Chemie Ingenieur Technik最新文献

{"title":"Finanzielle Unterstützung für Studierende","authors":"","doi":"10.1002/cite.202471103","DOIUrl":"https://doi.org/10.1002/cite.202471103","url":null,"abstract":"<p>Zum Sommersemester 2025 vergibt die bei der Gesellschaft Deutscher Chemiker (GDCh) eingerichtete August-Wilhelm-von-Hofmann-Stiftung erneut Stipendien. Bachelor-, Diplom- oder Examensstudierende der Chemie und angrenzender Gebiete können ab April 2025 für bis zu 18 Monate eine Förderung in Höhe von 300 Euro pro Monat erhalten. Bewerbungen sind bis zum 1. Februar 2025 über das Online-Portal möglich.</p><p>Studierende der Chemie und angrenzender Gebiete mit sehr guten Studienleistungen, die nur über begrenzte finanzielle Mittel verfügen, können sich um eines der rund 20 Stipendien der August-Wilhelm-von-Hofmann-Stiftung bewerben. Auch Engagement außerhalb des Studiums wird positiv berücksichtigt. Gefördert werden Studierende, die zu Beginn des Sommersemesters 2025 im vierten oder fünften Fachsemester sind. Die Förderung wird nicht auf BAföG-Leistungen angerechnet.</p><p>Mit den August-Wilhelm-von-Hofmann-Stipendien sollen motivierte und talentierte Studierende gefördert werden – vor allem diejenigen mit eingeschränkten finanziellen Möglichkeiten. Die Stiftung geht auf ein 2010 verstorbenes, langjähriges GDCh-Mitglied zurück, das den Großteil seines Vermögens der GDCh vermachte, um begabte Studierende der Chemie zu fördern. Sie ist nach dem ersten Präsidenten der 1867 gegründeten GDCh-Vorläuferorganisation Deutsche Chemische Gesellschaft benannt. Seit ihrer Einführung haben bereits über 300 Studierende von der Förderung profitiert und sind Teil des August-Wilhelm-von-Hofmann-Netzwerks geworden.</p><p>Weitere Informationen und Bewerbung unter <i>www.gdch.de/hofmannstiftung</i></p><p></p><p></p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 11","pages":"1451-1452"},"PeriodicalIF":1.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202471103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524967","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":"Titelbild Chem. Ing. Tech. 11/2024","authors":"","doi":"10.1002/cite.202471101","DOIUrl":"https://doi.org/10.1002/cite.202471101","url":null,"abstract":"<p>Copyright: ©TU Bergakademie Freiberg\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 11","pages":"1445"},"PeriodicalIF":1.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202471101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524557","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":"Teaching 4.0","authors":"Prof. Dr. Martin Bertau,&nbsp;Dr. Ines Aubel","doi":"10.1002/cite.202400116","DOIUrl":"https://doi.org/10.1002/cite.202400116","url":null,"abstract":"&lt;p&gt;When the term Industry 4.0 was coined in 2011, a spirit of optimism about a new, digital age spread. Politicians reacted immediately and as early as 2012, the German Federal Ministry of Education and Research (BMBF) provided universities with funding to support this transformation process in student education.&lt;/p&gt;&lt;p&gt;The special issue Industry 4.0 – Teaching 4.0 shows how dynamic this topic has become in university teaching, which has long been a driver and innovation engine of digital methods. Although the degree of implementation in lectures, tutorials and practical courses varies from university to university, it is nevertheless unmistakable.&lt;/p&gt;&lt;p&gt;A key driving force was certainly the time of the pandemic, when teaching had to be ensured during lockdown. Video lectures and the provision of digital teaching materials were just the beginning. At TU Bergakademie Freiberg, the chemistry practical course was ensured throughout the entire pandemic period, which would not have been possible without the existing infrastructure of digital test stands. Today, the term “remote lab” is used for this, which is ideal at a time when real-time communication is becoming increasingly important and the 5G mobile communications standard has become a location factor. Much will also change in the chemical industry. The traditional control room will evolve into remote control rooms. Similar to call centers, it will be possible to book digital control room times with service providers. Training on such test benches prepares students for their everyday work as industrial chemists at an early stage. Other advantages, such as the continuation of teaching in terms of equal opportunities for pregnant women, show how much the digital transformation in education is closing long overdue gaps. New ways of communication are opening up in lectures, including the participation of foreign-language listeners on the basis of appropriate tools.