NMR observation of indanyl carbenium ion intermediates in the reactions of hydrocarbons on acidic zeolites

Journal Article · Wed Nov 02 04:00:00 EST 1994 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00101a044· OSTI ID:6835479

Xu, Teng; Haw, J F ^[1]

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1. Texas A M Univ., College Station, TX (United States)

In situ MAS-NMR was used to study the reactions of styrene and methylstyrene on the acidic zeolites HZSM-5, HY, and H-mordenite. The results are introduced and discussed in the context of our recently proposed reclassification of typical zeolites as strong acids rather than superacids. We also show that the observation of indanyl cations but not simply phenylcarbenium ions as persistent species in high concentration is an expected consequence of the relative acid strengths of the zeolites and carbenium ions. 55 refs., 8 figs., 2 tabs.

• DOE Contract Number: FG03-93ER14354
• OSTI ID: 6835479
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 116:22; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
ALKYLATED AROMATICS
AROMATICS
CATALYTIC CRACKING
CHARGED PARTICLES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
MAGNETIC RESONANCE
MATERIALS
MINERALS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
PYROLYSIS
REACTION INTERMEDIATES
RESONANCE
SILICATE MINERALS
STYRENE
THERMOCHEMICAL PROCESSES
ZEOLITES