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Catalysts, Volume 7, Issue 3

March 2017 - 24 articles

Cover Story: Density functional theory (DFT) calculations have been used to explore the catalytic potential in olefin metathesis of in silico Ru-based complexes holding a phosphine-phosphonium ylide ligand, the electron-donating properties of which overtake those of the conventional N-heterocyclic carbene (NHC) and Cl– ligands together. Reaction intermediates coming from either complex are found to exhibit similar thermodynamic stability. Both complexes are shown to be activated through a dissociative mechanism, with a more exothermic first dissociation of the common PPh3 ligand from the ylide complex. The cationic character of the latter opens prospects for a new generation of catalysts turning in aqueous media. View this paper
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Articles (24)

  • Article
  • Open Access
22 Citations
7,234 Views
16 Pages
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Graphene Oxide-Supported Oxime Palladacycles as Efficient Catalysts for the Suzuki–Miyaura Cross-Coupling Reaction of Aryl Bromides at Room Temperature under Aqueous Conditions

  • Melania Gómez-Martínez,
  • Alejandro Baeza and
  • Diego A. Alonso
Catalysts2017, 7(3), 94;https://doi.org/10.3390/catal7030094

22 March 2017

Palladacycles are highly efficient precatalysts in cross-coupling reactions whose immobilization on carbonaceous materials has been hardly studied. Herein, we report a detailed study on the synthesis and characterization of new oxime palladacycle-gra...

Full Article
  • Article
  • Open Access
14 Citations
5,624 Views
13 Pages
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Highly Selective Solid Acid Catalyst H1−xTi2(PO4)3−x(SO4)x for Non-Oxidative Dehydrogenation of Methanol and Ethanol

  • Gheorghiţa Mitran,
  • Daniel G. Mieritz and
  • Dong-Kyun Seo
Catalysts2017, 7(3), 95;https://doi.org/10.3390/catal7030095

22 March 2017

The conversion of alcohols towards aldehydes in the presence of catalysts by non-oxidative dehydrogenation requires special importance from the perspective of green chemistry. Sodium (Na) super ionic conductor (NASICON)-type hydrogen titanium phospha...

Full Article
  • Article
  • Open Access
11 Citations
6,867 Views
12 Pages
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Stabilization of a Lipolytic Enzyme for Commercial Application

  • Simone Antonio De Rose,
  • Halina Novak,
  • Andrew Dowd,
  • Sukriti Singh,
  • Dietmar Andreas Lang and
  • Jennifer Littlechild
Catalysts2017, 7(3), 91;https://doi.org/10.3390/catal7030091

21 March 2017

Thermomyces lanouginosa lipase has been used to develop improved methods for carrier-free immobilization, the Cross-Linked Enzyme Aggregates (CLEAs), for its application in detergent products. An activator step has been introduced to the CLEAs prepa...

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  • Article
  • Open Access
58 Citations
10,964 Views
8 Pages
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Catalytic Transfer Hydrogenation of Biobased HMF to 2,5-Bis-(Hydroxymethyl)Furan over Ru/Co3O4

  • Ting Wang,
  • Junhua Zhang,
  • Wenxing Xie,
  • Yanjun Tang,
  • Daliang Guo and
  • Yonghao Ni
Catalysts2017, 7(3), 92;https://doi.org/10.3390/catal7030092

21 March 2017

2,5-Bis-(hydroxymethyl)furan (BHMF) is an important biomass-based platform chemical that can be derived from the hydrogenation of biomass-based 5-hydroxymethylfurfural (HMF). In this paper, the formation of BHMF from HMF via the catalytic transfer hy...

Full Article
  • Review
  • Open Access
154 Citations
12,390 Views
14 Pages
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Photocatalytic Water Oxidation on ZnO: A Review

  • Sharifah Bee Abdul Hamid,
  • Swe Jyan Teh and
  • Chin Wei Lai
Catalysts2017, 7(3), 93;https://doi.org/10.3390/catal7030093

21 March 2017

The investigation of the water oxidation mechanism on photocatalytic semiconductor surfaces has gained much attention for its potential to unlock the technological limitations of producing H2 from carbon-free sources, i.e., H2O. This review seeks to...

Full Article
  • Article
  • Open Access
5 Citations
5,744 Views
11 Pages
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Organocatalytic Enantioselective Epoxidation of Some Aryl-Substituted Vinylidenebisphosphonate Esters: On the Way to Chiral Anti-Osteoporosis Drugs

  • Andrea Chiminazzo,
  • Laura Sperni,
  • Alessandro Scarso and
  • Giorgio Strukul
Catalysts2017, 7(3), 90;https://doi.org/10.3390/catal7030090

20 March 2017

The synthesis of a new class of epoxide derivatives from prochiral vinylidene bisphosphonate (VBP) precursors is reported using hydrogen peroxide as the terminal oxidant. The reaction is carried out using a series of possible organic activators havin...

Full Article
  • Review
  • Open Access
24 Citations
15,831 Views
27 Pages
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Pd/C Catalysis under Microwave Dielectric Heating

  • Elena Cini,
  • Elena Petricci and
  • Maurizio Taddei
Catalysts2017, 7(3), 89;https://doi.org/10.3390/catal7030089

20 March 2017

Microwave-assisted organic synthesis (MAOS) provides a novel and efficient means of achieving heat organic reactions. Nevertheless, the potential arcing phenomena via microwave (MW) interaction with solid metal catalysts has limited its use by organi...

Full Article
  • Article
  • Open Access
91 Citations
12,751 Views
13 Pages
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The Role of Ruthenium in CO2 Capture and Catalytic Conversion to Fuel by Dual Function Materials (DFM)

  • Shuoxun Wang,
  • Erik T. Schrunk,
  • Harshit Mahajan and
  • And Robert J. Farrauto
Catalysts2017, 7(3), 88;https://doi.org/10.3390/catal7030088

17 March 2017

Development of sustainable energy technologies and reduction of carbon dioxide in the atmosphere are the two effective strategies in dealing with current environmental issues. Herein we report a Dual Function Material (DFM) consisting of supported so...

Full Article
  • Letter
  • Open Access
6 Citations
6,469 Views
12 Pages
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Olefin Metathesis with Ru-Based Catalysts Exchanging the Typical N-Heterocyclic Carbenes by a Phosphine–Phosphonium Ylide

  • Laia Arnedo,
  • Remi Chauvin and
  • Albert Poater
Catalysts2017, 7(3), 85;https://doi.org/10.3390/catal7030085

14 March 2017

Density functional theory (DFT) calculations have been used to describe the first turnover of an olefin metathesis reaction calling for a new in silico family of homogenous Ru-based catalysts bearing a phosphine–phosphonium ylide ligand, with ethylen...

Full Article
  • Article
  • Open Access
32 Citations
8,159 Views
26 Pages
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Dendrimer-Stabilized Ru Nanoparticles Immobilized in Organo-Silica Materials for Hydrogenation of Phenols

  • Eduard Karakhanov,
  • Anton Maximov,
  • Anna Zolotukhina,
  • Adila Mamadli,
  • Anna Vutolkina and
  • Andrey Ivanov
Catalysts2017, 7(3), 86;https://doi.org/10.3390/catal7030086

14 March 2017

New hybrid catalysts based on Ru nanoparticles, encapsulated into poly(propylene imine dendrimers), immobilized into silica pores, were synthesized and examined for the hydrogenation of alkyl-substituted phenols. The corresponding alkyl-substituted c...

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