Dimethylfuran as a sustainable product of 5-hydroxymethylfurfural - production and application of a biobased solvent

DiMeFu项目的目的是进一步优化高选择性非均相催化工艺，并随后扩大规模。在之前的DFG项目中，在温和的反应条件下，在甲酸存在下，在负载于N掺杂碳材料上的新型Pd基催化剂上，5-羟甲基糠醛（5-HMF）成功地转化为二甲基呋喃（DMF）。在DiMeFu，追求以下目标：1。通过进一步改进催化剂和调整反应参数优化反应条件，以实现生物基DMF的工业化生产。对催化剂合成、催化反应和产品纯化的完整工艺进行了较大规模的验证.表征产品DMF作为溶剂和萃取剂的性质，以及测试和建立DMF在天然油漆生产中的应用。为了实现这些目标，在-NH 2改性碳载体上合成Pd纳米颗粒的完整过程将从实验室转移到更大规模。根据实验室研究的指导原则，在非均相催化分批工艺中扩大了由生物基5-HMF合成DMF的规模。特别强调的是温和的反应条件的选择和容易分离的最终产品。下一步将对产品进行热纯化。随后，将对该产品作为可持续溶剂和萃取剂的潜在用途进行表征和说明，并对天然染料生产进行测试。该项目的目的是展示完整的工艺链，该工艺链描述并使用最有效的催化剂合成DMF。一个重要的部分是催化剂合成的升级和解决相关问题，例如确保催化活性Pd纳米颗粒在碳载体上的均匀分布。此外，使用该项目开发的催化剂，在温和的反应条件下（最大反应温度为25 ℃），5-HMF将以高选择性的方式成功转化为DMF。10巴H2和160°C）。为此目的，将理解发生的传输过程，并以可能进一步放大的方式描述确切的反应参数。最后，除了DMF在天然油漆和涂料生产中作为可持续溶剂的用途外，还将描述其他应用，例如作为天然物质的萃取剂或作为有机合成中的溶剂。

The aim of the DiMeFu project is to further optimize and subsequent upscale of a highly selective heterogeneously catalyzed process. In a previous DFG project, 5-hydroxymethylfurfural (5-HMF) was successfully converted to dimethylfuran (DMF) in the presence of formic acid over novel Pd-based catalysts supported on N-doped carbon materials under mild reaction conditions. In DiMeFu, the following goals are pursued:1. Optimization of the reaction conditions by further improvement of the catalyst and by adaptation of the reaction parameters for industrial production of bio-based DMF.2. Validation of the complete process consisting of catalyst synthesis, catalytic reaction and product purification on a larger scale.3. Characterization of the product DMF with regard to its properties as a solvent and extraction agent as well as testing and establishing the application of DMF in the production of natural paints.To achieve these objectives, the complete procedure of synthesis of Pd nanoparticles on -NH2 modified carbon supports will be transferred from the laboratory to a larger scale. Following guidelines from the laboratory study, the synthesis of DMF from bio-based 5-HMF is scaled up in a heterogeneously catalyzed batch process. Special emphasis is placed on the choice of mild reaction conditions and easy separation of the final product. Thermal purification of the product will be carried out in the next step. Subsequently, the product will be characterized and specified with regard to its potential use as a sustainable solvent and extraction agent, and tested for natural dye production.The aim of the project is to demonstrate the complete process chain, which describes and uses the most effective catalyst for the synthesis of DMF. An essential part is the upscaling of the catalyst synthesis and solving the related problems, such as ensuring a homogeneous distribution of the catalytically active Pd nanoparticles on the carbon support.Furthermore, 5-HMF will be successfully converted to DMF in a highly selective manner using the catalyst developed in this project under mild reaction conditions (max. 10 bar H2 and 160°C). For this purpose, the occurring transport processes will be understood and the exact reaction parameters will be described in such a way that further upscaling is possible. Finally, besides the use of DMF as a sustainable solvent in the production of natural paints and coatings, other applications such as as an extraction agent for natural substances or as a solvent in organic syntheses will be described.