Catalytic Alkylation Routes via Carbonium‐Ion‐Like Transition States on Acidic Zeolites | Zendy

Gounder Rajamani | Zendy; Iglesia Enrique | Zendy

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Catalytic Alkylation Routes via Carbonium‐Ion‐Like Transition States on Acidic Zeolites

Author(s) -

Gounder Rajamani,

Iglesia Enrique

Publication year - 2011

Publication title -

chemcatchem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.497

H-Index - 106

eISSN - 1867-3899

pISSN - 1867-3880

DOI - 10.1002/cctc.201100051

Subject(s) - carbonium ion , alkene , chemistry , alkylation , catalysis , alkane , reaction rate constant , carbenium ion , transition state , propene , photochemistry , medicinal chemistry , organic chemistry , inorganic chemistry , kinetics , physics , quantum mechanics

Zeolites going crackers: Brønsted acid sites in zeolites (H‐FER, H‐MFI, H‐MOR) catalyze CH 4 ‐alkene reactions at high temperatures (>700 K) via carbonium‐ion‐like transition states. The ratio of rate constants for forward and reverse reactions (alkane alkylation‐cracking, alkene dimerization‐cracking) equal their respective equilibrium constants ( K R ). In contrast, relative rates of CH 4 and alkene reactions with a given alkoxide are influenced by the local environment around acid sites.

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