ALUMINIUM 2018

••• 7 ••• Innovationen O n the outside, the cluster made of 55 copper and alu- minium atoms looks like a crystal, but chemically it has the proper- ties of an atom. The heterometal- lic superatom which chemists of the Technical University of Mu- nich (TUM) have created provides the prerequisites for developing new, more cost-effective cata- lysts. The research project was funded by the German Research Foundation (DFG), the Alexander von Humboldt Foundation, and the German Chemical Industry Fund (FCI). Chemistry can be expensive. For example, platinum is used to clean exhaust gases. This precious metal acts as a catalyst which speeds up chemical reactions. Without catalysts, it would not be possible to carry out a large num- ber of processes in the chemical industry. Bottom-up approach yields results “Many groups of researchers are experimenting with new material compounds made of lower-cost base metals such as iron, cop- per, or aluminium. However, so far nobody has been able to pre- dict whether, how, and why these catalysts react,” explains Roland Fischer, Professor for Inorganic and Metal-Organic Chemistry at the TUM. “Our goal was to bridge this gap and to create the basis for understanding a new genera- tion of catalysts.” Together with his team, the chem- ist has now uncovered a secret of base metal compounds. “What was new about our approach was that we did not examine exist- ing materials, but instead went bottom-up and built compounds made of individual copper and aluminium atoms”, explains Fischer. Combining two metals at the atomic level requires no small amount of know-how and finesse: within a protective argon atmos- phere, the chemists combined the metal atoms which were bound to organic compounds in a test tube, to which they then added a sol- vent. “Naturally, we hoped that the copper and aluminium atoms would separate from the organic compounds and form a cluster to- gether. But whether they would actually do that and what the result would be was entirely un- clear,” remembers Fischer. Secret of the crystals Hence, the chemists were ex- tremely delighted to find that red- dish-black particles with a diam- eter of up to one millimetre had formed at the bottom of the test tube. X-ray images revealed an extremely complex structure: In each case, 55 copper and alumin- ium atoms were arranged such that they formed a crystal whose surface consisted of 20 equilateral triangles. Crystallographers call such shapes icosahedrons. Additional experi- ments showed that chemically, the crystals react like an individu- al copper atom and are also para- magnetic, which means that they are attracted by a magnetic field. An explanation for the extraor- dinary properties of the metal clusters was provided by Prof. Jean-Yves Saillard from the French university in Rennes: according to him, 43 and 12 aluminium at- oms organize themselves into a “superatom” in which the met- als form a shared electron shell which resembles that of a single metal atom. Hence, the cluster has the chemical properties of an atom. Located on the outermost shell are three valence electrons whose spins align themselves in a magnetic field – hence the ob- served paramagnetism. Knowledge base for newcatalysts The heterometallic superatom by the researchers in Munich is the largest one ever made in the lab. “That it formed spontaneously, i. e. without the input of energy, out of a solution is an extremely remarkable outcome,” empha- sises Fischer. “It shows that the arrangement of 55 atoms con- stitutes an island of stability and hence determines the direction in which the chemical reaction takes place.” The researchers now intend to use the findings of the research project to develop fine-grained and hence highly effective cata- lyst materials. “We are still far away from being able to use it in applications,” emphasises Fischer. “But based on what we have