{"title":"90 Jahre Plexiglas®","authors":"","doi":"10.1002/ciuz.202370503","DOIUrl":"https://doi.org/10.1002/ciuz.202370503","url":null,"abstract":"","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"57 5","pages":"285"},"PeriodicalIF":0.8,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50123328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ganz Paris träumt von der Liebe? … und von frischer Luft …","authors":"Deike Hatscher","doi":"10.1002/ciuz.202300035","DOIUrl":"https://doi.org/10.1002/ciuz.202300035","url":null,"abstract":"","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"57 5","pages":"350"},"PeriodicalIF":0.8,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50123324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Inhalt: Chemie in unserer Zeit 5/2023","authors":"","doi":"10.1002/ciuz.202370502","DOIUrl":"https://doi.org/10.1002/ciuz.202370502","url":null,"abstract":"","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"57 5","pages":"282-283"},"PeriodicalIF":0.8,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50123327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Vorschau auf Heft 6/2023","authors":"","doi":"10.1002/ciuz.202370505","DOIUrl":"https://doi.org/10.1002/ciuz.202370505","url":null,"abstract":"","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"57 5","pages":"351"},"PeriodicalIF":0.8,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ciuz.202370505","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50123325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dr. Marina Bockelmann, Dr. Maik Becker, Sebastian Stypka, Dr. Stina Bauer, Prof. Dr. Christine Minke, Prof. Dr. Thomas Turek
In this review article we report on the fundamentals and the achieved technical status of the production of “green” hydrogen by water electrolysis. For this sustainable production of hydrogen, only purified water and renewable electrical energy are needed. However, due to the great stability of the water molecule, the energy demand of electrolysis is very high. We show that there are already three technically available technologies (alkaline, PEM and high-temperature electrolysis), each with specific advantages and disadvantages. Future developments focus on reducing the investment for electrolysis plants as well as on decreasing the losses in water splitting, for example through alkaline membrane electrolysis with an elegant combination of the properties of alkaline and PEM electrolysis.
{"title":"Erzeugung von Wasserstoff durch Elektrolyse","authors":"Dr. Marina Bockelmann, Dr. Maik Becker, Sebastian Stypka, Dr. Stina Bauer, Prof. Dr. Christine Minke, Prof. Dr. Thomas Turek","doi":"10.1002/ciuz.202300024","DOIUrl":"10.1002/ciuz.202300024","url":null,"abstract":"<div>\u0000 \u0000 <p>In this review article we report on the fundamentals and the achieved technical status of the production of “green” hydrogen by water electrolysis. For this sustainable production of hydrogen, only purified water and renewable electrical energy are needed. However, due to the great stability of the water molecule, the energy demand of electrolysis is very high. We show that there are already three technically available technologies (alkaline, PEM and high-temperature electrolysis), each with specific advantages and disadvantages. Future developments focus on reducing the investment for electrolysis plants as well as on decreasing the losses in water splitting, for example through alkaline membrane electrolysis with an elegant combination of the properties of alkaline and PEM electrolysis.</p>\u0000 </div>","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"58 1","pages":"29-45"},"PeriodicalIF":0.8,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135879072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Markus Emden, Pitt Hild, Kirsten Kallinna, Livia Murer
Anliegen der in loser Folge erscheinenden Versuche ist es, Impulse für chemische Versuche zu geben, die gefahrlos zu Hause mit haushaltsüblichen Gegenständen durchgeführt werden können. Sie können damit als Quelle für das gemeinsame Ausprobieren mit Kindern dienen, z. B. in Kindergärten oder an Schulen sowie zur Verwendung bei Tagen der offenen Tür. Ein Stückweit sind sie zu verstehen als Antwort auf den oft gehörten Satz: „Ach, Du bist Chemiker/in? Dann mach doch mal eben ein Experiment.“
{"title":"Mineralwasser – voll die Härte","authors":"Markus Emden, Pitt Hild, Kirsten Kallinna, Livia Murer","doi":"10.1002/ciuz.202300021","DOIUrl":"10.1002/ciuz.202300021","url":null,"abstract":"<p>Anliegen der in loser Folge erscheinenden Versuche ist es, Impulse für chemische Versuche zu geben, die gefahrlos zu Hause mit haushaltsüblichen Gegenständen durchgeführt werden können. Sie können damit als Quelle für das gemeinsame Ausprobieren mit Kindern dienen, z. B. in Kindergärten oder an Schulen sowie zur Verwendung bei Tagen der offenen Tür. Ein Stückweit sind sie zu verstehen als Antwort auf den oft gehörten Satz: „Ach, Du bist Chemiker/in? Dann mach doch mal eben ein Experiment.“</p>","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"57 6","pages":"404-407"},"PeriodicalIF":0.8,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43782066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Humans can survive for several weeks without food, several days without water, but only a few minutes without oxygen. Sufficient availability of oxygen in the surrounding air is therefore vital. Particularly in extreme environments such as mines, submarines, tunnels or in high altitudes or aerospace. Technical solutions are therefore required to maintain the oxygen supply in regular operation as well as in the event of accidents. In particular, the role of chemicals and processes used for oxygen fixation and release are highlighted. Nature has also found fascinating ways to deal with the element oxygen and to use it in seemingly hostile places on planet Earth. Thus, in addition to the anatomical structure of the respiratory apparatus of mammals such as whales or of birds, different oxygen transport proteins in the blood are also described.