&lt;/p&gt;&lt;p&gt;The articles in this special issue show the advanced state of university teaching in this country, especially in an international context, and how we can optimally prepare the young generation for the challenges of the future. This also includes methods such as gamification, some of which make experienced teaching staff's hair stand on end. They show how universities are once again taking on a much stronger role in shaping transformation processes. Experienced staff may face serious challenges in dealing with the new technologies. The example of artificial intelligence (AI) is pathognomonic. Instead of dismissing the possibilities of AI, falling into a defensive stance and coming up with sanctioning measures, it would have been a good idea to provide didactic support in dealing with AI at an early stage, impart knowledge and promote creativity.&lt;/p&gt;&lt;p&gt;The transformation towards a new self-image of universities is taking place at a rapid and dynamic pace. Students and teaching staff would do well to approach each other and see this tra","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 11","pages":"1447"},"PeriodicalIF":1.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524962","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":"Inhalt: Chem. Ing. Tech. 11/2024","authors":"","doi":"10.1002/cite.202471102","DOIUrl":"https://doi.org/10.1002/cite.202471102","url":null,"abstract":"","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 11","pages":"1448-1450"},"PeriodicalIF":1.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202471102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524966","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":"Identification of Deactivation Mechanisms by the Periodic Transient Kinetic Method","authors":"Max Gäßler,&nbsp;Prof. Robert Güttel,&nbsp;Jens Friedland","doi":"10.1002/cite.202400096","DOIUrl":"https://doi.org/10.1002/cite.202400096","url":null,"abstract":"<p>The understanding of deactivation processes in heterogeneous catalysis is key for the development of new materials and exploration of new operation windows. In this contribution, the periodic transient kinetic method (PTK) is used to identify and separate catalyst deactivation processes for the first time. The PTK method is applied for a standard Ni/Al₂O₃ catalyst in CO and CO₂ methanation for 24 h and compared to steady-state experiments. For the example reactions, the study exhibits different deactivation behavior for CO and CO₂ methanation. The results demonstrate that the PTK method delivers an insight into the deactivation process and furthermore gives evidence for the underlying mechanism.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 12","pages":"1709-1717"},"PeriodicalIF":1.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708158","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":"Raman Measurements in the Hydroformylation of Decene with Laser Powers of 1 mW in Ex Zones","authors":"Erik Spoor,&nbsp;Steffen Manser,&nbsp;Dr. Oliver Mandal,&nbsp;Melanie Bruch,&nbsp;Franz-Josef Nagler,&nbsp;Karsten Duch,&nbsp;Dr. Markus Illner,&nbsp;Prof. Dr. Jens-Uwe Repke,&nbsp;Prof. Dr. Matthias Rädle","doi":"10.1002/cite.202400058","DOIUrl":"https://doi.org/10.1002/cite.202400058","url":null,"abstract":"<p>A custom-made Raman setup is improved and adjusted to allow its use in Ex zones by using a 1-mW laser and no optical focusing elements. The application under consideration is the hydroformylation of decene to undecanal, which must take place under explosion protection. To investigate the dispersive mixture, a separation takes place in a phase separation cell in which the Raman probe performs measurements. It can be shown that, with the use of highly sensitive detectors, even very low excitation powers can lead to a processable signal, and thus the application of Raman measurement technology far below the requirements of explosion protection is possible.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 3","pages":"204-212"},"PeriodicalIF":1.