Publications associées à Oxygen isotope fractionation during amorphous to crystalline calcium carbonate transformation at varying relative humidity and temperature

Publications associées (9)

Thermodynamic and kinetic analysis of autothermal syngas-generating limestone calcination process for ammonia synthesis

A novel autothermal methane-reforming limestone-calcination process is analyzed through thermodynamic and kinetic investigations to yield syngas for direct ammonia production. A comprehensive correlation is developed to determine the required gaseous feed ...

2025

Mechanism of First Proton‐Coupled Electron Transfer of Water Oxidation at the BiVO4‐Water Interface

Alfredo Pasquarello, Yongbin Zhuang

The oxygen evolution reaction (OER) at the BiVO4‐water interface is considered to be the bottleneck of the overall water splitting at this aqueous interface. To provide insight into the mechanism of this reaction, we focus on the first proton‐coupled elect ...

Wiley2025

N2O Activation and NO Adsorption Control the Simultaneous Conversion of N2O and NO Using NH3 over Fe-ZSM-5

Oliver Kröcher, Filippo Buttignol

Fe-exchanged zeolites are heterogeneous catalysts that can potentially ensure simultaneous conversion of nitrous oxide (N2O) and nitric oxide (NO) using ammonia (NH3) as a selective reducing agent through their selective catalytic reduction reaction (N2O-N ...

AMER CHEMICAL SOC2025

Pentavalent U reactivity impacts U isotopic fractionation during reduction by magnetite

Rizlan Bernier-Latmani, Barbora Bártová, Luca Loreggian, Zezhen Pan

Meaningful interpretation of U isotope measurements relies on unraveling the impact of reduction mechanisms on the isotopic fractionation. Here, the isotope fractionation of hexavalent U [U(VI)] was investigated during its reductive mineralization by magne ...

2024

Structural phase transition in NH₄F under extreme pressure conditions

Richard Gaal

Ammonium fluoride (NH₄F) exhibits a variety of crystalline phases depending on temperature and pressure. By employing Raman spectroscopy and synchrotron X-ray diffraction beyond megabar pressures (up to 140 GPa), we have here observed a novel dense solid p ...

2024

Observation of a Plastic Crystal in Water-Ammonia Mixtures under High Pressure and Temperature

Livia Eleonora Bove Kado

Solid mixtures of ammonia and water, the so-called ammonia hydrates, are thought to be major components of solar and extra-solar icy planets. We present here a thorough characterization of the recently reported high pressure (P)-temperature (T) phase VII o ...

AMER CHEMICAL SOC2023

Advances in hydration and thermodynamics of cementitious systems

Karen Scrivener, Aslam Kunhi Mohamed, Fabien Jacques Michel Georget

Optimising the hydration of cementitious materials is crucial to leverage their full potential and avoid wasting resources, embodied energy and CO2. Understanding the fundamental mechanisms is key to reach these objectives. In this paper, we review progres ...

Pergamon-Elsevier Science Ltd2023

Fingerprints of Frontal Passages and Post-Depositional Effects in the Stable Water Isotope Signal of Seasonal Alpine Snow

Michael Lehning, Yoann Nicolas Sadowski

Stable water isotopes are used as a paleothermometer in ice cores for climate reconstructions over the past millennia. The underlying physical processes involved in the isotope-temperature relation, however, unfold at much shorter timescales. Here, we stud ...

AMER GEOPHYSICAL UNION2022

Super-resolved Optical Mapping of Reactive Sulfur-Vacancies in Two-Dimensional Transition Metal Dichalcogenides

Aleksandra Radenovic, Andras Kis, Magalí Alejandra Lingenfelder, Martina Lihter, Michal Daniel Macha, Zhenyu Wang, Yanfei Zhao, Jean Camille Benjamin Comtet, Karla Banjac, Miao Zhang, Tzu-Heng Chen, Jing Zhang

Transition metal dichalcogenides (TMDs) represent a class of semiconducting two-dimensional (2D) materials with exciting properties. In particular, defects in 2D-TMDs and their molecular interactions with the environment can crucially affect their physical ...

AMER CHEMICAL SOC2021