Results 121 to 130 of about 6,959 (207)

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa, Jildimara de Jesus Santana, Viviane de Oliveira Campos, Felipe Fernandes Barbosa, Gregory S. Patience   +4 more
wiley   +1 more source

Crystal Structure Investigations of LaNi₂H_<i>x</i> (<i>x</i> = 0 and 3.08 with Metal Atoms in AlB₂ Units) and LaNiH_1.01. [PDF]

Inorg Chem
Sato T, Utsumi R, Nakahira Y, Saitoh H, Honda T, Orimo SI.   +5 more
europepmc   +1 more source

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source

Search for thermodynamically stable ambient-pressure superconducting hydrides in the GNoME database. [PDF]

Commun Phys
Sanna A, Cerqueira TFT, Cubuk ED, Errea I, Fang YW.   +4 more
europepmc   +1 more source

Chemoselectivity and Enantioselectivity in the Conjugate Reduction of Cinnamate Esters and a Tandem Conjugate Reduction‐Ester Hydrogenation Using Manganese Catalysts

European Journal of Organic Chemistry, EarlyView.
An improved synthesis of a manganese catalyst used for hydrogenation of ketones, esters and imines is reported. The catalyst has now been found to effect tandem conjugate reduction‐ester hydrogenations with very low amounts of allylic alcohol by‐products.
José A. Fuentes, Matthew L. Clarke
wiley   +1 more source

Identification of Au-hydrides as key intermediates in the reduction of Au(iii) prodrugs to active Au(i) species under protic conditions. [PDF]

Chem Sci
Ochs J, Metzler-Nolte N.
europepmc   +1 more source

Additives Promote Divergent Reactivity in Photolytic Deoxygenation and Lactonization Reactions of Cobalt Alkoxycarbonyls

European Journal of Organic Chemistry, EarlyView.
We report a carbonylation‐homolysis process to access acyl radicals that can undergo decarboxylation or cyclization onto tethered alkenes. In both cases, ligands and additives are shown to influence the outcome to give saturated or unsaturated products, in some cases with isomerization of the initial products.
Jacob N. Hackbarth, Dana R. Chambers, Cory T. Ludwig, Tyler K. Brown, David B. C. Martin   +4 more
wiley   +1 more source

Cu₁₄H₁₂(P<i>^t</i>Bu₃)₆Cl₂-The Expanse of Stryker's Reagent. [PDF]

Molecules
Strienz M, Kimmich R, Conzelmann A, Schnepf A.   +3 more
europepmc   +1 more source

Total Synthesis of rac‐Keramamine C Enabled by Intrinsic H‐Bond‐Induced Conformational Fixation of Amides

European Journal of Organic Chemistry, EarlyView.
The total synthesis of the manzamine alkaloid keramamine C (2) in its racemic form was achieved in 5 steps, with ring‐closing metathesis as the key step. The metathesis is strongly improved by an intramolecular H‐bond‐induced conformational fixation of the amide bond, inducing close proximity of the terminal double bonds in the precursor molecule.
Jana Ganzmann, Ryan Thurston, Pascal Riester, Nina Hegmann, Markus R. Heinrich   +4 more
wiley   +1 more source

Structural and reactivity investigations using organo-copper(i) and zinc(ii) complexes with hydrogen and carbon dioxide. [PDF]

Chem Sci
Cowie BE, Phanopoulos A, Shaffer MSP, Williams CK.   +3 more
europepmc   +1 more source