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565402","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":"Process Intensification via Structured Catalysts: Production of Sugar Alcohols","authors":"Prof. Tapio Salmi,&nbsp;German Araujo Barahona,&nbsp;Dr. Ali Najarnezhadmashhadi,&nbsp;Dr. Catarina Braz,&nbsp;Alberto Goicoechea Torres,&nbsp;Maria Ciaramella,&nbsp;Emilia Ares,&nbsp;Prof. Vincenzo Russo,&nbsp;Prof. Juan Garcia Serna,&nbsp;Dr. Kari Eränen,&nbsp;Prof. Johan Wärnå,&nbsp;Prof. Henri Matos,&nbsp;Prof. Dmitry Murzin","doi":"10.1002/cite.202400087","DOIUrl":"https://doi.org/10.1002/cite.202400087","url":null,"abstract":"<p>With the aid of structured catalysts and reactors, such as monoliths, solid foams, and 3D printed structures, the limitations of conventional slurry and packed-bed reactors can be surmounted. Multiphase mathematical models were presented for solid foam structures and the models were verified for the hydrogenation of arabinose, galactose, and xylose to the corresponding sugar alcohols. High product selectivities were obtained in batch and continuous experiments. Three kinetic models were considered: a competitive adsorption model, a semi-competitive adsorption model as well as a non-competitive adsorption model for sugar monomers and hydrogen. The models gave a good reproduction of the data, but the semi-competitive adsorption model was the most plausible one because of the size difference between adsorbed sugar and hydrogen molecules.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 12","pages":"1642-1656"},"PeriodicalIF":1.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708068","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":"Nonlinear Frequency Response Analysis of Distributed Parameter Systems with One Spatial Coordinate","authors":"Dr. Luka Živković,&nbsp;Prof. Dr. Menka Petkovska","doi":"10.1002/cite.202400084","DOIUrl":"https://doi.org/10.1002/cite.202400084","url":null,"abstract":"<p>The objective of this paper is to investigate possible strategies for applying nonlinear frequency response (NFR) analysis based on the concept of higher-order frequency response functions to distributed parameter systems. Three approaches are presented and compared: one based on applying the existing procedure directly to the partial differential model, and two based on approximation of the distributed parameter system with a series of lumped parameter segments. One of them treats the complete series of segments integrally, while the other treats it segment by segment, so it uses only the model of a single segment. A simple example, an isothermal plug-flow reactor with a simple reaction mechanism, is used as a case study. Pros and cons for all three approaches are given.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 12","pages":"1604-1612"},"PeriodicalIF":1.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From Bodenstein to Péclet – Dimensionless Numbers for Axial Dispersion in Chemical Reactors","authors":"Prof. Dr.-Ing. Jens Bremer,&nbsp;Prof. Dr.-Ing. Thomas Turek","doi":"10.1002/cite.202400102","DOIUrl":"https://doi.org/10.1002/cite.202400102","url":null,"abstract":"<p>In the present contribution, the historical development of dimensionless numbers describing axial mixing effects in chemical reactors is analyzed. While the Bodenstein number has become established in Europe, the American literature often uses the Péclet number for this purpose. A journey through the historical reaction engineering literature shows that the development was complex and that Langmuir's decisive role in particular has hardly been acknowledged to date. Unfortunately, despite decades of using dimensionless numbers for mass and heat transport in chemical reactors, no consensus has yet been reached on a uniformly accepted nomenclature. To remedy this shortcoming, a proposal for consistently defined numbers at the molecular and the reactor level is made.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 12","pages":"1562-1569"},"PeriodicalIF":1.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707941","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":"Fouling During Polymerization in Different Continuous Reactor Setups","authors":"Stefan Welzel,&nbsp;Prof. Ulrich Nieken","doi":"10.1002/cite.202400086","DOIUrl":"https://doi.org/10.1002/cite.202400086","url":null,"abstract":"<p>Fouling in continuous reactors presents a significant challenge in the process intensification of specialty polymers. While in continuous stirred tank reactors (CSTRs) fouling is minimal, tubular reactors experience severe fouling, sometimes leading to complete blockage. Therefore, it is crucial to understand process and design conditions contributing to deposit formation. In this work, the impact of geometry, mixing elements, novel coatings, and ultrasonic waves are tested on tubular reactors for the polymerization of polyvinylpyrrolidone.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"96 12","pages":"1632-1641"},"PeriodicalIF":1.5,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400086","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707581","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}