Development of structured catalysts for the synthesis of 1,3-butadiene based on bio-ethanol

以生物质为基础的大宗化学品的替代生产路线允许将可再生原料纳入既定的价值链。可以利用现有的基础设施，减少使用可再生原料所涉及的经济限制。发酵乙醇直接转化为1，3-丁二烯是一条很有前途的途径。关于纯乙醇转化的研究对催化剂性质对观察到的活性和选择性的影响提供了有价值的见解。对于在大量水存在的情况下将生物乙醇转化为1，3-丁二烯，缺乏对结构-活性关系的基本了解，从而能够以知识为导向设计具有足够活性、选择性和稳定性的催化剂。此外，研究表明催化剂的孔结构的影响，以及与填充床相比，在流化床反应器中的结果更好，这表明传质限制。该项目旨在开发新型结构催化剂，并深入了解基本的构效关系，特别强调以水分含量高达85%的生物乙醇为底物。该项目的目的是为知识驱动的催化剂开发奠定基础，并应用在纳米范围内定制的孔结构催化剂来减少传质效应。

Alternative production routes of bulk chemicals based on biomass allow integrating renewable feedstocks into established value chains. Existing infrastructure can be used and economic constrains involved in the utilization of renewable feedstocks can be reduced. The direct transformation of fermentation derived ethanol to 1,3-butadiene presents a promising approach. Studies concerning the transformation of pure ethanol provide valuable insights into the influence of catalyst properties on the observed activity and selectivity. For the transformation of bioethanol into 1,3-butadiene in the presence of large amounts of water, a fundamental understanding of structure-activity relations to enable a knowledge-driven design of catalysts of sufficient activity, selectivity and stability is missing. Additionally, studies indicate an influence of the pore structure of the catalyst and superior results in fluidized bed reactors compared to packed beds suggesting mass transfer limitations. This project aims for the development of novel structure catalysts and an insight into fundamental structure-activity relations with special emphasis on bioethanol as substrate with a water content of up to 85%. The aim of the project is to establish the base of a knowledge driven catalyst development and to reduce mass transfer effects applying catalysts with tailor-made pore structure in the nanometer range.