{"title":"Electrolyte Influence on the Electrochemical Oxidation of Anhydrous Methanol to Dry Formaldehyde","authors":"Florian Schwarz, Anna K. Mechler","doi":"10.1002/cite.202400167","DOIUrl":"https://doi.org/10.1002/cite.202400167","url":null,"abstract":"<p>The electrification of the formaldehyde synthesis is investigated as a sustainable alternative to the current thermal approach. The formation of formaldehyde in anhydrous methanol achieves higher Faraday efficiencies than in aqueous conditions, yet operates at higher cell potentials. The electrolyte is an influential factor, and its role is not yet understood. Here, we report on the electrolyte's effect on the electrochemical formaldehyde synthesis in anhydrous methanol. After an electrolyte screening, four electrolytes were chosen for an in-depth analysis of the supporting electrolyte's ion influence. Among the tested supporting electrolytes, the anion dominates the conductivity and viscosity while larger cations favor the formation of formaldehyde. Understanding the electrolyte properties is crucial for large-scale industrial synthesis.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 5","pages":"518-524"},"PeriodicalIF":1.5,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dr. Philipp Röse, M.Sc. Paul Neugebauer, M.Eng. Sonam Tamang, Prof. Dr. Siegfried R. Waldvogel, Prof. Dr.-Ing. Ulrike Krewer
{"title":"Trends and Challenges in Electrifying Technical Organic Synthesis","authors":"Dr. Philipp Röse, M.Sc. Paul Neugebauer, M.Eng. Sonam Tamang, Prof. Dr. Siegfried R. Waldvogel, Prof. Dr.-Ing. Ulrike Krewer","doi":"10.1002/cite.202400155","DOIUrl":"https://doi.org/10.1002/cite.202400155","url":null,"abstract":"<p>Organic electrosynthesis is a potential enabler for the energy and resource transition in the chemical industry as it offers a sustainable alternative to homogeneous or heterogeneous processes for producing fine and commodity chemicals. It utilizes electricity instead of hazardous reagents and, thus, also allows reducing the product's carbon footprint and waste production. It enables dynamic operation and safe operation due to galvanostatic process control. Electro-organic processes are not yet widespread. Engineering tools have not yet been tailored to electro-organic processes, and more quantitative and model-based insight is needed. Extensive adoption in the industry requires also efforts regarding electrode material performance and stability, scalable reactor design, and process digitization. Addressing these issues requires interdisciplinary collaboration, particularly between chemists and engineers, to accelerate process implementation with high efficiency and economic feasibility.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 5","pages":"395-410"},"PeriodicalIF":1.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giuliano Ercolano, Dr. Bettina Stolze, Toni Dageförde, Mona al-Mqbas, Dr. Nico Jurtz, Prof. Dr. Matthias Kraume, Prof. Dr. Friedrich Dinkelacker, Prof. Dr. Ingo Hartmann
{"title":"Alterungsstudie an VWT-Katalysatoren für stationäre Biogas-Motoren mithilfe der CFD\u0000 Aging Study on VWT Catalysts for Stationary Biogas Engines Using CFD","authors":"Giuliano Ercolano, Dr. Bettina Stolze, Toni Dageförde, Mona al-Mqbas, Dr. Nico Jurtz, Prof. Dr. Matthias Kraume, Prof. Dr. Friedrich Dinkelacker, Prof. Dr. Ingo Hartmann","doi":"10.1002/cite.202400108","DOIUrl":"https://doi.org/10.1002/cite.202400108","url":null,"abstract":"<p>The selective catalytic reaction with ammonia has become established to reduce NO<sub>x</sub> emissions during combustion in gas engines. Catalyst application and the introduction of the reducing agent represent a major challenge, especially for small engines. In this work, the aging phenomena of a commercial VWT catalyst after 17 months of operation of a 70-kW<sub>el</sub> biogas gasoline engine are quantitatively determined. Using spatially resolved CFD it can be shown that these have no influence on the activity properties of the compact application.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 4","pages":"287-298"},"PeriodicalIF":1.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}