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Coutard N, Goldberg JM, Valle HU, Cao Y, Jia X, Jeffrey PD, Gunnoe TB, Groves JT. Aerobic Partial Oxidation of Alkanes Using Photodriven Iron Catalysis. Inorg Chem 2021; 61:759-766. [PMID: 34962799 DOI: 10.1021/acs.inorgchem.1c03086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photodriven oxidations of alkanes in trifluoroacetic acid using commercial and synthesized Fe(III) sources as catalyst precursors and dioxygen (O2) as the terminal oxidant are reported. The reactions produce alkyl esters and occur at ambient temperature in the presence of air, and catalytic turnover is observed for the oxidation of methane in a pure O2 atmosphere. Under optimized conditions, approximately 17% conversion of methane to methyl trifluoroacetate at more than 50% selectivity is observed. It is demonstrated that methyl trifluoroacetate is stable under catalytic conditions, and thus overoxidized products are not formed through secondary oxidation of methyl trifluoroacetate.
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Affiliation(s)
- Nathan Coutard
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Jonathan M Goldberg
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Henry U Valle
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Yuan Cao
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Xiaofan Jia
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Philip D Jeffrey
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, United States
| | - T Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - John T Groves
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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Mignon P, Pera-Titus M, Chermette H. Oxo iron(iv) as an oxidative active intermediate of p-chlorophenol in the Fenton reaction: a DFT study. Phys Chem Chem Phys 2012; 14:3766-74. [DOI: 10.1039/c2cp23231f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Singh A, Gandra RT, Schneider EW, Biswas SK. Lubricant degradation and related wear of a steel pin in lubricated sliding against a steel disc. ACS APPLIED MATERIALS & INTERFACES 2011; 3:2512-2521. [PMID: 21682303 DOI: 10.1021/am200375a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In lubricated sliding contacts, components wear out and the lubricating oil ages with time. The present work explores the interactive influence between lubricant aging and component wear. The flat face of a steel pin is slid against a rotating steel disk under near isothermal conditions while the contact is immersed in a reservoir of lubricant (hexadecane). The chemical changes in the oil with time are measured by vibrational spectroscopy and gas chromatography. The corresponding chemistry of the pin surface is recorded using X-ray photoelectron spectroscopy while the morphology of the worn pins; surface and subsurface, are observed using a combination of focused ion beam milling and scanning electron microscopy. When compared to thermal auto-oxidation of the lubricant alone, steel on steel friction and wear are found to accentuate the decomposition of oil and to reduce the beneficial impact of antioxidants. The catalytic action of nascent iron, an outcome of pin wear and disk wear, is shown to contribute to this detrimental effect. Over long periods of sliding, the decomposition products of lubricant aging on their own, as well as in conjunction with their products of reaction with iron, generate a thick tribofilm that is highly protective in terms of friction and wear.
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Affiliation(s)
- Archana Singh
- Nanotribology Lab, Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560 012, India
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Hermanek M, Hermankova P, Pechousek J. Quasi-isothermal decomposition: a way to nanocrystalline mesoporous-like Fe2O3 catalyst for rapid heterogeneous decomposition of hydrogen peroxide. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c000632g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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5
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Karasevich EI, Kulikova VS, Shilov AE, Shteinman AA. Biomimetic alkane oxidation involving metal complexes. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1998v067n04abeh000315] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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García-Río L, Mejuto JC, Pérez-Lorenzo M. Simultaneous effect of microemulsions and phase-transfer agents on aminolysis reactions. J Phys Chem B 2007; 111:11149-56. [PMID: 17760440 DOI: 10.1021/jp0743323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The catalytic effect of triethylene glycol dimethyl ether (glyme) on the butylaminolysis of 4-nitrophenylcaprate (NPC) in water/AOT/chlorobenzene microemulsions has been studied. Experimental results show the existence of four simultaneous reaction pathways. One of them takes place at the microemulsion interphase where the rate-determining step of butylaminolysis is the formation of the addition intermediate, T+/-. The locus of the other three pathways is the continuous medium of the microemulsion. These three pathways consist of the decomposition of the addition intermediate catalyzed by butylamine, by glyme, and by both of them. The kinetic model allows us to obtain the value of every rate and distribution constant involved in the overall reaction mechanism. We must emphasize that the reactions located in the continuous medium exhibit a kinetic behavior similar to the corresponding one found in pure chlorobenzene. On the basis of the pseudophase model, the percentage of reaction in each of the microdomains of the microemulsion has been calculated. Likewise, changes in the loci of reaction from the interphase to the continuous medium as a function of catalyst concentration have been proved.
