In the presence of 1,1,2-trichloroethane, a novel procedure for the Pd-C catalytic N-debenzylation of benzylamines was established. The method proceeded in a synergistic catalytic system and directly gave the products as crystal amine hydrochlorides in practically quantitative yields.
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http://dx.doi.org/10.1021/jo9007282 | DOI Listing |
Nanomaterials (Basel)
December 2024
Unidad Multidisciplinaria de Docencia e Investigación-Juriquilla, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Juriquilla, Querétaro 76230, Mexico.
This work investigates the relationship between the mean diameter of palladium (Pd) nanoparticles and their surface energy, specifically in the context of alkaline ethanol electro-oxidation for fuel cell applications. Employing a recent generalization of the classical Laviron equation, we derive crucial parameters such as surface energy (), adsorption-desorption equilibrium constant (), and electron transfer coefficient () from linear voltammograms obtained from Pd-based nanoparticles supported on Vulcan carbon. Synthesized using two distinct methods, these nanocatalysts exhibit mean diameters ranging from 10 to 41 nm.
View Article and Find Full Text PDFChemSusChem
December 2024
Department of Energy, Environmental, and Chemical Engineering, McKelvey School of Engineering, Washington University in St. Louis, St Louis, MO 63130, USA.
Chemical depolymerization of lignin is a non-selective process that often generates a wide distribution of product compounds, denoted herein as lignin breakdown products (LBPs). To address this limitation, we developed a hybrid lignin conversion process that employs a lignin-first catalytic approach on biomass and subsequent microbial upgrading. A Pd/C catalyst was used for reductive catalytic fractionation (RCF) of poplar biomass, and Rhodococcus opacus PD630 (R.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
hte GmbH, 69123 Heidelberg, Baden Wuerttemberg, Germany.
Adv Mater
November 2024
School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland, 4001, Australia.
Platinum group metals (PGM) have yet to be the most active catalysts in various sustainable energy reactions. Their high cost, however, has made maximizing the activity and minimizing the dosage become an urgent priority for the practical applications of emerging technologies. Herein, a novel 2D Pd nanomesh structure possessing hole inner reconstructed edges (HIER) with exposed high energy facets and overstretched lattice parameters is fabricated through a facile room-temperature reduction method at gram-scale yields.
View Article and Find Full Text PDFJ Am Chem Soc
November 2024
Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States.
Hydrogen isotopically labeled compounds have extensive utility across diverse domains, especially in drug discovery and development. However, synthesis of the labeled compounds with exclusive site selectivity and/or high isotope incorporation is challenging. One widely employed method is heterogeneous palladium(0)-catalyzed (such as Pd/C) dehalogenative deuteration and tritiation with D/T gas.
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