Results 141 to 150 of about 42,604 (255)

Calcium silicate-diorthocarbonate is a missing link in deep-mantle chemistry of silicates and carbonates. [PDF]

Nat Commun
Aprilis G, Pantousas A, Aslandukova A, Kupenko I, Li X, Müller S, Hanfland M, Dubrovinsky L, Pakhomova A.   +8 more
europepmc   +1 more source

Silicates

This website is dedicated to silicates. It includes tectosilicates, phyllosilicates, inosilicates, cyclosilicates, sorosilicates and neosilicates. For each sub-class, a brief description is included, as well as a list of common minerals. Clicking on each

core  

Challenges of Bio‐Syngas Conversion to High‐Value‐Added Liquid Chemicals and Fuels via COx Hydrogenation

Carbon Energy, EarlyView.
Converting biomass‐derived syngas into value‐added fuels and chemicals offers a promising route toward carbon neutrality, yet unfavorable H2/COx ratios, elevated CO2 levels, and trace impurities pose persistent obstacles. This review examines strategies spanning syngas conditioning, impurity‐tolerant catalyst development, and integrated process design,
Xuan Bie, Shiyu Zhang, Yuyao Yang, Shijie Yu, Jiahui Hu, Qinghai Li, Yanguo Zhang, Hui Zhou   +7 more
wiley   +1 more source

Multivalent RNA‐Cleaving Agents on a Cubic Octameric Silsesquioxane Core

Chemistry – A European Journal, EarlyView.
RNA‐cleaving agents on a cubic octameric silsesquioxane core were synthesized and characterized. Several catalytic systems of these structures were screened using hexaribonucleotide models. The best systems were then further used to study their catalytic efficiency in cleaving a HER2 mRNA model sequence. The induced cleavage sites were also determined.
Hanni Haapsaari, Iris Tuomi, Pasi Virta
wiley   +1 more source

Non‐Covalent Fluorine–Silica Anchoring of a Molecular Platinum(II) bis(NHC) Catalyst: Structure, Interface Control, and Hydrosilylation Activity

Chemistry – A European Journal, EarlyView.
A Pt(II) bis(NHC) complex is immobilized on mesoporous silica through directional F–Si interactions encoded in the ligand framework. Quantitative 19F{29Si} REDOR experiments and molecular dynamics simulations establish Å‐scale catalyst–support contacts and define the interfacial organization.
Alexander Bergen, Cindy‐Ly Tavera‐Méndez, Valentina Eichhorn, Philip Maier, Elias Harrer, Andreas Scheurer, Frank W. Heinemann, Dirk Zahn, Martin Hartmann, Dorothea Wisser, Karsten Meyer   +10 more
wiley   +1 more source

Hydrogen Release From Silicon─Hydrogen Systems: From Surface Chemistry to Higher‐Coordinate Molecular Mechanisms

Chemistry – A European Journal, EarlyView.
Hydrogen‐release processes in silicon chemistry occur across a broad spectrum of systems, including crystalline silicon surfaces, nanoporous materials, Zintl phases, and molecular hydrides. This Review highlights how Si─H activation and H2 evolution are governed by structure, coordination environment, and dynamic access to reactive geometries, with ...
Robin Rothfelder, Jonathan O. Bauer
wiley   +1 more source

Oxidative Generation and Reactivity of the Cyclopropyl Radical From a Martin Silicate. [PDF]

Chemistry
Lakhal A, Millanvois A, Fensterbank L, Ollivier C.   +3 more
europepmc   +1 more source

Si(OTeF5)4 – A Strong, Homoleptic Pentafluoroorthotellurate‐Based Lewis Superacidic Silane

Chemistry – A European Journal, EarlyView.
The homoleptic pentafluoroorthotellurate‐based silane Si(OTeF5)4 was synthesized and fully characterized via spectroscopic techniques. The Lewis superacidic properties were investigated theoretically as well as experimentally and its utilization as a Lewis acid is demonstrated by the reaction with nitrogen bases.
Friederike Oesten, Niklas Limberg, Anja Wiesner, Simon Steinhauer, Lukas Fischer, Sebastian Riedel   +5 more
wiley   +1 more source

Deep carbon cycling drives the splitting of the 520-km mantle discontinuity. [PDF]

Nat Commun
Zhang X, Wei W, Zhang Y, Mao Z, Sun N, Sun D, Leng W, Yoshino T, Mashino I, Katsura T, Li J, Li W, Lin JF.   +12 more
europepmc   +1 more source

Peroxodisulfate‐Enhanced Leaching of Deep‐Sea Manganese Crusts and Sulfides

Chemie Ingenieur Technik, EarlyView.
Ammonium peroxodisulfate enables efficient leaching of deep‐sea manganese crusts and massive sulfides while offering electrolytic recycling. High leaching yields for V, Mn, Co, Mo, Sn, and W, along with complete leaching of As and Sb, highlight its potential as a powerful and sustainable oxidant for marine resource processing.
Bastian Hansel, Lucas Thumeyer, Ebbe H. Hartz, Håvard Hallås Stubseid, Peter Fröhlich, Martin Bertau   +5 more
wiley   +1 more source