Download Acidity and Basicity by Eike Brunner, Harry Pfeifer (auth.) PDF

By Eike Brunner, Harry Pfeifer (auth.)

This is the 1st instruction manual on zeolites and different microporous fabrics. it's an updated, hugely refined choice of details in case you care for zeolites in or at educational associations in addition to being a advisor for newcomers.

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Kheir AA, Haw JF (1994) J Am Chem Soc 116:817 185. fr 1 Introduction . . . . . . . . . . . . . . . . . . 46 2 Experimental . . . . . . . . . . . . . . . . . 47 3 Limitations . . . . . . . . . . . . . . . . . . 2 Acidity and Basicity in Zeolites . . . . . . . . . . . . Influence of the Zeolite Structure and Pore Diameter . . . . . . Influence of the Si/Al Ratio . . . . . . . . . . . . . . 3 Probe Molecules . . . .

2 Mordenites . . . . . . . . . . . . . . . . . . Influence of the Probe Molecule . . . . . . . . . . . . Influence of the Adsorption Temperature . . . . . . . . . . 107 108 109 . . . . . 46 A. 5 Effect of Pretreatment . . . . . . . . . . . . . . . Influence of the Exchange Level . . . . . . . . . .

11, namely the two maxima at the left edge of the spectrum and the step at the right edge, vanish for loadings higher than the concentration of accessible bridging hydroxyl groups. In the latter case, IRspectroscopic investigations reveal the existence of physisorbed CO besides CO molecules adsorbed on bridging hydroxyl groups. Therefore, it has to be concluded that the characteristic shape of spectrum B shown in Fig. 11 is not caused by a superposition of two different signals due to 13 CO molecules in different adsorption states.

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