Selective Photocatalytic Conversion of Cellulose into Useful Feedstocks

将纤维素选择性光催化转化为有用的原料

基本信息

批准号：
2104828
负责人：
金额：
--
依托单位：
University of St Andrews
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2018
资助国家：
英国
起止时间：
2018 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2104828
关键词：
Selective Photocatalytic Conversion Cellulose into

项目摘要

Photocatalysis is typically considered for solar driven processes such as water splitting or solar fuels production; however, photocatalysis can also usefully be applied to the decomposition of pollutants or to produce useful products from biomass. Cellulose is the most abundant biological macromolecule on earth and is made up of linear polymers of glucose molecules. Due to its high abundance and availability, cellulose could be a crucial source for valuable chemicals and sustainable liquid fuel. As a consequence of its stability, however, the conversion of cellulose remains a significant challenge.In this project we seek to further explore the conversion of cellulose to develop a full understanding of the underlying chemical and physical processes and hence to develop more efficient and effective photocatalytic processes. The main tasks will relate to the following:1. To replicate preliminary studies and obtain more detailed analysis of the dependence upon pH and relate this to zeta potential surface chemistry studies2. To develop the photocatalytic test cell for more detailed studies. 3. To perform a full product analysis focusing upon small molecules such as formaldehyde, hydrogen as well as saccharides.4. To optimise product distribution for most useful feedstock production5. To investigate alternative photocatalysts seeking better utilisation of the solar spectrum with lower bandgap materials

通常考虑用于太阳能驱动过程（例如水分裂或太阳能生产）的光催化；但是，光催化也可以有效地应用于污染物的分解或从生物质中生产有用的产物。纤维素是地球上最丰富的生物大分子，由葡萄糖分子的线性聚合物组成。由于其丰度高和可用性，纤维素可能是有价值的化学物质和可持续液体燃料的关键来源。然而，由于其稳定性，纤维素的转化仍然是一个重大挑战。在该项目中，我们试图进一步探索纤维素的转化，以完全了解基本的化学和物理过程，并因此发展更有效，有效的光催化过程。主要任务将与以下内容有关：1。复制初步研究并获得对pH的依赖性的更详细分析，并将其与Zeta潜在的表面化学研究相关联2。开发光催化测试细胞以进行更详细的研究。 3。进行完整的产品分析，重点是小分子，例如甲醛，氢和糖水4。为最有用的原料生产优化产品分布5。研究替代光催化剂，寻求使用较低带隙材料更好地利用太阳光谱