Nondestructive identification of colloidal molecular sieves stabilized in water
Article Abstract:
The crystallization process of colloidal (nanosized) molecular sieves stabilized in water with Raman and (super 13)C NMR spectroscopic methods was investigated by using the encapsulation of small quaternary ammonium ions in zeolite framework. The molecular packing effect and restricted mobility resulted in the shifts and substantial broadening of the (super 13)C NMR signals and, position changes and relative intensities of the Raman peaks.
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:
A model for the structure of MCM-41 incorporating surface roughness
Article Abstract:
An alternate model of MCM-41 based on molecular simulations is presented giving values to surface area that are in closer agreement to those determined by experiments. The structure of interstitial silicates between the mesopores produces a level of surface roughness that increases the surface beyond its nominal value, calculated by assuming smooth pores.
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:
Synthesis, characterization and catalytic performance of Cr-incorporated aluminoborate octahedral molecular sieves
Article Abstract:
A series of Cr-incorporated PKU-1 molecular sieves (Cr-PKU-1) are synthesized by using boric acid as a flux, and the physicochemical properties are characterized by XRD, ICP, SEM, XPS, UV-vis, and NH(sub 3)-TPD methods. The syntheses of the Cr-incorporated PKU-1 can be realized directly by reactions in the boric acid flux.
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:
- Abstracts: Long-range interactions between soft colloidal particles in slit-pore geometries. XPS study of interface and ligand effects in supported Cu(sub 2)O and CuO nanometric particles
- Abstracts: Peptide-TiO(sub 2) surface interaction in solution by ab initio and molecular dynamics simulations
- Abstracts: Photo catalyst of lamellar aggregates of RuO(sub x)-loaded perovskite nanosheets for overall water splitting
- Abstracts: Formation of titanium nitride nanoparticles within mesoporous silica SBA-15. Methane sorption in ordered mesoporous silica SBA-15 in the presence of water
- Abstracts: Gas permeability in polymer- and surfactant-stabilized bubble films. Optically active polymer carbon nanotube composite