Results 51 to 60 of about 1,566,044 (372)

On-surface light-induced generation of higher acenes and elucidation of their open-shell character

open access: yesNature Communications, 2019
The synthesis of large acenes via traditional solution-chemistry routes is hindered by their poor solubility and high reactivity under ambient conditions.
José I. Urgel   +11 more
doaj   +1 more source

AQUA AMMONIA ELECTROLYTIC CHARACTER AND TPP COOLANT CONDUCTOMETRIC QUALITY CONTROL UNDER HIGH TEMPERATURES AND PRESSURES

open access: yesAdvanced Engineering Research, 2013
To improve the operational conductometric steam quality control at the TPP, CHPP, and NPP, the technique for NaCl and NH4OH concentration in the saturated and superheated steam of the high- and supercritical pressure steam generators is developed, and a ...
Vladimir Nikolayevich Shcherbakov   +1 more
doaj   +1 more source

Cluster Assisted Water Dissociation Mechanism in MOF-74 and Controlling it Using Helium [PDF]

open access: yesJournal of Materials Chemistry A, 2016, 4, 11524 - 11530, 2016
We show that the water dissociation reaction H$_2$O$\rightarrow$OH+H in the confined environment of MOF-74 channels can be precisely controlled by the addition of the noble gas He. Elucidating the entire reaction process with ab initio methods and infrared (IR) spectroscopy, we prove that the interaction between water molecules is critical to the ...
arxiv   +1 more source

Gas hydrates in sustainable chemistry.

open access: yesChemical Society Reviews, 2020
Gas hydrates have received considerable attention due to their important role in flow assurance for the oil and gas industry, their extensive natural occurrence on Earth and extraterrestrial planets, and their significant applications in sustainable ...
A. Hassanpouryouzband   +11 more
semanticscholar   +1 more source

Aqueous Equilibria: Acids, Bases, and Solubility. A General Chemistry Laboratory Experiment [PDF]

open access: yes, 2000
We refer to two major types of general chemistry freshman laboratory experiments: discovery and cookbook. The typical Freshman enrolled in general chemistry has the skills to perform an experiment that is somewhere between cookbook and discovery, and we ...
Janusa, Michael A
core   +2 more sources

Controlling Chemical Reactions in Confined Environments: Water Dissociation in MOF-74

open access: yesApplied Sciences, 2018
The confined porous environment of metal organic frameworks (MOFs) is an attractive system for studying reaction mechanisms. Compared to flat oxide surfaces, MOFs have the key advantage that they exhibit a well-defined structure and present significantly
Erika M. A. Fuentes-Fernandez   +7 more
doaj   +1 more source

An Investigation into the Molecular Dynamics of the Laser Induced Dissociation of 2-Bromoethanol [PDF]

open access: yes, 2020
The unimolecular dissociation of 2-bromoethanol is investigated using computational chemistry methods both to test the reliability of the theories and methods of computational chemistry and to explore the internal mechanism of the dissociation.
French, Kirk
core   +1 more source

Mathematical Model of Limestone Calcining in the Shaft Furnace [PDF]

open access: yes, 2018
The article reviews the operation principle of the shaft furnace for calcination of carbonate materials and the options for description of thermophysical processes occurring in these furnaces.
Kudelin, S, Noskov, V, Shvydkii, V
core   +3 more sources

Chemical Impact of Stratospheric Alumina Particle Injection for Solar Radiation Modification and Related Uncertainties

open access: yesGeophysical Research Letters, 2023
Compared to stratospheric SO2 injection for climate intervention, alumina particle injection could reduce stratospheric warming and associated adverse impacts.
Sandro Vattioni   +11 more
doaj   +1 more source

Current estimates of K1* and K2* appear inconsistent with measured CO2 system parameters in cold oceanic regions [PDF]

open access: yesOcean Science, 2020
Seawater absorption of anthropogenic atmospheric carbon dioxide (CO2) has led to a range of changes in carbonate chemistry, collectively referred to as ocean acidification.
O. Sulpis   +3 more
doaj   +1 more source

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