now achieved, we can verify the suit- ability of copper-aluminium clus- ters for catalytic processes and also create clusters made of other promising metals.” In search of materials for cheaper catalysts Chemists create copper-aluminium superatom for developing ne-grained and effective compounds 43 copper and 12 aluminium atoms form a cluster that has the properties of an atom. The heterometallic superatom is the largest ever produced in a lab. Photo: Christian Gemel / TUM Branchen-Newsletter Metals / Tools – 1 x im Monat • Aktuelle Messetermine • Messenews • Branchennews Bleiben Sie auf dem Laufenden! Kostenlos. Hier: https://www.exxpo.com/newsletter The Newsletter is presented by DIE MESSE: www.die-messe.de Trade Fair Schedule Metals / Tools 09-11 October, 2018 ALUMINIUM Düsseldorf, Germany 16-18 October, 2018 HärtereiKongress Cologne, Germany 17-19 October, 2018 indometal Jakarta, Indonesia 23-27 October, 2018 EuroBLECH Hanover, Germany 24-26 October, 2018 Fundiexpo Guadalajara, Mexico 07-09 November, 2018 FMB Bad Salzuflen, Germany 13-16 November, 2018 formnext Frankfurt, Germany 27-30 November, 2018 Metal + Tech Foshan, China 27-29 November, 2018 INDIA ESSEN WELDING & CUTTING Mumbai, India 06-08 December, 2018 ALUCAST NCR, Delhi, India 14-17 January, 2019 SteelFab Sharjah, United Arab Emirates 18-20 January, 2019 IFEX Greater Noida, India 24-23 January, 2019 IMTEX / Tooltech Bangalore, India 30 January-01 February, 2019 IE Freiburg, Germany 05-08 February, 2019 Intec Leipzig, Germany 13-14 February, 2019 Maintenance Schweiz Zurich, Switzerland 13-14 February, 2019 Pumps & Valves Schweiz Zurich, Switzerland Anzeige Messestadt Düsseldorf DieRhein-Metropolepunktetmit regionalerund internationaler Gastronomie | Seite 16 Anzeige Anzeige AuflagengruppeR ,,Bepartof it :DieBranche zu GastaufderWeltleitmesse für MedizinundMedizintechnik MEDICAund COMPAMED 2016 Düsseldorf 14.bis17.November2016 LesenSiehierzuein InterviewaufSeite3 E inenDemonstrator,der aktive Implantatedrahtlos viaUltra- schallmit Energie versorgt, stel- lenWissenschaftlerdes Fraunho- fer-Instituts für Biomedizinische Technik (IBMT) in Sulzbach (Saar- land) auf derMedica inHalle 10, StandG05vor. DieTechnologie isteineAlternati- vezurEnergieversorgungmitBat- terieund Induktion.Die innovati- ve Lösung kommt platzsparend ohne integrierte Batterien aus und ist effizienter als eine induk- tiveEnergieübertragung. Platzsparendund energieeƥzient NeueTechnologieversorgtaktive ImplantateviaUltraschallmitEnergie From extremely sensitive robots towearables forallsituations:The digitalisationofhealthcare ispro- gressing at an unstoppable rate, and this concernsall fields,outpa- tientandclinicalcare,aswellaspa- tientsandphysiciansalike. Medica 2016will reflect this pro- cess – 5,000 exhibitors from around 70 countrieswill be pre- senting tailored solutions forout- patientandclinicalcare. Anunstoppableprocess Digitalwave is sweepingover thehealthcare sector Innovationen Sicherverbunden NeuartigerKunststoff fürLuer- Systeme | Seite 10 Enormaufnahmefähig MaßgeschneiderteAlginate für Wundauflagen | Seite 12 Light therapywithOLED New foundation for future thera- peuticapplications | Page8 Ausdem Inhalt: ePaper LesenSie digital www.exxpo.com/epaper/ medica_2016 Anzeige Readmoreonpage4 D50 Certifiedenterprisemanagement system ISO9001:2008 TUV Rheinland CNCMACHINEDPARTS www.oros.it FRPPHUFLDOH @oros.it SPIRIT OF PRECISION visitusat COMPAMED Düsseldorf Hall 8A StandM07 ANSMANNAG WELTNEUHEIT APPCONNECTED RECHARGEABLEBATTERYPACKS BMS ...seemoreon page14 Hall8B /E30 Havinghugepotential:healthapps Photo:MesseDüsseldorf /ctillmann Ultraschall-Technologie ist eine Alternative bei der Energiever- sorgungaktiver Implantate. Foto:Fraunhofer IBMT /MarkusMichel Whereautomationmeets future: Der internationaleMarktplatz derAutomatisierungsbranche spsipc drives2016 Nürnberg 22.bis24.November2016 Anzeige Anzeige Messestadt