Graphite oxide activated zeolite NaY: applications in alcohol dehydration

Todd, Alexander D.; Bielawski, Christopher W.

doi:10.1039/c2cy20474f

Cited by 19 publications

(15 citation statements)

References 47 publications

(44 reference statements)

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“…Our GO and eGO samples present similar C/O ratios (nearly 1.7, according to elemental analysis) and largely different surface areas (according to Brunauer–Emmett–Teller (BET) measurements): 0.8 and 4.6 m 2 g −1 , respectively. These surface area values agree well with those reported in the literature for GO samples,32, 33 while they are definitely lower than the value of the graphite starting material (308 m 2 g −1 ).…”

Section: Methodssupporting

confidence: 91%

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a V^IV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)

Santos

Correia²,

Oliveira

et al. 2014

Eur J Inorg Chem

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The cover picture shows a representation of the HEWL–VIVO(pic)2 adduct (HEWL: hen egg white lysozyme). Our X‐ray crystallography results show that the VIVO(pic)2 complex covalently binds to the COO– group of the side‐chain Asp52 residue of HEWL. Although a relatively long VIV=O bond was obtained (ca. 1.82 Å), a combined approach using EPR and DFT techniques confirms that the carboxylate group of the Asp52 residue of HEWL binds to VIVO(pic)2 and, moreover, that the oxidation state of vanadium is VIV. We conclude that the long VIV=O bond obtained is the result of the exposure of the crystals to the very intense X‐ray beam, which induces a progressive reduction of VIV to VIII and the concomitant bond elongation. These results may be important for the development of vanadium complexes as therapeutic agents, namely as oral insulin substitutes for the treatment of diabetes. We would like to thank Rui Pedro Bordalo for designing the cover picture. Details are discussed in the Short Communication by J. C. Pessoa, T. Santos‐Silva et al. on . For more on the story behind the cover research, see the .

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Section: Methodssupporting

confidence: 91%

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a V^IV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)

Santos

Correia²,

Oliveira

et al. 2014

Eur J Inorg Chem

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“…These composite materials have been shown to be highly active in the dehydration of secondary and tertiary alcohols to their corresponding olefins. 101 Derivatives of GO functionalized with basic moieties have also been shown to exhibit bifunctional acid-base behavior, 102 and GO has even been used as a phase transfer catalyst to improve the organic solubility of inorganic salts such as KOH. 103 The utility of GO in oxidations is similarly broad and improvements continue to be made.…”

Section: Go's Intrinsic Reactivitymentioning

confidence: 99%

Harnessing the chemistry of graphene oxide

Dreyer¹,

2014

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Our understanding of the fundamental structure and bonding of graphene oxide (GO) as well as the scope of its utility have grown tremendously over the past decade. As a result, the pace of research efforts directed toward this carbon material continues to increase. Contemporary application now intersects a variety of disciplines and includes heterogeneous catalysis, flow reactor technologies, biomedicine and biotechnology, polymer composites, energy storage, and chemical sensors. Advances in these areas have been buoyed by improvements in the methods used to synthesize and characterize GO, as well as functionalized derivatives thereof. While the diverse uses of GO have been reviewed previously, herein we provide an overview of some of the most recent and significant developments in the field. A brief overview of GO's synthesis and characterization is also provided as well as several recently proposed structural models. The inherent reactivity of GO is described in the context of catalysis, and the utilization of GO's reactive oxygen groups and carbon framework to prepare functionalized derivatives is also discussed. Finally, we provide an outlook of potential areas where GO, its derivatives, and related materials may be expected to find utility or opportunity for further growth and study.

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“…The use of GO as carbocatalyst, pioneered by the Bielawski group, has been shown to facilitate a variety of reactions including oxidation, reduction, dehydration, and C–C bond formation [71–74]. GO was found to improve the yields of the α-cyanation reaction, and this was the first example of using GO to promote visible light-mediated reactions.…”

Section: Reviewmentioning

confidence: 99%

The chemistry of amine radical cations produced by visible light photoredox catalysis

Hu¹,

Wang²,

Nguyen³

et al. 2013

Beilstein J. Org. Chem.

396

228

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Amine radical cations are highly useful reactive intermediates in amine synthesis. They have displayed several modes of reactivity leading to some highly sought-after synthetic intermediates including iminium ions, α-amino radicals, and distonic ions. One appealing method to access amine radical cations is through one-electron oxidation of the corresponding amines under visible light photoredox conditions. This approach and subsequent chemistries are emerging as a powerful tool in amine synthesis. This article reviews synthetic applications of amine radical cations produced by visible light photocatalysis.1977

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Graphite oxide activated zeolite NaY: applications in alcohol dehydration

Cited by 19 publications

References 47 publications

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a V^IV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a V^IV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)

Harnessing the chemistry of graphene oxide

The chemistry of amine radical cations produced by visible light photoredox catalysis

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Graphite oxide activated zeolite NaY: applications in alcohol dehydration

Cited by 19 publications

References 47 publications

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a VIV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a VIV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)

Harnessing the chemistry of graphene oxide

The chemistry of amine radical cations produced by visible light photoredox catalysis

Contact Info

Product

Resources

About

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a V^IV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)

Vanadium Complexes as Prospective Therapeutics: Structural Characterization of a V^IV Lysozyme Adduct (Eur. J. Inorg. Chem. 21/2014)