The direct synthesis of organic-containing clays and thermal analysis of porphyrin-clay complexes

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5976985

Carrado, K A; Anderson, K B; Grutkoski, P S

Synthetic TMA-montmorillonites have now been made in conjunction with synthetic porphyrin-hectorites reported earlier. In order to help progress towards preparation of porphyrin-containing aluminosilicate clays, the thermal stability of porphyrin-clay systems has been examined in detail. Results from TGA and Py-GC-MS indicate that the porphyrin nucleus is extremely stable in the present of clay minerals. Substituents on the nucleus such as pyridinium or anilinium are, on the other hand, slightly destabilized. In addition, the presence of transition metals like Fe(III) in metalloporphyrins appears to catalyze decomposition of the porphyrin nucleus to some degree. The use of Py-GC-MS in conjunction with TGA results greatly clarified the assignment of weight loss peaks. 18 refs., 3 figs.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5976985
• Report Number(s): ANL/CP-72964; CONF-910402-12; ON: DE91011862
• Resource Relation: Conference: 201. American Chemical Society (ACS) national meeting, Atlanta, GA (USA), 14-19 Apr 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COMPOSITE MATERIALS
CHEMICAL PREPARATION
GRAVIMETRIC ANALYSIS
THERMAL ANALYSIS
CLAYS
GAS CHROMATOGRAPHY
MASS SPECTROSCOPY
MICA
MONTMORILLONITE
PORPHYRINS
PYROLYSIS
X-RAY DIFFRACTION
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COHERENT SCATTERING
DECOMPOSITION
DIFFRACTION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SCATTERING
SEPARATION PROCESSES
SPECTROSCOPY
SYNTHESIS
THERMOCHEMICAL PROCESSES
360601* - Other Materials- Preparation & Manufacture
360604 - Materials- Corrosion
Erosion
& Degradation
400201 - Chemical & Physicochemical Properties