Nürnberg Gastronomie-Tipps fürdie Franken-Metropole | Seite 19 AuflagengruppeG LesenSiedaskomplette InterviewaufSeite3 W ie Industrie-4.0-Konzepte inmittelständischenUnter- nehmenumzusetzensind, isteine derKernfragen im Forum „Auto- mationmeets IT“ aufder sps ipc drives (Halle3A-451). „Das Gerüst für Industrie 4.0 stehtweitgehend, zum Beispiel unterdemBegriffRAMI4.0“,sagt PeterFrüauf,stellvertretenderGe- schäftsführer Elektrische Auto- mation imVerbandDeutscherMa- schinen-undAnlagenbau (VDMA). Jetzt gelte es, die Lösungswege indiePraxisumzusetzen,betont er imGesprächmit DIEMESSE . Wiedies gelingen kann,diskutie- rendie Experten aufdem Forum „Automationmeets IT“.Darüber hinausbieteauchderVDMAprak- tische Handreichungen – etwa mit Veröffentlichungenwie dem „Leitfaden Industrie4.0“oderder „Industrie4.0ReadinessStudie“. Industrie4.0:DasGerüst steht Forum„Automationmeets IT“diskutiertPraxis-Umsetzung fürMittelstand Scientists have developed a fle- xible system conceptusing radio frequency identification (RFID) sensors tomonitormachines in industrialenvironments.Through continuouswireless andbattery- freemeasurement of tempera- tureandotherparametersaswell asan intelligentanalysisofsensor data, it becomes possible to de- tect failure risks early and opti- mizemaintenance times. Detecting risksearly New systemusesRFID sensors tomonitormachines Messewelten Schaufensterder Automatisierung Industrie4.0Area,„Automation meets IT“und„MESgoes Automation“ | Seite6 Ausdem Inhalt: ePaper LesenSie digital www.exxpo.com/epaper/ sps_2016 Readmoreonpage 12 RFID sensor transponders can be installed in hard-to-access areasor rotatingmachineparts. Photo:Fraunhofer IPMS Smarte Fertigung in der Industrie 4.0: Das Gerüst steht, nun giltes,dieLösungswegeumzusetzen. Foto:PhoenixContact /VDMA Branchennews Standards required Thechallengeof Industry4.0: Datacommunicationhas tobe secured | Page9 Stand7-550 Halle7A/340 zug t RI n - s r u e Foo Die InternationaleAusstellung fürMetallbearbeitungbetritt in diesem Jahrden ,,DigitalWay AMB2018 Stuttgart 18.bis22.September2018 www.exxpo.com/epaper/amb2018 Anzeige Anzeige Anzeige Anzeige 3D-printingsupportsmilling Structurespreventvibrations inpost-processingof thin-walledparts Oneof themain featuresofad- ditivemanufacturingprocesses such as 3D-printing is that the complexity of the component shapes is virtually unlimited. High surfacequality inmetallic components can frequentlybe achieved only via milling or grindingoperations.Butmilling of thin-walledparts inparticu- lar often cause vibrations which impact negatively on part accuracy and onmachin- ing time. Fraunhofer IPT and ILT devel- oped special-purpose support structureswhich caneliminate these vibrations in post-pro- cessingoperations. Readmoreonpage 12 W elche Aufgaben Industrie- roboter als universelleBe- arbeitungsmaschinen in der Zer- spanung übernehmen können, erleben Besucher der AMB auf der Sonderschau „Innovations- tour–Trendsvonmorgen“. „Industrieroboter sind aufgrund dernahezuunbegrenztenEinsatz- möglichkeitenundgeringenKos- ten einunverzichtbarerBestand- teil vieler Fertigungsbereiche geworden“, sagt Professor Eber- hardAbele,Leiterdes Instituts für Produktionsmanagement, Tech- nologieundWerkzeugmaschinen (PTW). Speziell der Sechsachs- Vertikal-Knickarmroboter biete im Bereich der spanenden Bear- beitung ein großes Innovations- potenzial. DIEMESSE hatte ex- klusivGelegenheit,mitProfessor AbeleüberdieDetailsderSonder- schauzusprechen. RoboteralsuniverselleHelfer „Innovationstour“ inHalle 10mitFokusaufFertigungstechnikvonmorgen LesenSiedaskomplette InterviewaufSeite3 InHalle 10gibtdieSonderschau„Innovationstour“Einblicke in aktuelleTechnologietrends. Foto:PTW ePaper LesenSie digital Stellenmarkt im Innenteil Messestadt |Seite38 Auflagengruppe I HALL 1 / BOOTH 1J30 SWISSMADE Halle 6, Stand 6D50 SENSIBEL – wenn’s drauf ankommt! www.schiess.de vertrieb@schiess.de