Author
Marco Zecca
Bio: Marco Zecca is an academic researcher from Nuclear Regulatory Commission. The author has contributed to research in topics: Catalysis & Hydroformylation. The author has an hindex of 6, co-authored 11 publications receiving 90 citations.
Topics: Catalysis, Hydroformylation, Acylation, Acrylate, Palladium
Papers
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TL;DR: In this article, the synthesis of poly-N,N -dimethylacrylamide-p -styrylsulfonate (DMAA-SS) with 4 mol% of methylene bis(acrylide) mol%, and SS sodium salt, MBAA as crosslinker is described.
Abstract: The synthesis of poly- N,N -dimethylacrylamide- p -styrylsulfonate (DMAA-SS) with 4 mol% of methylene bis(acrylamide) mol% of methylene bis(acrylamide) (MBAA) as crosslinker is described. Bulk polymerization of water solution of monomers (DMAA, SS sodium salt, MBAA) was carried out under gamma irradiation. Swellability in water and various organic solvents showed mainly hydrophilic character of the resin. The ion-exchange experiments with 1 M hydrochloric acid and with [Pd(NH 3 ) 4 ] 2+ showed very good accessibility of the inner space of the material. Polymer supported [Pd(NH 3 4 ] 2+ was reduced by hydrogen in methanol, sodium borohydride in water and sodium borohydride in ethanol. Under these last conditions uniform distribution of Pd throughout the resin particles was observed. The activated material turned out to be a good catalyst for the hydrogenation of p -nitrotoluene to p -toluidine in methanol under ambient conditions.
27 citations
TL;DR: The [Rh(acacac)(CO) 2 ] complex undergoes facile coordination on macromolecular isocyanides to quantitatively give the [P℘NC) 2 Rh(acAC)(CO)]. This material is the precursor of a heterogeneous, reusable catalyst able to promote the hydroformylation of 1-hexene in toluene at 120°C and 12 MPa, with subsequent quantitative hydrogenation of the aldehydes formed.
18 citations
TL;DR: Palladium acetate (Pd(AcO)2) undergoes easy and quantitative coordination to hydrophilic macromolecular isocyanides to give monoisocyano-Pd[NC]-Pd as mentioned in this paper.
12 citations
TL;DR: In this article, a macromolecular crosslinked copolymers of cyanoethyl acrylate were obtained for dimerization in nitromethane, where the sensitivity of the hybrid catalyst to traces of water turns out to be a limiting factor in its activity and reusability.
9 citations
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TL;DR: The ability of carbon dioxide to act as a ligand in transition metal complexes is now well documented and several coordination modes of CO2 have been described as mentioned in this paper, but activation by coordination is not a necessary prerequisite for catalytic conversion of CO 2 to useful chemicals.
460 citations
TL;DR: In this paper, the preparation and catalytic applications of dispersed metal catalysts supported on organic functional polymers are presented and evaluated, including multifunctional catalysis, e.g. redox-acid.
Abstract: The preparation and catalytic applications of dispersed metal catalysts supported on organic functional polymers are presented. The advantages of these catalysts, such as the easy tailoring with respect to the nature of the used support, the “nanoscale” size control of metal crystallites by the polymer framework, the high accessibility and consequent catalytic activity in a proper liquid or liquid–vapor reaction systems are stressed. Various proposed catalytic processes making use of these materials are presented and evaluated, including multifunctional catalysis, e.g. redox-acid. Interesting peculiar aspects such as the enhancement of the hydrogenation rate by nitrogen containing moieties anchored to the polymer backbone are emphasised. When suitable, a comparison with catalysts based on inorganic supports is given.
278 citations
TL;DR: Asymmetric heterogeneous catalysis is a vivid branch of catalysis, remaining, however, largely a domain of organic chemists as mentioned in this paper The view towards asymmetric heterogenous catalysis adopted in this review is mainly from catalytic science and engineering Not only reaction mechanisms, but also catalytic properties, kinetic regularities, as well as chemical engineering aspects, are covered with the main focus on recent developments
Abstract: Asymmetric heterogeneous catalysis is a vivid branch of catalysis, remaining, however, largely a domain of organic chemists The view towards asymmetric heterogeneous catalysis adopted in this review is mainly from catalytic science and engineering Not only reaction mechanisms, but also catalytic properties, kinetic regularities, as well as chemical engineering aspects, are covered with the main focus on recent developments
223 citations
TL;DR: Corain and Jeřabek as discussed by the authors studied the role of morphology and molecular accessibility in polymer networks, and showed that morphology plays an important role in the success of polymer networks in catalysis and polymer networks.
Abstract: Catalysis and polymer networks — the role of morphology and molecular accessibility B. Corain a, M. Zecca a, K. Jeřabek b,∗ a Universita’ di Padova, Dipartimento di Chimica Inorganica, Metallorganica e Analitica and Centro di Studio sulla Stabilita’ e Reattivita’ dei Composti di Coordinazione, C.N.R., via Marzolo 1, 35131 Padova, Italy b Institute of Chemical Processes Fundamentals, Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Praha 6 Suchdol, Czech Republic
118 citations
TL;DR: In this article, the use of functional resins as designable supports for palladium nanoclusters is reviewed, where data are related to the generation of Pd nanoparticles under various conditions and inside gel-type or macroporous frameworks.
Abstract: The use of functional resins as designable supports for palladium nanoclusters is reviewed. Data are related to the generation of Pd nanoparticles under various conditions and inside gel-type or macroporous frameworks. The combination of different physico-chemical techniques (ISEC, ESR and PGSE NMR) is illustrated as a powerful tool for evaluating nanomorphology and molecular accessibility, mainly of gel-type resins. A few examples of catalytic applications are presented and discussed and prospects for wider utilizations are evaluated.
69 citations