Results 81 to 90 of about 138,420 (314)

Taint and odour phenomena in carton-board packaging systems [PDF]

, 1998
Unsaturated lipids exist in carton-board and can be the precursors of odorous compounds. Two unsaturated lipids that can be present are oleic acid (cis 9-octadecenoic acid) and linoleic acid (cis, cis 9,12-octadecadienoic acid).
Pugh, Simon
core  

Reductive amination with zinc powder in aqueous media

Beilstein Journal of Organic Chemistry, 2011
Zinc powder in aqueous alkaline media was employed to perform reductive amination of aldehydes with primary amines. The corresponding secondary amines were obtained in good yields along with minor amounts of hydrodimerization byproducts.
Giovanni B. Giovenzana, Daniela Imperio, Andrea Penoni, Giovanni Palmisano   +3 more
doaj   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

Advanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez, Melanie Guillén‐Soler, Carlos Herreros‐Lucas, Alejandro López‐Moreno, José Manuel Vila‐Fungueiriño, Antonio Luis Llamas‐Saiz, Karol Strutyński, Manuel Melle‐Franco, María del Carmen Giménez‐López   +8 more
wiley   +1 more source

Gold nanoparticles supported on Ce-Zr oxides for the oxidative esterification of aldehydes to esters [PDF]

, 2015
Au nanoparticles supported on Ce-Zr oxides were prepared and characterized in order to study the role of the support in the oxidative esterification of aldehydes in the presence of molecular oxygen. Ce-Zr solid solutions were synthesized by using (NH4)(
Yan, Ruiyi, Li, Yuchao, Wang, Lei, Zhang, Suojiang, Han, Junxing   +4 more
core   +1 more source

Redox-active tetrathiafulvalene and dithiolene compounds derived from allylic 1,4-diol rearrangement products of disubstituted 1,3-dithiole derivatives

Beilstein Journal of Organic Chemistry, 2010
We present a series of compounds by exploiting the unusual 1,4-aryl shift observed for electron-rich 1,3-dithiole-2-thione and tetrathiafulvalene (TTF) derivatives in the presence of perchloric acid.
Filipe Vilela, Peter J. Skabara, Christopher R. Mason, Thomas D. J. Westgate, Asun Luquin, Simon J. Coles, Michael B. Hursthouse   +6 more
doaj   +1 more source

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

Advanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas, Lucía Torrico‐García‐Viso, Jose Antonio Suárez del Pino, Nekane Aramburu‐Merino, Pilar Segovia, Enrique G. Michel, Josep Puigmartí‐Luis, Enrique Velasco, Pedro Tarazona, Daniel Maspoch, David Rodríguez‐San‐Miguel, Félix Zamora   +11 more
wiley   +1 more source

Environmental Aldehydes and Cardiovascular Disease [PDF]

, 2010
Aldehydes are ubiquitous carbonyl-containing compounds and toxic levels are reached in the environment as a primary result of anthropogenic input. Combustion of organic substrates generates high levels of a number of diverse aldehydes, in part, as a ...
D. J. Conklin, S. Srivastava, P. Haberzettl, J. Lee   +3 more
core   +1 more source

Eutectozymes as Soft Hybrid Materials for Advanced Biocatalysis

Advanced Materials, EarlyView.
Eutectozymes are sustainable hybrid materials that embed a GOx–HRP cascade within hydrophobic eutectogels featuring a dual supramolecular–covalent network. This architecture preserves native enzyme structure and stability, enables efficient heterogeneous biocatalysis in aqueous media, and positions eutectogels as robust platforms for next‐generation ...
Manuel Eduardo Martinez Cartagena, Lucia Suarez, Aitor Ontoria, Francisca J. Benitez, Elixabete Rezabal, María Soledad Orellano, Marcelo Calderón, Cristián Huck‐Iriart, Agustin S. Picco, Matias L. Picchio, Ana Beloqui   +10 more
wiley   +1 more source

High Enantioselective Organocatalytic Asymmetric Direct Aldol Reactions of Aldehydes with Long-Chain Aliphatic Ketones [PDF]

, 2009
Asymmetric organocatalysis have been developed explosively, since the pioneering work on proline-catalyzed asymmetric direct Aldol reaction reported by List, Barbas and coworkers[1].
高强, 李军, 李灿
core  

Stable Protein‐Based G‐Quadruplex‐Derived Supramolecular Bioinks as Tunable ECM‐Mimetic Constructs Assembled by Combining Non‐Covalent and Covalent Strategies

Advanced Materials, EarlyView.
Harnessing the synergistic interplay of supramolecular self‐assembly, under macromolecular crowding conditions, and enzymatic‐mediated covalent crosslinking toward a stable protein‐based G‐quadruplex‐derived supramolecular bioink. This bioinspired strategy enables the biofabrication of complex and tunable ECM‐mimetic constructs, providing a platform ...
Vera Sousa, Rita Sobreiro‐Almeida, Bart W. L. van den Bersselaar, E. W. Meijer, Ghislaine Vantomme, João Borges, João F. Mano   +6 more
wiley   +1 more source