This theoretical study was inspired by the perpetual debate over the so-called "dormancy" of the active sites in propylene polymerization, i.e., a drop in their activity after a regioerror (2,1-insertion), which was reported to occur in many (although not all) catalytic systems. To explore the range of possible situations, we have selected two homogeneous systems of fundamentally different stru...

Kinetic modelling of Biofuels: Pyrolysis and Auto-Ignition of Aldehydes Matteo Pelucchi*, Kieran P. Somers, Ultan Burke, Chiara Saggese, Alessio Frassoldati, Eliseo Ranzi, Henry J. Curran, Tiziano Faravelli Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Milano, Italy Combustion Chemistry Centre, National University of Ireland, Galway, Ireland matteo.p...

G. Consolati, F. Quasso, R. Gallo and F. Severini Dipartimento di Fisica and INFM, Politecnico di Milano Piazza Leonardo da Vinci, 32, 20133 Milano, Italy Dipartimento di Chimica Industriale e Ingegneria dei Materiali Universitá di Messina Salita Sperone, 98166 S. Agata di Messina, Italy Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta” Politecnico di Milano Piazza Leonardo da ...

Heterogeneous Ziegler-Natta and homogeneous metallocene catalysts exhibit greatly different active sitenature in olefin polymerization. In our previous study, it was reported that MgCl2-supported titanocenecatalysts can generate both Ziegler-Natta-type and metallocene-type active sites according to the type of activators.The dual active site nature of the supported titanocene catalysts was furt...

Quality Control of Poly(Methyl Methacrylate) to Medical Purpose by Multiple Headspace Extraction Lamia Zuniga Linan,* Anderson Bonon, Nádson M. N. Lima, Rubens Maciel Filho, Flavio Manenti a Instituto de Biofabricação (BIOFABRIS), School of Chemical Engineering. State University of Campinas, UNICAMP, Campinas-SP, Brazil. b Politecnico di Milano, CMIC Dept. “Giulio Natta”, Piazza Leonardo da Vin...

Experimental Approach for the Validation of Odour Dispersion Modelling Laura Capelli*, Licinia Dentoni, Selena Sironi, Jean-Michel Guillot Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Piazza Leonardo da Vinci 32, 20133 Milano, Italy Ecole des Mines d’Alès, Laboratoire Génie de l’Environment Industriel, 6 Av. de Clavières, F-30319 Ales Cedex,...