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| Author(s): |
Marcelo Dutra da Silva
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Escola Politécnica (EP/BC) |
| Defense date: | 2017-08-07 |
| Examining board members: |
Roberto Guardani;
José Mansur Assaf;
João Guilherme Rocha Poço
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| Advisor: | Roberto Guardani; Martin Schmal |
| Abstract | |
The present study is dedicated to the carboxilation reaction of methane with CO2 for acid and acetates production. These two gases contribute to the intensification of the greenhouse effect, related to the environmental problems currently faced. Thus, the use of these sources for the production of compounds with high added value is of large interest. In this study, a zinc oxide catalyst supported on graphene was synthesized and characterized using different techniques, with the objective of evaluating the morphological, textural and structural properties of the catalyst, as well as its thermal stability and reducibility. The catalyst performance was evaluated in the reaction of methane with CO2 and O2 in tests of the surface reaction at programmed temperature, with the formation of gases such as CO, H2 and H2O, and in tests using Infrared Spectroscopy technique, for the study of the interaction of methane and CO2 with the catalyst, as well as for studying the mechanisms that lead to the formation of the gases observed, and the evidence that indicates the process of formation of acids or acetates on the catalyst surface. (AU) | |
| FAPESP's process: | 14/27317-7 - Study on nanostructured catalysts for carboxylation of methane with CO2 to produce high value-added products |
| Grantee: | Marcelo Dutra da Silva |
| Support Opportunities: | Scholarships in Brazil - Master |