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Affiliation(s)
- L García-Río
- Departamento de Química Física, Facultade de Química, Universidade de Santiago, 15782 Santiago, Spain.
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Hermanek M, Zboril R, Medrik I, Pechousek J, Gregor C. Catalytic Efficiency of Iron(III) Oxides in Decomposition of Hydrogen Peroxide: Competition between the Surface Area and Crystallinity of Nanoparticles. J Am Chem Soc 2007; 129:10929-36. [PMID: 17691785 DOI: 10.1021/ja072918x] [Citation(s) in RCA: 271] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various iron(III) oxide catalysts were prepared by controlled decomposition of a narrow layer (ca. 1 mm) of iron(II) oxalate dihydrate, FeC(2)O(4).2H(2)O, in air at the minimum conversion temperature of 175 degrees C. This thermally induced solid-state process allows for simple synthesis of amorphous Fe(2)O(3) nanoparticles and their controlled one-step crystallization to hematite (alpha-Fe(2)O(3)). Thus, nanopowders differing in surface area and particle crystallinity can be produced depending on the reaction time. The phase composition of iron(III) oxides was monitored by XRD and (57)Fe Mössbauer spectroscopy including in-field measurements, providing information on the relative contents of amorphous and crystalline phases. The gradual changes in particle size and surface area accompanying crystallization were evaluated by HRTEM and BET analysis, respectively. The catalytic efficiency of the synthesized nanoparticles was tested by tracking the decomposition of hydrogen peroxide. The obtained kinetic data gave an unconventional nonmonotone dependence of the rate constant on the surface area of the samples. The amorphous nanopowder with the largest surface area of 401 m(2) g(-1) revealed the lowest catalytic efficiency, while the highest efficiency was achieved with the sample having a significantly lower surface area, 337 m(2) g(-1), exhibiting a prevailing content of crystalline alpha-Fe(2)O(3) phase. The obtained rate constant, 26.4 x 10(-3) min(-1) (g/L)(-1), is currently the highest value published. The observed rare catalytic phenomenon, where the particle crystallinity prevails over the surface area effects, is discussed with respect to other processes of heterogeneous catalysis.
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Affiliation(s)
- Martin Hermanek
- Centre for Nanomaterial Research, Palacky University, Slechtitelu 11, 783 71 Olomouc, Czech Republic
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Lee BK, Hong DP, Lee SS, Kuboi R. Evaluation of carboxylic acid-induced formation of reverse micelle clusters: comparison of the effects of alcohols on reverse micelles. Biochem Eng J 2004. [DOI: 10.1016/j.bej.2004.04.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kopylovich M, Kirillov A, Baev A, Pombeiro A. Heteronuclear iron(III)–chromium(III) hydroxo complexes and hydroxides, and their catalytic activity towards peroxidative oxidation of alkanes. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1381-1169(03)00420-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chauhan SM, Sahoo BB. Biomimetic oxidation of ibuprofen with hydrogen peroxide catalysed by horseradish peroxidase (HRP) and 5,10,15,20-tetrakis-(2',6'-dichloro-3'-sulphonatophenyl)porphyrinatoiro n(III) and manganese(III) hydrates in AOT reverse micelles. Bioorg Med Chem 1999; 7:2629-34. [PMID: 10632074 DOI: 10.1016/s0968-0896(99)00202-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The oxidation of ibuprofen with H2O2 catalysed by Horseradish peroxidase (HRP), Cl8TPPS4Fe(III)(OH2)2 and Cl8TPPS4Mn(III)(OH2)2 in AOT reverse micelles gives 2-(4'-isobutyl-phenyl)ethanol (5) and p-isobutyl acetophenone (6) in moderate yields. The reaction of ibuprofen (2) with H2O2 catalysed by HRP form carbon radicals by the oxidative decarboxylation, which on reaction with molecular oxygen to form hydroperoxy intermediate, responsible for the formation of the products 5 and 6. The yields of different oxidation products depend on the pH, the water to surfactant ratio (Wo), concentration of Cl8TPPS4Fe(III)(OH2)2 and Cl8TPPS4Mn(III)(OH2)2 and amount of molecular oxygen present in AOT reverse micelles. The formation of 2-(4'-isobutyl phenyl)ethanol (5) may be explained by the hydrogen abstraction from ibuprofen by high valent oxo-manganese(IV) radical cation, followed by decarboxylation and subsequent recombination of either free hydroxy radical or hydroxy iron(III)/manganese(III) porphyrins. The over-oxidation of 5 with high valent oxo-manganese, Mn(IV)radical cation intermediate form 6 in AOT reverse micelles by abstraction and recombination mechanism.
