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可以将可再生原料纳入现有的价值链。可以利用现有的基础设施，并可以减少利用可再生原料所涉及的经济限制。将发酵产生的乙醇直接转化为1，3-丁二烯是一种很有前途的方法。有关纯乙醇转化的研究提供了有价值的见解催化剂性能对所观察到的活性和选择性的影响。对于在大量水的存在下将生物乙醇转化为1，3-丁二烯，缺少对结构-活性关系的基本理解，以使知识驱动的催化剂设计具有足够的活性，选择性和稳定性。此外，研究表明，催化剂的孔结构的影响和上级的结果，在流化床反应器相比，填充床表明传质的限制。该项目旨在开发新型结构催化剂，并深入了解基本的结构-活性关系，特别强调以生物乙醇为底物，含水量高达85%。该项目的目的是建立一个知识驱动的催化剂开发的基础，并减少传质效应应用催化剂与定制的纳米范围内的孔结构。

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.