{"title":"Systeme zur Sauerstoffversorgung","authors":"Dr. Alexander Imhof, Prof. Dr. Fritz E. Kühn","doi":"10.1002/ciuz.202300007","DOIUrl":"10.1002/ciuz.202300007","url":null,"abstract":"<div>\u0000 \u0000 <p>Humans can survive for several weeks without food, several days without water, but only a few minutes without oxygen. Sufficient availability of oxygen in the surrounding air is therefore vital. Particularly in extreme environments such as mines, submarines, tunnels or in high altitudes or aerospace. Technical solutions are therefore required to maintain the oxygen supply in regular operation as well as in the event of accidents. In particular, the role of chemicals and processes used for oxygen fixation and release are highlighted. Nature has also found fascinating ways to deal with the element oxygen and to use it in seemingly hostile places on planet Earth. Thus, in addition to the anatomical structure of the respiratory apparatus of mammals such as whales or of birds, different oxygen transport proteins in the blood are also described.</p>\u0000 </div>","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"58 5","pages":"270-280"},"PeriodicalIF":0.9,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ciuz.202300007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44709325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prof. Dr. Michael W. Tausch, Dr. Jacob Schneidewind
Green hydrogen is a key player in the energy transformation. While the public discourse focuses on green hydrogen produced via photovoltaic or wind power and water electrolysis, this article informs about the state-of-the-art in research on direct water splitting with light. It covers fundamental concepts and processes for water splitting, concrete implementations as well as current challenges for transferring this technology to large-scale applications. In order to overcome the challenges that remain, it is also necessary to integrate this topic into chemistry education. Experiments, digital media, and teaching concepts developed for this purpose are pointed out.
{"title":"Mit Licht zu grünem Wasserstoff","authors":"Prof. Dr. Michael W. Tausch, Dr. Jacob Schneidewind","doi":"10.1002/ciuz.202300016","DOIUrl":"10.1002/ciuz.202300016","url":null,"abstract":"<div>\u0000 \u0000 <p>Green hydrogen is a key player in the energy transformation. While the public discourse focuses on green hydrogen produced via photovoltaic or wind power and water electrolysis, this article informs about the state-of-the-art in research on direct water splitting with light. It covers fundamental concepts and processes for water splitting, concrete implementations as well as current challenges for transferring this technology to large-scale applications. In order to overcome the challenges that remain, it is also necessary to integrate this topic into chemistry education. Experiments, digital media, and teaching concepts developed for this purpose are pointed out.</p>\u0000 </div>","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"58 1","pages":"20-28"},"PeriodicalIF":0.8,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41842700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
So ist es und die bekannte Zeile „Doch an Blumen fehlts im Revier“ ist aus Goethes Osterspaziergang – verfremdet, so wie auch die Überschrift des ersten Artikels über vier Giftpflanzen. Das damals über den Umgang mit Giftpflanzen Geschriebene gilt weiterhin.
{"title":"An gift'gen Pflanzen ist kein Mangel im Revier","authors":"Dieter Sicker","doi":"10.1002/ciuz.202300006","DOIUrl":"10.1002/ciuz.202300006","url":null,"abstract":"<p>So ist es und die bekannte Zeile „Doch an Blumen fehlts im Revier“ ist aus Goethes Osterspaziergang – verfremdet, so wie auch die Überschrift des ersten Artikels über vier Giftpflanzen. Das damals über den Umgang mit Giftpflanzen Geschriebene gilt weiterhin.</p>","PeriodicalId":9911,"journal":{"name":"Chemie in Unserer Zeit","volume":"58 1","pages":"64-69"},"PeriodicalIF":0.8,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47256434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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