Journal ArticleDOI
Mesoporous (Cr)MCM-41: A Mild and Efficient Heterogeneous Catalyst for Selective Oxidation of Cyclohexane
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TLDR
In this article, a mesoporous MCM-41 molecular sieves with acetic acid as solvent, hydrogen peroxide as oxidant, and methyl ethyl ketone as initiator was used for liquid phase oxidation of cyclohexane.About:
This article is published in Journal of Catalysis.The article was published on 2002-10-01. It has received 146 citations till now. The article focuses on the topics: Cyclohexanone & Catalysis.read more
Citations
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Ordered mesoporous materials in catalysis
Akira Taguchi,Ferdi Schüth +1 more
TL;DR: In this paper, a review of the preparation of ordered mesoporous catalysts is presented, and the essential properties of the resulting materials are described in the first part of this review.
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Polymer-supported Schiff base complexes in oxidation reactions
TL;DR: In this paper, the catalytic activity of different types of Schiff base was analyzed and presented in a review, showing that polymer-supported Schiff base complexes of metal ions show high catalytic performance in comparison to their unsupported analogues.
Journal ArticleDOI
Behavior of active sites on Cr-MCM-41 catalysts during the dehydrogenation of propane with CO2
Katsuomi Takehira,Yoshihiko Ohishi,Tetsuya Shishido,Tomonori Kawabata,Ken Takaki,Qinghong Zhang,Ye Wang +6 more
TL;DR: In this paper, the mechanism of catalyst deactivation and regeneration was discussed based on the structure-catalytic property relationships. And the authors concluded that during the reaction propane is dehydrogenated to propene by Cr(IV)O4 tetrahedra, which is simultaneously reduced to Cr(III)O6 octahedra.
Journal ArticleDOI
Characterizations and catalytic properties of Cr-MCM-41 prepared by direct hydrothermal synthesis and template-ion exchange
Ye Wang,Yoshihiko Ohishi,Tetsuya Shishido,Qinghong Zhang,Wei Yang,Qian Guo,Huilin Wan,Katsuomi Takehira +7 more
TL;DR: In this article, it is suggested that monochromate species mainly exist on the Cr-MCM-41 by direct hydrothermal synthesis (DHT) and template-ion exchange (TIE) method.
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A highly active Au/Al2O3 catalyst for cyclohexane oxidation using molecular oxygen
TL;DR: In this paper, the selective oxidation of cyclohexane to cycloenanone and cycloenanol has been investigated over Au/Al2O3 catalysts using molecular oxygen in a solvent-free system.
References
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Journal ArticleDOI
A new family of mesoporous molecular sieves prepared with liquid crystal templates
Jeffrey S. Beck,James C. Vartuli,Wieslaw J. Roth,M. E. Leonowicz,Charles T. Kresge,Kirk D. Schmitt,Cynthia Ting-Wah Chu,David H. Olson,E. W. Sheppard,S. B. McCullen,J. B. Higgins,J.L. Schlenker +11 more
TL;DR: In this paper, the synthesis, characterization, and proposed mechanism of formation of a new family of silicatelaluminosilicate mesoporous molecular sieves designated as M41S is described.
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Heterogeneous Catalysts for Liquid-Phase Oxidations: Philosophers' Stones or Trojan Horses?
TL;DR: In this article, it was shown that the Ti(IV)/SiO2 catalysts are both a strong Lewis acid and a weak oxidant in their highest oxidation state, the latter criterion is necessary in order to minimize competing one-electron oxidation of the ROO ligand leading to homolytic decomposition of ROOH.
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Recent advances in processing and characterization of periodic mesoporous MCM-41 silicate molecular sieves
TL;DR: A critical review of the developments in these areas with particular emphasis on adsorption characteristics, progress in controlling the pore sizes, and a comparison of pore size distributions using traditional and newer models is provided in this article.
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Activities and stabilities of heterogeneous catalysts in selective liquid phase oxidations: recent developments
TL;DR: Different strategies for the heterogenization of redox-active elements in solid matrices are reviewed in this paper, including grafting or tethering to the inner walls of mesoporous molecular sieves, encapsulation by ship-in-a-bottle, and ion exchange in layered double hydroxides.
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Chromium-catalyzed oxidations in organic synthesis
TL;DR: A plethora of chromium reagents and procedures have been proposed and they have been extensively described in reviews and books as discussed by the authors, and these methods, in which the oxidative ability and selectivity have now been in part evaluated by computer assistance, imply either the w e of stoichiometric quantities or large excesses of poisonous reagents.