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Chemicals, plastics and rubber industries

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Neopentane and solid acids: Direct hydron exchange before cracking

Article Abstract:

The hydrogen/deuterium (H/D) exchange reaction of 2,2-dimethylpropane (neopentane) over [D.sub.2]O-exchanged zeolites is investigated using a batch recirculation reactor by means of gas chromatography coupled with mass spectrometer. Findings suggest that H/D exchange between solid acids and neopentane is only possible through a carbonium ion since no primary product from oxidation can be stabilized by fast deprotonation/reprotonation process.

Author: Yinyong Sun, Walspurger, Stephane, Sommer, Jean, Sido, Abdelkarim Sani Souna
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
Analytical Laboratory Instrument Manufacturing, Analytical instruments, Ion Mass Spectroscopy, Usage, Spectra, Mass spectrometry, Deuterium, Structure

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Alkaline treatment of iron-containing MFI zeolites. Influence on mesoporosity development and iron speciation

Article Abstract:

The effect of alkaline treatment on the mesoporosity development and iron speciation in Fe-MFI zeolites is investigated. Iron in framework positions has shown to provoke mesopore formation, whereas nonframework iron species suppresses silicon leaching and lowers the extent of extra porosity.

Author: Bruckner, Angelika, Groen, Johan C., Moulijn, Jacob A., Perez-Ramirez, Javier, Berrier, Elise, Maldonado, Lluis
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
Spain, Iron compounds, Properties, Atomic properties

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Subjects list: Zeolites, Chemical properties
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