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Affiliation(s)
- S M Chauhan
- Department of Chemistry, University of Delhi, India.
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Hong DP, Kuboi R. Evaluation of the alcohol-mediated interaction between micelles using percolation processes of reverse micellar systems. Biochem Eng J 1999. [DOI: 10.1016/s1369-703x(99)00027-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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12
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Ruthenium colloids: A new catalyst for alkane oxidation by tBHP in a biphasic water-organic phase system. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(97)10834-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Aubry JM, Bouttemy S. Preparative Oxidation of Organic Compounds in Microemulsions with Singlet Oxygen Generated Chemically by the Sodium Molybdate/Hydrogen Peroxide System1. J Am Chem Soc 1997. [DOI: 10.1021/ja9644079] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jean-Marie Aubry
- Contribution from the “Equipe de Recherches sur les Radicaux Libres et l'Oxygène Singulet”, CNRS URA 351, Faculté de Pharmacie de Lille, B.P. 83,F-59006 Lille Cedex, France
| | - Sabine Bouttemy
- Contribution from the “Equipe de Recherches sur les Radicaux Libres et l'Oxygène Singulet”, CNRS URA 351, Faculté de Pharmacie de Lille, B.P. 83,F-59006 Lille Cedex, France
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Shiojiri S, Hirai T, Komasawa I. Preparation and Photocatalytic Reactions of Titanium Dioxide Ultrafine Particles in Reverse Micellar Systems. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1997. [DOI: 10.1252/jcej.30.137] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Isao Komasawa
- Department of Chemical Engineering, Osaka University
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Chauhan S, Mohapatra P, Kalra B, Kohli T, Satapathy S. Biomimetic oxidation of indole-3-acetic acid and related substrates with hydrogen peroxide catalysed by 5,10,15,20-tetrakis 2′,6′-dichloro-3′-sulfonatophenyl)porphyrinatoiron(III) hydrate in aqueous solution and AOT reverse micelles. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/s1381-1169(96)00058-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Buriak JM, Osborn JA. Studies on Catalytic Asymmetric Imine Hydrogenation in the Presence of Reverse Micelles: Enhanced Enantioselectivity due to Surfactant Head Group Coordination. Organometallics 1996. [DOI: 10.1021/om960082t] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jillian M. Buriak
- Laboratoire de Chimie des Métaux de Transition et Catalyse, Institut le Bel, Université Louis Pasteur, Strasbourg 67000, France
| | - John A. Osborn
- Laboratoire de Chimie des Métaux de Transition et Catalyse, Institut le Bel, Université Louis Pasteur, Strasbourg 67000, France
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Cheprakov AV, Ponomareva NV, Beletskaya IP. Palladium catalyzed carbonylation of iodoarenes in aqueous solubilized systems. J Organomet Chem 1995. [DOI: 10.1016/0022-328x(94)05102-h] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Ungváry F. Transition metals in organic synthesis: Hydroformylation, reduction, and oxidation. Annual survey covering the year 1992. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)88095-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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