Journal ArticleDOI
Anchored ironporphyrins—the role of talc-aminofunctionalyzed phyllosilicates in the catalysis of oxidation of alkanes and alkenes
André Luiz de Faria,Claudio Airoldi,Fabio Gorzoni Doro,Maria Gardênia Fonseca,Marilda das Dores Assis +4 more
TLDR
FeFeTFPPCl [5,10,15,20-tetrakis(pentafluorophenyl)porphyrin iron(III) chloride] has been covalently supported on two series of previously aminated phyllosilicates, Tal x (natural) and Sil x (synthesized through sol/gel process), where x (=1−3) represents the length of the organic chain binding the ironporphrin to the support as mentioned in this paper.Abstract:
FeTFPPCl [5,10,15,20-tetrakis(pentafluorophenyl)porphyrin iron(III) chloride] has been covalently supported on two series of previously aminated phyllosilicates, Tal x (natural) and Sil x (synthesized through sol/gel process), where x (=1–3) represents the length of the organic chain (“arms”) binding the ironporphyrin to the support These systems have been characterized (UV-Vis, IR and EPR) and used as catalysts for the oxidation of alkanes and alkenes by iodosylbenzene and hydrogen peroxide All systems proved to be efficient catalysts for cyclohexane hydroxylation and alkene epoxidation with both oxidants FeTal x are better catalysts than FeSil x for all the investigated substrates The intermediate “arms” of FeTal2 have been the most adequate since they are not short enough to maintain the ironporphyrin near the polar support or long enough to favor axial bis-coordination of the free amino group to the iron center Protection of the excess NH 2 groups through acetylation was essential to prevent such bis-coordination and improve product yields Surprisingly, FeTal x systems have proved better catalysts for such hydrocarbon oxidations with hydrogen peroxide than the homogeneous iron porphyrinread more
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Selective functionalisation of saturated C–H bonds with metalloporphyrin catalysts
TL;DR: This critical review focuses on metalloporphyrin-catalysed saturated C-H bond functionalisation reported since the year 2000, including C-O, C-N and C-C bond formation via hydroxylation, amination and carbenoid insertion, respectively, together with a brief description of previous achievements.
Journal ArticleDOI
Porphyrin based porous organic polymer as bi-functional catalyst for selective oxidation and Knoevenagel condensation reactions
TL;DR: In this article, a microporous organic polymer Fe-POP-1 has been synthesized through a facile solvothermal method involving extended aromatic substitution of pyrrole and terephthaldehyde in the presence of Fe(III).
Journal ArticleDOI
Functionalization of synthetic talc-like phyllosilicates by alkoxyorganosilane grafting
Karine Chabrol,Karine Chabrol,Marie Gressier,Nadine Pébère,Marie-Joëlle Menu,François Martin,Jean-Pierre Bonino,Claire Marichal,Jocelyne Brendle +8 more
TL;DR: In this article, a range of talc-like phyllosilicates were prepared via a hydrothermal synthesis performed at five different temperatures from 160 to 350 °C.
Journal ArticleDOI
Some features associated with organosilane groups grafted by the sol-gel process onto synthetic talc-like phyllosilicate
TL;DR: Two new lamellar inorganic-organic magnesium silicates have been successfully synthesized by using sol-gel based processes under mild temperature conditions, and the enhanced potential of the new compound PhMg-Tz as a multi property material was explored in adsorbing cations from aqueous solution.
Journal ArticleDOI
Metalloporphyrins Immobilized on Silica and Modified Silica as Catalysts in Heterogeneous Processes
TL;DR: In this paper, a review of metalloporphyrin (MP) catalysts and their properties is presented, including their selectivity and selectivity in solution (homogeneous catalysis).
References
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Book
Crystal Structures of Clay Minerals and their X-ray Identification
G. W. Brindley,G. Brown +1 more
TL;DR: In the years 1930-1950 clay mineral identification involved mainly a combination of X-ray powder diffraction and chemical analysis with some assistance from other techniques, notably differential thermal analysis.
Book
The porphyrin handbook
TL;DR: In this article, the Iron and Cobalt Pigments: Biosynthesis, Structure and Degradation Volume 11: Bioinorganic and Bioorganic Chemistry Volume 12: The iron and cobalt pigments and chlorophylls and Bilins: Bioinorganic, bioorganic, and bioorganic chemistry Volume 14: Medical Aspects of Porphyrins Volume 15: Phthalocyanines: Synthesis Volume 16: PHTHC: Spectroscopic and Electrochemical Characterization Volume 17: PhTHCINE Properties and Materials Volume 18: Multiporph
Book
Fundamentals of analytical chemistry
TL;DR: In this paper, the fundamental principles of analytical chemistry are discussed, together with a review of the applications of these concepts in analytical chemistry.http://www.documentaries.org.au.
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