A reduction of the amount of noble metal required for their production is an important contribution to a sustainable resource use. “Our approach will significantly improve the catalyst stability and ensure the formation of active noble-metal clusters even with a very low amount of noble metal used,” says Dr. Daria Gashnikova from KIT’s Institute for Chemical Technology and Polymer Chemistry (ITCP), who is the lead author of the study. To obtain the best possible catalytic performance using the smallest possible amount of noble metals, the ITCP researchers investigated frequently used supported catalysts atom by atom. In these supported catalysts, the material where the reaction takes place is finely distributed on the support as small nanoparticles. These clusters are dynamic and change their structure depending on the reaction conditions. They can combine with each other and grow into larger particles so that fewer surface atoms are available for the reaction. However, they can also break down into single atoms that are ineffective on their own. Both phenomena reduce the catalytic performance. The novel concept developed by the ITCP researches solves this problem by taking advantage of the varying interactions of noble metals with different support materials. Xing Linkedin Facebook X E-mail English Deutsch Espa?ol Fran?ais Loading... Bookmark Bookmark list Bookmark Product of the week Gas Autosampler for High Sample Throughput and Contamination-Free Results News Zurück Discover News Subscribe to Newsletter News We bring you up to date at all times: Discover the latest news from the chemical industry, analytics, lab technology and process engineering. Researched by us so you don't have to. 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Bookmark list Xing Linkedin Facebook X E-mail EN English Deutsch Espa?ol Fran?ais My Chemeurope My watchlist (0) E-mail address Password Login Save login data Forgot your password? Register Note The function "Store search" is only available to registered users. Login Register Important information Currently, you are not logged in to my.chemeurope.com. Therefore, you can remember a maximum of 5 contents. Login Register Home News Concept for efficiency-enhanced nobl ... Share by Xing Share by Linkedin Share by Facebook Share by X Share by email Loading... Bookmark Bookmark list Bookmark Print Subscribe to newsletter Concept for efficiency-enhanced noble-metal catalysts New approach for the production of resource-saving and durable catalysts benefits from varying interactions between noble metals and different carrier materials 09-Aug-2024 Noble-metal catalysts are used in many processes in the chemical industry. A reduction of the amount of noble metal required for their production is an important contribution to a sustainable resource use. “Our approach will significantly improve the catalyst stability and ensure the formation of active noble-metal clusters even with a very low amount of noble metal used,” says Dr. Daria Gashnikova from KIT’s Institute for Chemical Technology and Polymer Chemistry (ITCP), who is the lead author of the study. To obtain the best possible catalytic performance using the smallest possible amount of noble metals, the ITCP researchers investigated frequently used supported catalysts atom by atom. In these supported catalysts, the material where the reaction takes place is finely distributed on the support as small nanoparticles. These clusters are dynamic and change their structure depending on the reaction conditions. They can combine with each other and grow into larger particles so that fewer surface atoms are available for the reaction. However, they can also break down into single atoms that are ineffective on their own. Both phenomena reduce the catalytic performance. The novel concept developed by the ITCP researches solves this problem by taking advantage of the varying interactions of noble metals with different support materials. Nanometer-sized palladium particles on ceria “islands” make noble-metal catalysts stable and efficient. Foto: ITCP, KIT Newly Designed Support Material – Noble-Metal Atoms Gather to Form Ceria “Islands” “Noble metals, such as Palladium, tend to bond intensely with ceria, but hardly interact with aluminum oxide,” explains Gashnikova. “This is why we applied palladium to tiny ceria ‘nano-islands’ which in turn were finely distributed on aluminum oxide,” says the scientist. The optimization of the support material ensures that the noble metal atoms preferably form sites on the ceria islands. The distance between the islands on the one hand and the limited mobility of ceria-bound palladium on the other hand prevent both the formation of excessively large clusters and the decomposition of the palladium into single atoms. The size of the noble-metal clusters is defined by the number of noble-metal atoms on the individual ceria islands. “Our dream is to walk the fine line during the entire lifetime of the catalyst, and, if possible, to stabilize small particles consisting of only ten to 50 atoms,” says Professor Jan-Dierk Grunwaldt, member of the ITCP Management team and spokesperson of the Collaborative Research Center (CRC) 1441, “TrackAct”. Original publication "Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO2 Nano-Islands"; Angewandte Chemie https://www.chemeurope.com/en/news/1184151/concept-for-efficiency-enhanced-noble-metal-catalysts.html Two conductors of a chemical reaction Watching the reaction live Read news Most read news 1 Pocket-sized invention revolutionizes ability to detect harmful materials 2 Mining rare earth metals from electronic waste 3 Green hydrogen from direct seawater electrolysis- experts warn against hype 4 Which research and innovation approaches can help the EU achieve a sustainable supply of critical raw materials 5 Maximizing Hydrogen Peroxide Formation during Water Electrolysis Original publication "Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO2 Nano-Islands"; Angewandte Chemie Topics catalysts noble metal catalysts nanoparticles cerium oxides Show all Show less Organizations KIT Other news from the department science Researchers reveal atomic-scale details of catalysts’ active sites New technique from the CNSI at UCLA may lead to design approaches that optimize the performance of chemical reactions Read news World’s highest-performance superconducting wire segment fabricated at UB New study details how large-scale, cost-effective use of high-temperature superconducting wire is another step closer to reality Read news Engineers develop general, high-speed technology to model, understand catalytic reactions Read news New solution for green hydrogen production Scientists at Paderborn University research carbon materials for photocatalysis Read news Accelerated development and manufacturing processes for rubber compounds Software supports formulation and processing conditions for tire treads Read news Understanding microplastics - with high-speed cameras How microplastic particles spread in the ocean depends on microscopic details Read news Revolutionary microfluidic sensors enable real-time detection of multiple heavy metals in water Read news Making PEM electrolysis cost-efficient and scalable Carbon-based bipolar plates have the potential to replace titanium bipolar plates in the electrolysis stack Read news Sustainable and reversible 3D printing method uses minimal ingredients and steps The work has the potential to make materials manufacturing more sustainable and environmentally friendly Read news What gave the first molecules their stability? 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The latest industry news, product highlights and innovations - compact and easy to understand in your inbox. Researched by us so you don't have to. Subscribe to newsletter Most read news Pocket-sized invention revolutionizes ability to detect harmful materials The low-cost cellphone-based Raman spectrometer system can make identifications of unknown biological molecules within minutes Read news Mining rare earth metals from electronic waste Start-up wants to turn waste into treasure Read news Green hydrogen from direct seawater electrolysis- experts warn against hype No need for new development Read news Which research and innovation approaches can help the EU achieve a sustainable supply of critical raw materials Three sets of measures for greater independence on the raw materials market Read news Maximizing Hydrogen Peroxide Formation during Water Electrolysis Killing two birds with one stone Read news Producing Hydrogen and Fertilizer at The Same Time This new concept could allow the needs of previously separate industries to be combined Read news Innovative battery design: more energy and less environmental impact Optimised method makes batteries greener Read news Researchers work to create biodegradable bioplastics from food waste Use of microorganisms to convert food waste into fats, which are then processed into bioplastics Read news On the way to emission-free mining: extracting metals with microorganisms Innovative process for the bioleaching of copper, indium and zinc developed Read news Electrolysis meets "Direct Air Capture" The "Air2Chem" project is developing an economical process for converting CO2 from the air into chemical base materials such as ethylene or syngas Read news Malvern Panalytical agrees to acquire Micromeritics, to become world leaders in materials characterization Read news How solid-state batteries degrade What happens during operation? 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