Results 11 to 20 of about 442,606 (272)

Magnetic catalysis and inverse catalysis for heavy pions [PDF]

Journal of High Energy Physics, 2019
We investigate the QCD phase diagram for nonzero background magnetic fields using first-principles lattice simulations. At the physical point (in terms of quark masses), the thermodynamics of this system is controlled by two opposing effects: magnetic ...
G. Endrődi, M. Giordano, S. D. Katz, T. G. Kovács, F. Pittler   +4 more
doaj   +8 more sources

Enantioconvergent catalysis [PDF]

Beilstein Journal of Organic Chemistry, 2016
An enantioconvergent catalytic process has the potential to convert a racemic starting material to a single highly enantioenriched product with a maximum yield of 100%.
Justin T. Mohr, Jared T. Moore, Brian M. Stoltz   +2 more
doaj   +5 more sources

Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts

Nanomaterials, 2022
Two series of Ni/Ce(Ti/Nb)ZrO2 catalysts were prepared using citrate route and original solvothermal continuous flow synthesis in supercritical isopropanol and studied in dry reforming of methane (DRM). TEM, XPS and FTIRS of adsorbed CO confirm influence
Ekaterina Smal, Yulia Bespalko, Marina Arapova, Valeria Fedorova, Konstantin Valeev, Nikita Eremeev, Ekaterina Sadovskaya, Tamara Krieger, Tatiana Glazneva, Vladislav Sadykov, Mikhail Simonov   +10 more
doaj   +1 more source

Kinetic Regularities of Methane Dry Reforming Reaction on Nickel-Containing Modified Ceria–Zirconia

Energies, 2021
The Ni-containing catalysts based on ceria–zirconia doped with Ti and Ti+Nb were prepared by the solvothermal method in supercritical fluids. Ni deposition was carried out by incipient wetness impregnation and the one-pot technique.
Valeria Fedorova, Mikhail Simonov, Konstantin Valeev, Yuliya Bespalko, Ekaterina Smal, Nikita Eremeev, Ekaterina Sadovskaya, Tamara Krieger, Arcady Ishchenko, Vladislav Sadykov   +9 more
doaj   +1 more source

Modern Trends in Design of Catalysts for Transformation of Biofuels into Syngas and Hydrogen: From Fundamental Bases to Performance in Real Feeds

Energies, 2021
This review considers problems related to design of efficient structured catalysts for natural gas and biofuels transformation into syngas. Their active components are comprised of fluorite, perovskite and spinel oxides or their nanocomposites (both bulk
Vladislav Sadykov, Mikhail Simonov, Nikita Eremeev, Natalia Mezentseva   +3 more
doaj   +1 more source

Diastereodivergent Catalysis

JACS Au, 2023
Alongside enantioselective catalysis, synthetic chemists are often confronted by the challenge of achieving catalyst control over the relative configuration to stereodivergently access desired diastereomers. Typically, these approaches iteratively or simultaneously control multiple stereogenic units for which dual catalytic methods comprising ...
Moser, Daniel, Schmidt, Tanno A., Sparr, Christof   +2 more
openaire   +3 more sources

Testing conditions for CoMo HDS catalyst in the kinetic region: integrated approach using the math calculations and catalytic experiments

Chimica Techno Acta, 2023
The main idea of the investigation was to define testing parameters with the lowest influence of internal and external diffusion on catalytic activity in hydrodesulfurization of dibenzothiophene.
Polina P. Mukhacheva, Yuliya V. Vatutina, Ivan A. Mik, Ksenia A. Nadeina, Maxim O. Kazakov, Oleg P. Klenov, Oleg V. Klimov, Aleksandr S. Noskov   +7 more
doaj   +1 more source

Microheterogeneous Catalysis [PDF]

Molecules, 2010
The catalytic effect of micelles, polymers (such as DNA, polypeptides) and nanoparticles, saturable receptors (cyclodextrins and calixarenes) and more complex systems (mixing some of the above mentioned catalysts) have been reviewed. In these microheterogeneous systems the observed changes in the rate constants have been rationalized using the ...
Bernal Pérez, Eva, Marchena Barriento, María José, Sánchez Burgos, Francisco   +2 more
openaire   +4 more sources

IDPi Catalysis [PDF]

Angewandte Chemie International Edition, 2019
AbstractHigh acidity and structural confinement are pivotal elements in asymmetric acid catalysis. The recently introduced imidodiphosphorimidate (IDPi) Brønsted acids have met with remarkable success in combining those features, acting as powerful Brønsted acid catalysts and “silylium” Lewis acid precatalysts in numerous thus far inaccessible ...
Lucas Schreyer, Roberta Properzi, Benjamin List   +2 more
openaire   +3 more sources

Novel Ni/Ce(Ti)ZrO₂ Catalysts for Methane Dry Reforming Prepared in Supercritical Alcohol Media

Energies, 2020
To achieve a high activity and coking stability of nickel catalysts in dry reforming of methane, materials comprised of ceria–zirconia doped by Ti were investigated as supports.
Yuliya Bespalko, Ekaterina Smal, Mikhail Simonov, Konstantin Valeev, Valeria Fedorova, Tamara Krieger, Svetlana Cherepanova, Arcady Ishchenko, Vladimir Rogov, Vladislav Sadykov   +9 more
doaj   +1 more source