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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

光催化通常被认为是太阳能驱动的过程，如水分解或太阳能燃料生产;然而，光催化也可以有效地应用于污染物的分解或从生物质生产有用的产品。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。由于其丰富和可用性高，纤维素可能是有价值的化学品和可持续液体燃料的重要来源。然而，由于其稳定性，纤维素的转化仍然是一个重大的挑战。在这个项目中，我们寻求进一步探索纤维素的转化，以充分了解潜在的化学和物理过程，从而开发更高效和有效的光催化过程。主要任务将涉及以下几个方面：1.复制初步研究，并获得对pH值依赖性的更详细分析，并将其与zeta电位表面化学研究2联系起来。开发光催化测试单元，以进行更详细的研究。3.对甲醛、氢气和糖类等小分子进行全面的产品分析。4.优化产品分布，以生产最有用的原料5。研究替代的光催化剂，以寻求更好地利用具有较低带隙材料的太阳光谱