Results 101 to 110 of about 20,135 (183)

Investigation of the composition of the Luna 16 lunar sample [PDF]

The concentrations of aluminum, manganese, sodium, chromium, iron, cobalt, and 12 rare earth elements were determined by neutron activation analysis using slow neutrons. Oxygen and silicon were determined using a fast neutron generator.
Bakos, L., Chayka, M., Cheke, A., Cher, L., Dogadkin, N. N., Elek, A., Kulchar, K., Nagy, A., Nagy, D. L., Szabo, E.   +9 more
core   +1 more source

Metal‐Catalyzed C(sp2)–H Bond Functionalization of Indolinone‐ and Indanone‐Type Chemical Platforms En Route Toward Late‐Stage Functionalization

Advanced Synthesis &Catalysis, Volume 368, Issue 8, 15 April 2026.
An in‐depth survey dealing with the aromatic C—H bond functionalization of biologically‐relevant scaffolds featuring the indolinone and indanone core is discussed as they are unique aromatic scaffolds that are 1,2‐doubly fused with small five‐membered rings.
Vanessa Delahaye, Sylvie Dérien, Mathieu Achard, Rafael Gramage‐Doria   +3 more
wiley   +1 more source

Catalytic Autoxidation for Depolymerization of Multilayer Plastic Films

ChemSusChem, Volume 19, Issue 7, 14 April 2026.
Catalytic autoxidation using a Co/Mn/Br catalyst system depolymerizes diverse polymers in multilayer plastic films, generating oxygenated small molecules such as dicarboxylic acids. The method tolerates additives and disrupters and converts up to 48 mol% polymer carbon into soluble products, enabling chemical recycling of complex plastic waste ...
Ciaran W. Lahive, Amy A. Cuthbertson, Anna N. Walsh, Sydney E. Reiber, Hannah M. Alt, Brenna A. Black, Christopher Botello, Jason S. DesVeaux, Spencer Lask, Clarissa Lincoln, William E. Michener, Joel Miscall, Kelsey J. Ramirez, Lisa M. Stanley, Sean P. Woodworth, Shannon S. Stahl, Gregg T. Beckham   +16 more
wiley   +1 more source

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

Advanced Materials, Volume 38, Issue 22, 17 April 2026.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

A photon phreak digs the LDEF happening [PDF]

A year ago at the First Long Duration Exposure Facility (LDEF) Post-Retrieval Symposium, detailed measurements on trunnion sections, as well as results from 'intentional' samples (Co, Ni, In, Ta, and V) and spacecraft parts were reported. For this year's
Hurley, Donna L., Smith, Alan R.
core   +1 more source

Oxygen Evolution Reaction Catalysts for Acidic‐Media CO2 Electrolyzers

Advanced Materials, Volume 38, Issue 19, 1 April 2026.
Acidic‐media CO2 electroreduction (CO2R) could decarbonize chemical production, despite relying on rare‐earth elements for anodic oxygen evolution reaction (OER). Transferring the learnings from mature sister technologies (water electrolysis) could accelerate technological development.
Mingcheng Huang, Adnan Ozden
wiley   +1 more source

Ligand architecture and secondary‐sphere effects in a well‐defined cobalt(IV)–oxo complex

Bulletin of the Korean Chemical Society, Volume 47, Issue 4, Page 484-492, April 2026.
A well‐defined cobalt(IV)–oxo complex supported by a neutral tetraazamacrocyclic ligand is generated and fully characterized. The cobalt(IV)–oxo species exhibits electrophilic oxygen‐atom and hydrogen‐atom transfer reactivity, strongly modulated by protonation and secondary coordination sphere effects, providing new insight into structure–reactivity ...
Ying Xing, Mi Sook Seo, Yong‐Min Lee, Wonwoo Nam   +3 more
wiley   +1 more source

Rhodium(II) Porphyrins: Unusual Transition States and the Quest for Catalytic Turnover

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
Rh(II) porphyrin metalloradicals can homolytically cleave strong bonds via intriguing multi‐component transition states. Their use in catalysis has been hampered, however, by a tendency to form thermodynamically stable Rh(III) intermediates. This Concept article highlights different strategies that can unlock the latent potential of Rh(II) porphyrin ...
Zihang Qiu, Constanze N. Neumann
wiley   +1 more source

Abiotic Fixation of CO2 on Nanostructured Cobalt Particles for the Production of C1–C31 n‐Alkane Hydrocarbon Fuels

ChemCatChem, Volume 18, Issue 8, 28 April 2026.
Hydrocarbon fuels are widely used because of their high energy density, convenience of use and storage, and beneficial cost structure. Concerns about nonrenewable sources and environmental impact have prompted research into their production. Here, linear hydrocarbons with chain lengths from 1 to 31 carbon atoms were formed from CO2 and water using a ...
Mahesh J. Thalavitiya Acharige, Cong Wang, Haizhou Ren, Ming Zeng, Mengyan Shen, Marina Ruths, David K. Ryan   +6 more
wiley   +1 more source

Recent Advances in Carbonyl–Olefin and Carbonyl–Alkyne Metathesis Reactions

ChemistryEurope, Volume 4, Issue 4, April 2026.
Carbonyl–olefin and carbonyl–alkyne metathesis enable atom‐economic C–C bond formation beyond classical olefin metathesis. This review highlights recent advances in photochemical, Lewis‐acid, Brønsted‐acid, and organocatalytic strategies, mechanistic insights, and synthetic applications, showcasing carbonyl metathesis as a versatile platform for modern
Komal Kalonia, Ramees Komath, Martin Breugst   +2 more
wiley   +1 more source