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The role of butylbenzene carbenium ions in the acid catalyzed cracking of polystyrene. Transformation of n-butylbenzene, sec-butylbenzene, iso-butylbenzene, tert-butylbenzene, 4-phenyl-1-butene, n-propylbenzene and n-hexylbenzene over silicaalumina and alumina acid catalysts
| Content Provider | Paperity |
|---|---|
| Author | Dul, Magdalena Kominiak, Magdalena Marczewska, Hanna Marczewski, Marek |
| Abstract | The obtained results show that styrene dimers, which are the primary transition products of PS cracking undergo consecutive reactions over acid centers of high acid strength (SiO2–Al2O3(45 %); −10.8 < HO ≤ −7.9) as well as centers of low acid strength (γ-Al2O3; HO > −3.3) at sufficiently high reaction temperatures (723–773 K). It is proposed that phenylbutenyl carbenium ion obtained due to dealkylation reaction converts into coke by the successive elimination of H+ and H− ions, which in turn take part in hydrogen transfer reactions resulting in the hydrogenation of styrene dimers to diphenylbutane. The dealkylation of this compound leads to active γ-butylbenzene carbenium ion which is a key intermediate for the formation of indane and naphthalene derivatives. |
| Starting Page | 107 |
| Ending Page | 120 |
| File Format | HTM / HTML |
| ISSN | 18785190 |
| DOI | 10.1007/s11144-016-1050-5 |
| Issue Number | 1 |
| Journal | Reaction Kinetics, Mechanisms and Catalysis |
| Volume Number | 119 |
| e-ISSN | 18785204 |
| Language | English |
| Publisher | Springer International Publishing |
| Publisher Date | 2016-10-01 |
| Access Restriction | Open |
| Subject Keyword | Butylbenzenes reactions Acid strength Alumina Polystyrene decomposition Silicaalumina |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Catalysis |
