Meta The case: Nanocatalytic powders as coating in automotive industry Cu/Pd/Rh doped on Ce/Zr mixed oxide Nanosized copper-based catalyst for automotive: physicochemical characterization. A. Soto Beobide1, A. M. Moschovi2, G. N. Mathioudakis1, M. Kourtelesis2, Z. G Lada1, K. S. Andrikopoulos1,3, L. Syggelou1, V. Dracopoulos1, I. Yakoumis2, G.A. Voyiatzis1 1 Foundation for Research and Technology / Institute of Chemical Engineering Sciences FORTH/ICE-HT, Patras, Greece 2Monolithos Catalysts & Recycling Limited, Athens, Greece 3Department of Physics, University of Patras, Patras, Greece * E-mail address of presenting author: asoto@iceht.forth.gr I) Outline In the automotive industry, catalytic devices accumulate concentrated loading of platinum group metals (PGMs, platinum, palladium, rhodium) as the active catalytic phase. The aim of MONOLITHOS Catalysts Ltd is the partial substitution of an amount of PGMs (mainly platinum) with abundant non-PGMs (transition metals). Several efforts have been made to use transition metals as substitutes and among them copper seems to be one of the best. PROM100 “fresh”: catalyst that has not been used at all PROM100 “aged”: artificially aging by submitting to hydrothermal (10% water) heating at 1050 oC for 4h. EU Directives for simulating more than 60,000Km of mileage of a car. Rama II) www.iceht.forth.gr Nanotechnology is conceived as a Key Enabling Technology, becoming an increasingly research area providing functional materials to many industrial sectors, such as automotive, health, packaging, textiles, construction, etc. The main objective of DIAGONAL project is to increase the understanding on Multi-Component NanoMaterials (MCNM) and High Aspect Ratio Nanoparticles (HARNS) behavior along their life cycle from NM design and production to its application into Nano-Enabled products (NEP). DIAGONAL aims to bring new methodologies to guarantee long-term nanosafety and contribute to fill current gaps in: Risk Assessment, Risk Management and Risk Governance. DIAGONAL will bring Safe-by-Design knowledge and tools to a development stage which can be implemented in the MCNM and HARNs related industries, relying on experimental (in vitro) and modelling (in silico) research to understand and ultimately predict the interactions among the NM components, their transformation products, and between the NMs and the environment, promoting a better understanding of potential adverse effects on human health, and biota. Metallic oxide NPs (Cu, Pd, Rh) over ceramic substrates of CeO2/ZrO2 (automotive catalytic converters for the transformation of toxic gases Physico-chemical characterization of PROM100 catalyst and its transformation along life cycle C) Raman Characterization E) X-ray diffraction, XRD Definition of Nanomaterial According to Commission’s recommendation [1] Prometheus catalyst (PROM100) Material with 50% or more of the particles in the number size distribution, present one or more external dimensions in the size range 1 nm-100 nm A material should be also considered nano when the specific surface area by volume of the material is >60 m2/cm3 D) X-ray photoelectron spectroscopy, XPS A) Gas porosimetry Surface area Specific surface area by volume PROM100 fresh: 81m2/g 528 m2/cm3 (*) PROM100 aged: 1 m2/g 6.5 m2/cm3 *Density (CeZrO4)= 6.52 g/cm3 B) Scanning electron microscopy, SEM PROM100 fresh PROM100 aged 200 300 400 500 600 700 800 Relative Intensity Raman Shift, cm -1 470 615 0=514 nm 200 300 400 500 600 700 800 Relative Intensity Raman Shift, cm-1 472.5 PROM100 fresh CeO2cubic fluorite: intensity peak at 465 cm-1 Ce1-xZrxO2mixed oxides: increasing x value -> shift to 470 cm-1 Broad and weak peak at ~620 cm-1: presence of oxygen vacancy in the fluorite phase which causes defects sites in Ce-Zr oxides for the activity of the catalyst [2] 200 300 400 500 600 700 800 638 616 567 537 383 348 333 306 258 221 190 Raman Shift, cm-1 178 Increase intensity peak Ce1-xZrxO2 at 472 cm-1 New peaks: ZrO2