A Non-Exploding Alkali Metal Drop on Water: From Blue Solvated Electrons to Bursting Molten Hydroxide; Angewandte Chemie International Edition; Vol. 55, iss. 42

A Non-Exploding Alkali Metal Drop on Water: From Blue Solvated Electrons to Bursting Molten Hydroxide

Bibliografiske detaljer
Parent link:Angewandte Chemie International Edition.— , [s. a.]
Vol. 55, iss. 42.— 2016.— [P. 13019-13022]
Institution som forfatter: Национальный исследовательский Томский политехнический университет Физико-технический институт Кафедра общей физики
Andre forfattere: Mason P. E. Philip E., Buttersack T. Tillmann, Bauerecker (Bauerekker) Z. (S.) H. Zigurd (Sigurd) Hermann, Jungwirth P.
Summary:Title screen
Alkali metals in water are always at the brink of explosion. Herein, we show that this vigorous reaction can be kept in a non-exploding regime, revealing a fascinating richness of hitherto unexplored chemical processes. A combination of high-speed camera imaging and visible/near-infrared/infrared spectroscopy allowed us to catch and characterize the system at each stage of the reaction. After gently placing a drop of a sodium/potassium alloy on water under an inert atmosphere, the production of solvated electrons became so strong that their characteristic blue color could be observed with the naked eye. The exoergic reaction leading to the formation of hydrogen and hydroxide eventually heated the alkali metal drop such that it became glowing red, and part of the metal evaporated. As a result of the reaction, a perfectly transparent drop consisting of molten hydroxide was temporarily stabilized on water through the Leidenfrost effect, bursting spectacularly after it had cooled sufficiently.
Режим доступа: по договору с организацией-держателем ресурса
Sprog:engelsk
Udgivet: 2016
Fag:
электронный ресурс
труды учёных ТПУ
щелочные металлы
сольватированные электроны
вода
Online adgang:http://dx.doi.org/10.1002/anie.201605986
Format: Electronisk Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=651789

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