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Magnetically Recoverable Magnetite/Gold Catalyst Stabilized by Poly(N-vinyl-2-pyrrolidone) for Aerobic Oxidation of Alcohols  [PDF]
Hsiao Wei Chen,Arumugam Murugadoss,T. S. Andy Hor,Hidehiro Sakurai
Molecules , 2011, DOI: 10.3390/molecules16010149
Abstract: Fe3O4:PVP/Au nanocomposite synthesized via a two-step procedure was tested as a quasi-homogenous alcohol oxidation catalyst. It was found that the nanocomposite was able to carry out aerobic oxidation of alcohols in water at room temperature. Studies show rapid magnetic recoverability and reusability characteristics.
Aerobic, catalytic oxidation of alcohols in ionic liquids
Souza, Roberto F. de;Dupont, Jairton;Dullius, Jeane E. de L.;
Journal of the Brazilian Chemical Society , 2006, DOI: 10.1590/S0103-50532006000100007
Abstract: an efficient and simple catalytic system based on rucl3 dissolved in ionic liquids has been developed for the oxidation of alcohols into aldehydes and ketones under mild conditions. a new fluorinated ionic liquid, 1-n-butyl-3-methylimidazolium pentadecafluorooctanoate, was synthesized and demonstrated better performance that the other ionic liquids employed. moreover this catalytic system utilizes molecular oxygen as an oxidizing agent, producing water as the only by-product.
Aerobic, catalytic oxidation of alcohols in ionic liquids  [cached]
Souza Roberto F. de,Dupont Jairton,Dullius Jeane E. de L.
Journal of the Brazilian Chemical Society , 2006,
Abstract: An efficient and simple catalytic system based on RuCl3 dissolved in ionic liquids has been developed for the oxidation of alcohols into aldehydes and ketones under mild conditions. A new fluorinated ionic liquid, 1-n-butyl-3-methylimidazolium pentadecafluorooctanoate, was synthesized and demonstrated better performance that the other ionic liquids employed. Moreover this catalytic system utilizes molecular oxygen as an oxidizing agent, producing water as the only by-product.
Simple and Practical Aerobic Oxidation of Alcohols Catalyzed by a (μ-Oxo)tetraruthenium Cluster  [PDF]
Teruyuki Kondo, Yu Kimura, Takashi Kanda, Daisuke Takagi, Kenji Wada, Akio Toshimitsu
Green and Sustainable Chemistry (GSC) , 2011, DOI: 10.4236/gsc.2011.14023
Abstract: A (μ-oxo)tetraruthenium cluster showed high catalytic activity for a simple and practical aerobic oxidation of alcohols to aldehydes and ketones under 1 atm of O2 or air. After the reaction, this cluster catalyst was re- covered from the reaction mixture, and we believe that this (μ-oxo)tetraruthenium cluster acts as an active catalytic species throughout the reaction.
Synthetic Applications of Chiral Unsaturated Epoxy Alcohols Prepared by Sharpless Asymmetric Epoxidation  [PDF]
Antoni Riera,María Moreno
Molecules , 2010, DOI: 10.3390/molecules15021041
Abstract: An overview of the synthesis and applications of chiral 2,3-epoxy alcohols containing unsaturated chains is presented. One of the fundamental synthetic routes to these compounds is Sharpless asymmetric epoxidation, which is reliable, highly chemoselective and enables easy prediction of the product enantioselectivity. Thus, unsaturated epoxy alcohols are readily obtained by selective oxidation of the allylic double bond in the presence of other carbon-carbon double or triple bonds. The wide availability of epoxy alcohols with unsaturated chains, the versatility of the epoxy alcohol functionality (e.g. regio- and stereo-selective ring opening; oxidation; and reduction), and the arsenal of established alkene chemistries, make unsaturated epoxy alcohols powerful starting materials for the synthesis of complex targets such as biologically active molecules. The popularization of ring-closing metathesis has further increased their value, making them excellent precursors to cyclic compounds.
An Efficient and Selective Solvent-free Oxidation of Alcohols by Shaking with Chromium Trioxide Supported on Aluminium Silicate  [PDF]
L. Huang,J. Lou,L. Zhu,L. Ping,Y. Fu
Molecules , 2005, DOI: 10.3390/10070794
Abstract: A selective oxidation of primary alcohols to the corresponding aldehydes by shaking with chromium trioxide supported on aluminium silicate at room temperature under solvent free conditions is reported. This new procedure can also oxidise secondary alcohols.
Efficient Copper-bisisoquinoline-based Catalysts for Selective Aerobic Oxidation of Alcohols to Aldehydes and Ketones  [PDF]
Hao-Yu Shen,Li-Yan Ying,Hai-Liang Jiang,Zaher M. A. Judeh
International Journal of Molecular Sciences , 2007, DOI: 10.3390/i8060505
Abstract: The selective oxidation of alcohols with molecular oxygen was efficientlycompleted in high conversion and selectivity using copper-bisisoquinoline-based catalystsunder mild reaction condition. The effects of various parameters such as reactiontemperature, reaction time, oxidant, ligands, etc, were studied. Solvent effect has been aswell studied in ionic liquids [bmim]PF6, [omim]BF4 and [hmim]BF4, comparing totraditional volatile organic solvent. The use of ionic liquids was found to enhance thecatalytic properties of the catalysts used.
