INOR 1011 |
| Single-phase powder crystals of SBE-type metal aluminophosphates (e.g. cobalt, magnesium and manganese) were obtained using aging techniques and templating processes. In addition, the extent and characteristics of its detemplation were investigated. While XRD data confirmed the presence of a rich SBE phase, SEM images showed a hexagonal plate-like crystal growth for the cobalt variant. The observed particle morphology for the SBE-Mg and -Mn revealed truncated hexahedrons as previously reported in single crystal studies. Treatments in oxidative atmosphere and vacuum were used to study the removal of the structure-directing agent (SDA). The former resulted in a “non-porous” framework as evidenced by the low nitrogen uptake at 77K during porosimetry tests. Vacuum treatment using low evacuating rates and an optimum temperature of 648 K, however, resulted in higher surface areas (730 m2/g). In terms of potential applications for this novel material, we are exploring the synthesis of thin film oriented membranes that will host and provide support for the growth of carbon nanotubes. |
|
Synthesis and Characterization of Materials
9:00 AM-12:20 PM, Thursday, April 10, 2008 Morial Convention Center -- Rm. 218, Oral
Division of Inorganic Chemistry |