Determinación del área superficial de redes organometálicas mediante técnicas termogravimétricas
Se plantea un modelo matemático fundamentado en los principios del modelo BET para la medición de áreas superficiales y en la teoría de adsorción de Polanyi, con base en el fenómeno de desorción ocurrido en el análisis termogravimétrico de los MOFs. El modelo se realiza con el objetivo de encontrar...
- Autores:
-
Ariza Quiroga, Suzan Katherine
- Tipo de recurso:
- http://purl.org/coar/version/c_b1a7d7d4d402bcce
- Fecha de publicación:
- 2016
- Institución:
- Universidad Industrial de Santander
- Repositorio:
- Repositorio UIS
- Idioma:
- spa
- OAI Identifier:
- oai:noesis.uis.edu.co:20.500.14071/34384
- Palabra clave:
- Redes Organometálicas
Área Superficial
Análisis Termogravimétrico
Cubtc
Zrbtc.
Is proposed a mathematical model grounded on the principles of BET method and the Polanyi adsorption theory; It is based on the desorption phenomenon occurred in thermogravimetric analysis of Metal-Organic Frameworks (MOFs). The objective is to measure the surface areas of porous materials. The model is made with the aim of finding the coordination polymers surface area from the results achieved by the materials weight loss at certain temperatures. Two different familieas of coordination polymers (ZrBTC and CuBTC) are synthesized at different conditions. It was studied the behavior of weight loss with increasing the temperature in the thermogravimetric analysis for each material and surface area measurements were performed using the BET model. Subsequently
it was found that there is a relationship between the weight loss measured by thermogravimetric analysis and the surface area reported by the BET model
which shows that these two results are directly proportional to the adsorption capacity of the porous materials. The proposed mathematical model is implemented
and yields satisfactory results when calculating the surface areas of both MOFs families
with close values to those obtained by the BET model. The results for the two families of coordination polymers were compared
and It is determined that the model gives a better fitting for the synthesized MOF ZrBTC. 1
- Rights
- License
- Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)