An Efficient Activated Carbon for the Wastewater Treatment, Prepared from Peanut Shell  [PDF]
Mohammad Sadiq, Sajid Hussian
Modern Research in Catalysis (MRC) , 2013, DOI: 10.4236/mrc.2013.24020
Abstract: My group is actively involved in the research “Preparation of activated carbon from peanut shell, characterization and its use as adsorbent and as a support for catalyst. The paper published in the MRC entitle “An Efficient Activated Carbon for the Wastewater Treatment, Prepared from Peanut Shell” Modern Research in Catalysis, 2013, 2, 148-156, was submitted in the earlier stage of research, at present stage I am fully convinced that the kinetic section of the paper is totally incorrect. Therefore I appeal that remove the paper from the Journal site to avoid the citation of incorrect literature.
The activation of supported Au catalysts prepared by impregnation
Hsin-Yen Tsai,Yan-De Lin,Wan-Ting Fu,Shawn D Lin
Gold Bulletin , 2007, DOI: 10.1007/BF03215579
Abstract: In this study, Au/TiO2, Au/γ-Al2O3, and Au/C catalysts were prepared by an incipient-wetness impregnation method. The CO oxidation activity after different pretreatment was analyzed. Two pretreatments are found possible to activate these catalysts for CO oxidation: (i) high-temperature hydrogen reduction and (ii) aqueous base treatment using NH3(aq). The high-temperature hydrogen reduction is effective for Au/TiO2 and Au/C, but not Au/Al2O3. The base treatment is effective for Au/Al2O3 and Au/TiO2, but not Au/C. Small Au particles of ca. 2 nm size were observed in activated Au catalysts from both pretreatments; however, the high-temperature H2 reduction procedure also resulted in large Au particles of ca. 25 nm size which makes it a less efficient pretreatment than the base treatment. The activated Au/TiO2 catalysts show comparable turnover frequency as the Au/TiO2 catalyst prepared by a deposition precipitation method. The effective pretreatments were found to be accompanied by a reduced acidity, which is measured by the pH of aqueous catalyst suspension. Reasons for such activation are discussed.
Novel Ni-Co-Mo-K Catalysts Supported on Multiwalled Carbon Nanotubes for Higher Alcohols Synthesis  [PDF]
Venkateswara Rao Surisetty,Janusz Kozinski,Ajay Kumar Dalai
Journal of Catalysts , 2013, DOI: 10.1155/2013/942145
Abstract: Alkali-promoted Ni-Co-Mo catalysts supported on multiwalled carbon nanotubes (MWCNTs) were prepared using 9?wt% K, 4.5?wt% Co, and 15?wt% Mo, whereas Ni content was varied from 0 to 6?wt%. The catalysts were extensively characterized and studied for higher alcohols synthesis from synthesis gas. Alkali-promoted trimetallic catalyst with 3?wt% Ni showed the highest total alcohols yield of 0.284?gm/(gm of cat./h), ethanol selectivity of 20%, and higher alcohols selectivity of 32% at 330°C and 9.0?MPa using gas hourly space velocity (GHSV) of 3.8?m3 (STP)/kg of catalyst/h and H2 to CO molar ratio of 1.25. 1. Introduction Ethanol has been used as an additive for reformulated gasoline as unleaded gasoline has become the standard, and short ether compounds (MTBE, ETBE, etc.) have been banned as gasoline octane continues to improve in North America [1]. The catalytic conversion of syngas to ethanol, and other higher alcohols, is generally recognized as an interesting route for the production of clean fuels and petrochemical feedstocks from coal, natural gas, and hydrocarbon wastes via gasification [2]. The catalysts for higher alcohol synthesis (HAS) are divided into two main groups based on the product distribution [3]. Alkali-doped high-temperature ZnCrO-based and low-temperature Cu-based catalysts produce mainly methanol and higher branched alcohols [4, 5]. Methanol synthesis catalysts modified with Fischer-Tropsch (FT) elements and modified Mo-catalysts are the second group of HAS catalysts. These catalysts yield a series of linear primary alcohols and gaseous hydrocarbons both with Anderson-Schulz-Flory (ASF) carbon number distribution [6, 7]. Comparatively, molybdenum-sulfide-based catalysts showed a high proportion of higher alcohols at lower pressure and high temperature. MoS2-based catalysts can tolerate sulfur and coke-buildup as a result of higher alcohols synthesis. When MoS2 is promoted with K2CO3, the same performance of the catalysts is achieved at a significantly lower temperature [8]. The alkali-promoted MoS2 catalysts promoted with Co showed high activity to alcohols and can also produce alcohols with a variable ratio of methanol to higher alcohols by changing the operating conditions [9, 10]. The CO hydrogenation was studied over K/Co/Mo/A12O3 and K/Co/Mo/SiO2 catalysts and found that all three elements are necessary for higher activity. Hydrocarbons and alcohols were produced in approximately equal amounts over both the catalysts [11]. Copromotion on alkali-modified MoS2 catalysts leads to the shrinking of MoS2 species, while Co exists
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