CNTs催化CO2/H2合成甲醇的反应性能，表征催化剂活性位的结构和电子性质、反应吸附物种、活性中间物种等，从分子/原子水平上获得催化剂结构与反应性能间的内在联系，建立催化剂结构与水的抑制作用之间的关系，揭示反应历程和反应机理，探索新型高效催化剂的构建规律。研究成果将为实现CO2制燃料产业化、"CO2零排放"提供理论支撑与技术指导，还对改善环境、发展可再生能源转换和存储技术、开发清洁能源、节约化石资源和实现社会经济的可持续发展都有重要意义。

中文关键词： 二氧化碳制甲醇；氮掺杂碳纳米管；Cu/ZrO2/CNTs；构效关系；

英文摘要： We are pursuing the generation of fuels from CO2 hydrogenation and the development of catalysts for these processes. This project is proposed to prepare nitrogen doped carbon nanotubes (N-CNTs) by N2 or NH3 plasma, then synthesize uniform monodispersed bifunctional Cu/N-CNTs catalysts via microwave-assisted polyol reduction technique, the obtained catalysts will be utilized to convert CO2 to methanol with low energy consumption and high efficiency. The introduction of N-CNTs will promote the adsorption and activation of the substrates; increase the dispersity of active Cu species; accelerate product water desorption, alleviating its side effects; improve the catalyst hydrothermal stability. The project is carried out to investigate the catalytic properties of Cu/N-CNTs catalysts for methanol production from CO2/H2, characterize the structural and electronic properties of active species, the adsorbed species and reactive intermediate species, deriving the internal relationship between the catalyst microstructure and the catalytic properties from molecular/atomic level, establishing the relationship between catalyst strucutre and water suppression effects, disclosing the reaction process and mechanisms, exploring the construction rules of novel and efficient catalysts. The project results will provide fundamental

英文关键词： CO2 conversion to methanol；Nitrogen doped carbon nanotubes；Cu/ZrO2/CNTs；Relationship between structure and activity；