The product of butene oligomerization in NaH-Y zeolites decomposes at high temperatures forming alkene molecules. They may desorb or undergo further transformations in the zeolitic supercages forming alkanes and polycyclic aromatic compounds. This last process occurs in several stages depending on t
I.r. studies of the nature of oligomer in NaH-Y zeolites
β Scribed by Jerzy Datka
- Book ID
- 104290370
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 379 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0144-2449
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β¦ Synopsis
Butene oligomerization on NaH-Y zeolites in which some OH groups vibrating at 3640 cm -1 were removed by pyridine adsorption was studied by the i.r. spectroscopy. In each zeolitic supercage in which butene oligomerization takes place one proton is transmitted from the 3640 OH group to the oligomerizing butene molecules, and it is suggested that the oligomer is an alkyl carbo-cation. Another argument supporting this hypothesis was provided by measuring the extinction coefficients of C-H stretching vibration bands.
π SIMILAR VOLUMES
The absorption of CO on variously treated samples of CuNa-Y zeolite has been studied. The number and position of the v(C0) bands is shown to be a function of the treatment conditions. This enables previously published results to be rationalized. Bands at 2156,2142, and 2127 cm-' are due to Cu(l)-CC