Volume 92 Issue 16 | pp. 34-35
Issue Date: April 21, 2014

Adsorption Calorimetry

ACS Meeting News: Underused technique for measuring bond strength reveals new phenomena in surface chemistry
Department: Science & Technology
News Channels: Analytical SCENE, JACS In C&EN, Nano SCENE
Keywords: calorimetry, adsorption, enthalpy, surface science, molecular beam

Like someone who finally sits after a long, tiring day of standing, gas-phase molecules breathe a sigh of relief, so to speak, as they “take a seat” (adsorb) on solid surfaces. The sigh comes in the form of a momentary pulse of heat that the molecules “exhale” as they form surface bonds.

The quantity of heat released in that exothermic process is a measure of adsorption bond strength. The strength of the surface bond directly . . .

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