Trimethylamine as a probe molecule to differentiate acid sites in Y-FAU zeolite: FTIR study
Article Abstract:
Trimethylamine (TMA) is studied as a probe molecule that is able to distinguish between the different Bronsted acid sites in zeolite frameworks. Typical infrared (IR) bands assigned to TMA-protonated species are detected in the HY zeolite, the wavenumbers of some typical IR bands assigned to TMA-protonated species appear to depend on the acidic strength and a complementary study with ZSM-5 and X-FAU samples have confirmed this proposition.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Destructive adsorption of CCl(sub 4) over lanthanum-based solids: Linking activity to acid-base properties
Article Abstract:
The relative activities of a low-surface crystalline and high-surface amorphous LaOCl, are compared for the destructive adsorption of CCl(sub 4). The analogy between methanol dissociation and the removal of the first chlorine atom in the destructive adsorption of CCl(sub 4), the sites enabling twofold coordination were likely to be the same Lewis acid sites actively involved in the destructive adsorption of CCl(sub 4).
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Infrared study of the surface properties of HTB-type A1-, Cr-, Fe- hydroxyflourides
Article Abstract:
The surface characteristics of iron, chromium and aluminum fluorides in their hexagonal tungsten bronze (HTB) structure are examined by infrared spectroscopy. The power of the acid sites is clearly found powerful than that reported for iron, chromium and aluminum oxides.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Temperature-induced transformations in CoAPO-34 molecular sieve: A combined in situ X-ray diffraction and FTIR study
- Abstracts: A unified single-event microkinetic model for alkane hydroconversion in different aggregation states on Pt/H-USY-zeolites
- Abstracts: Thermodynamic study of water adsorption in high-silica zeolites. Can Cu+-exchanged zeolites store molecular hydrogen? An ab-initio periodic study compared with low temperature FTIR
- Abstracts: Determination of the electron transfer mechanism through decomposition of the density matrix. Electron transport and back reaction in nanocrystalline TiO2 films prepared by hydrothermal crystallization
- Abstracts: Kinetic analysis of oxygen reduction on Pt (111) in acid solutions: intrinsic kinetic parameters and anion adsorption effects