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Sintesi, coordinazione a metalli di transizione e reattività di isonitrili N-funzionalizzati
No full textThe reactivity of Pt(II) isocyanide complexes with primary and secondary aliphatic amines
No full textThe reactivity of Pt(II)-isocyanide complexes with primary and secondary aliphatic amines: synthesis of cationic acyclic diaminocarbene derivatives
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Epoxidation of Terminal Olefins with Hydrogen Peroxide Catalyzed by Cationic pentafluorophenyl Platinum(II) Complexes
No full textSynthesis and cyclization reactions of platinum(Il)-coordinated arsonium-substituted phenyl isocyanides, o-(I-R3As+-CH2)C6H4N C
No full textThe arsonium-substituted isocyanides, o-(I-R3As+CH2)C6H4NC (AsR3 = AsPh3, L-1; AsMePh2, L-2; AsMe2Ph, L-3), were prepared by reaction of o-(chloromethyl)phenyl isocyanide, o-(CH2Cl)C6H4NC, with a slight molar stoichiometric amount of the arsine in the presence of a Mold excess of NaI in acetone at room temperature. The isocyanides L-1-L-3 coordinate to some Pt(II) complexes such as trans-[PtX{o-(I-R3As+CH2)C6H4NC}(PPh3)2] [BF4] (AsR3 = AsPh3, 1; AsMePh2, 2; AsMe2Ph, 3; X = Cl, I) and [PtX {o-(I-R3As+CH2)C6H4NC}(Ph2PCH=CHPPh2)] [BF4] (AsR3 = AsMePh2, 4; X = Cl, I). Complexes 2-4 are converted in CH2Cl2 at room temperature in the presence of NEt3 to the corresponding indolidin-2-ylidene derivatives trans-[PtX{CN(H)-o-C6H4C(AsR3)}(PPh3)2]BF4] (AsR3 =AsPh3, 5; AsMePh2, 6; AsMe2Ph, 7) and [PtX{CN(H)-o-C6H4(AsMePh2)}(Ph2PCH=CHPPh2)][BF4] (8). (C) 2004 Elsevier B.V. All rights reserved
Bioliquids from raw waste animal fats: an alternative renewable energy source
Full text linkThree different waste animal fats (bone, chicken, and tallow) have been studied to evaluate whether they could be used as
bioliquids according to the European Regulation (EC) No.1069/2009. The analyses showed that they contained an unsuitable
amount of free fatty acids (FFA) and impurities content (total sediment) if compared with the standards for power generation (set
by UNI 6579:2009), with the exception of tallow fat (class C, UNI/TS 11163:2018). A series of physical-chemical processes
already applied at industrial scale have been considered to manage the acid value and the impurities content. The FFA esterification
was carried out with methanol, comparing two acid catalysts (sulfuric acid or Amberlyst – 15), followed by neutralization
of the residual acidity with two different bases (ammonia solution or solid sodium carbonate monohydrate) when necessary. The
final purification has been achieved by treatment with powdered activated carbon. In particular, the bone fat was studied as
reference material, having the worst initial physical-chemical characteristics. The UNI/TS 11163:2018 standard would allow to
classify the bioliquid from bone fat belonging to class B, while the one from chicken would require further degumming and
purification processes to reduce the metals, sulfur, and phosphorus content
Mild Catalytic Oxidation of Tertiary Amines to N-Oxides with H2O2 Mediated by Pt(II) Catalyst
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