{"title":"Pretreatment of Ru/TiO2 Catalysts Influences Activity and Selectivity in CO2 Hydrogenation","authors":"Göran Baade, Prof. Robert Güttel","doi":"10.1002/cite.202400139","DOIUrl":"https://doi.org/10.1002/cite.202400139","url":null,"abstract":"<p>The need for a pretreatment strategy for CO and CO<sub>2</sub> hydrogenation is already known for Fe- and Co-based Fischer-Tropsch catalysts but is unexplored for Ru-based catalysts. The aim of this work was to establish a starting point from which to systematically develop pretreatment strategies to maximize the activity, selectivity, and stability of the catalyst. The results show that all pretreatment strategies tested here are equal or better than no pretreatment for the conversion of CO<sub>2</sub>. The pretreatment with CO/H<sub>2</sub> synthesis gas can double the activity, but the advantage is diminished over 80 h of experiment. In contrast, the use of dilute O<sub>2</sub> significantly increases the selectivity towards methane while pure CO<sub>2</sub> significantly increases the selectivity to higher hydrocarbons.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 5","pages":"549-553"},"PeriodicalIF":1.5,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400139","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909636","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}
Henrik Spitzenpfeil, Marius Neumann, Nick Hausen, Prof. Dr. Regina Palkovits, Dr. Stefan Palkovits
{"title":"Artificial Intelligence-Assisted Experimental Optimization of Water Oxidation Catalysts","authors":"Henrik Spitzenpfeil, Marius Neumann, Nick Hausen, Prof. Dr. Regina Palkovits, Dr. Stefan Palkovits","doi":"10.1002/cite.202400156","DOIUrl":"https://doi.org/10.1002/cite.202400156","url":null,"abstract":"<p>Artificial intelligence (AI) methods are very often used to make predictions for datasets that were created externally in arbitrary experiments or on already literature known datasets. In this work, we try to make use of active learning techniques to search for an optimal strategy for the startup-phase of bulk nickel electrodes in the oxygen evolution reaction. The data collected was afterwards reduced in dimensions and used to extract additional information that were learned via an artificial neural network (ANN) on the dataset, respectively.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 5","pages":"472-478"},"PeriodicalIF":1.5,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400156","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909665","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}
Dipl.-Chem. Bastian Hansel, Dipl.-Chem. Konrad Burkmann, Dipl.-Nat. Bianca Störr, Dr. rer. nat. Carsten Pätzold, Prof. Dr. rer. nat. Florian Mertens, Martin Bertau
{"title":"Identification of Electrolyte Salts in Lithium-Ion Battery Black Mass","authors":"Dipl.-Chem. Bastian Hansel, Dipl.-Chem. Konrad Burkmann, Dipl.-Nat. Bianca Störr, Dr. rer. nat. Carsten Pätzold, Prof. Dr. rer. nat. Florian Mertens, Martin Bertau","doi":"10.1002/cite.202400121","DOIUrl":"https://doi.org/10.1002/cite.202400121","url":null,"abstract":"<p>Based on ion chromatographic and thermal analyses, it was demonstrated that the assumption that the presence of PF<sub>6</sub><sup>–</sup> ions in lithium-ion battery (LIB) black mass is due to LiPF<sub>6</sub> residues is incorrect. In the industrial samples investigated, PF<sub>6</sub><sup>–</sup>-containing residues were present in the case of low temperature-pretreated LIB black mass. Based on thermal analysis, a significant proportion of the PF<sub>6</sub><sup>–</sup> species was found to originate from NaPF<sub>6</sub>. The presence of NaPF<sub>6</sub> is due to the use of tap water in the commercial workup process. Due to the transformation of the PF<sub>6</sub><sup>–</sup> species and the associated changes in degradation and hydrolysis behavior, appropriate recycling routes need to be adapted regarding the handling of the conducting salt.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 4","pages":"299-310"},"PeriodicalIF":1.5,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400121","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793482","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}
{"title":"So kann Science Outreach gelingen! – Transferprozess zwischen universitärer Forschung und Schulen\u0000 This is how Science Outreach Can Succeed! – Transfer Process between University and Schools","authors":"Lena Geuer, Prof. Dr. Roland Ulber","doi":"10.1002/cite.202400152","DOIUrl":"https://doi.org/10.1002/cite.202400152","url":null,"abstract":"<p>Daily, science creates new findings that are of fundamental importance for socially relevant topics. These often remain ‘black boxes’ for the society, because the scientific background remains unexplained. Subject-didactic transfer processes are intended to close these gaps by creating educational opportunities from the cooperation of subject didacticians and subject scientists. The Department of Bioprocess Engineering at the RPTU Kaiserslautern-Landau has been involved in science outreach projects for 20 years. In this time, a transfer process has been established that builds a bridge between scientific research and schools. A study is now showing the effect that immersive digital media, such as augmented reality (AR), has on the necessary didactic reconstruction of research-oriented topics.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 4","pages":"324-333"},"PeriodicalIF":1.5,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793870","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}