Experimental IR spectroscopy

J.L Koenig, Cliapter 3 Experimental IR Spectroscopy of Polymers, in Spectroscopy of Polymers, Amer. Chem. Soc., Washington, USA, 1991, 43. 

Experimentally, IR spectroscopy can be accomplished in a number of ways by Nujol mull, KBr disc or the diffuse reflectance technique. In the KBr disc technique, the compound is mixed with KBr and compressed into a disc using a press and die. This can be a disadvantage if the compound undergoes a polymorphic transformation under pressure (see Chan and Doelker, 1985). One way to overcome this problem is to use the diffuse reflectance Fourier transform (DRIFT) technique, whereby a few milligrams of compound is dispersed in approximately 250 mg of KBr and the spectrum obtained by reflection from the surface. 

Dehydrogenation of the ethane molecule on ZnZa was studied in [25], The calculation was initiated by direct experimental IR spectroscopy observation of two stages of the reaction described by Eq. 20.3 and 20.4 [26],... 

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