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Selective Etching of Hydrogenated Amorphous Silicon by Hydrogen Plasma
Japanese Journal of Applied Physics, 1994The selective etching of hydrogenated amorphous silicon (a-Si:H) with respect to crystalline Si (c-Si) by hydrogen plasma is investigated. We have revealed that a-Si:H is etched ten times faster than c-Si. With lower etching temperature, etching selectivity and etching rate of a-Si:H and c-Si increase.
Masanori Otobe, Masao Kimura, Shunri Oda
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Influence of hydrogen pressure on selectivity in consecutive hydrogenation reactions
Industrial & Engineering Chemistry Research, 1987Etude par simulation mathematique, en vue de demontrer comment la vitesse d'adsorption influence l'ordre apparent d'une reaction et l'influence de l'hydrogene sur la selectivite de reactions d'hydrogenation ...
Claes Niklasson +2 more
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Selectivity in Proton Transfer, Hydrogen Bonding, and Solvation
Accounts of Chemical Research, 2000The site of protonation (or deprotonation) of polyfunctional bases and acids can be determined through the comparison of experimental NMR properties (chemical shift and relaxation rates) with the corresponding data calculated by quantum chemical methods.
BAGNO, ALESSANDRO, SCORRANO, GIANFRANCO
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A Selective Iron(I) Hydrogenation Catalyst
Journal of the American Chemical SocietyIron is the most abundant transition metal of the Earth's crust, and the understanding of its function in key technologies, such as catalysis, is highly important. We report here on an iron(I) hydrogenation catalyst. Our catalyst activates hydrogen via heterolytic bond cleavage, forms a monohydride, and hydrogenates polar double bonds via a bimetallic ...
Niko Sila +5 more
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Selective hydrogenation with the use of nanocatalysts
Russian Journal of Applied Chemistry, 2009Process of single-stage hydrogenation of phenol to cyclohexanone with industrial (domestic and imported) palladium catalysts, and also with nanocatalysts synthesized in laboratory, was studied. The activation energies and rate constants were determined for various nanocatalyst samples.
S. V. Levanova +6 more
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Catalyst-Controlled Site-Selective and Epimer-Selective Hydrogenations of Thiostrepton
Journal of the American Chemical SocietyThe hydrogenation of the antibiotic thiostrepton with control over the site- and stereoselectivity of reduction is reported. Studies on model substrates designed to mimic aspects of the consecutive dimeric dehydroalanine (Dha) tail of thiostrepton first culminate in the development of an asymmetric hydrogenation method for a diverse set of bis(Dha ...
Paul O. Peterson +2 more
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Selective Hydrogenation of Aldehydes and Ketones
2020The selective hydrogenation of α,β-unsaturated aldehydes and ketones catalyzed by metal nanoparticles is reviewed with an emphasis on the recent advances in this area. Key issue is the selectivity for allyl alcohol formation. General trends in the use of conditions, ligands and co-catalysts were observed.
Israel Cano, Piet W. N. M. van Leeuwen
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SELECTIVE HYDROGENATION OF A LYSINE INTERMEDIATE
Annals of the New York Academy of Sciences, 1973R, Fuhrmann, J, Pisanchyn, F, Koff
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Fullerene Catalysis in Selective Hydrogenation
ECS Meeting AbstractsFullerene catalysis has significant potential to offer more efficient, selective, and sustainable approaches for a broad variety of catalytic challenges, ranging from environmental remediation to advanced energy technologies. It has been discovered that when fullerene combines with copper nanoparticles to create a fullerene-copper interface, it ...
Jianwei Zheng, Su-Yuan Xie
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