Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts
Oscar E. Medina,
Jaime Gallego,
Sócrates Acevedo,
Masoud Riazi,
Raúl Ocampo-Pérez,
Farid B. Cortés,
Camilo A. Franco
Affiliations
Oscar E. Medina
Grupo de Investigación en Fenómenos de Superficie—Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, Colombia
Jaime Gallego
Química de Recursos Energéticos y Medio Ambiente, Instituto de Química, Universidad de Antioquia UdeA, Medellín 050010, Colombia
Sócrates Acevedo
Facultad de Ciencias, Escuela de Química, Universidad Central de Venezuela, Caracas 1040, Venezuela
Masoud Riazi
Enhanced Oil Recovery Research Center, IOR-EOR Research Institute, Shiraz University, Shiraz 7193616511, Iran
Raúl Ocampo-Pérez
Centro de Investigación y Estudios de Posgrado, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico
Farid B. Cortés
Grupo de Investigación en Fenómenos de Superficie—Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, Colombia
Camilo A. Franco
Grupo de Investigación en Fenómenos de Superficie—Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, Colombia
This study focuses on evaluating the volumetric hydrogen content in the gaseous mixture released from the steam catalytic gasification of n-C7 asphaltenes and resins II at low temperatures (2, CeO2 functionalized with Ni-Pd, Fe-Pd, and Co-Pd. The catalytic capacity was measured by non-isothermal (from 100 to 600 °C) and isothermal (220 °C) thermogravimetric analyses. The samples show the main decomposition peak between 200 and 230 °C for bi-elemental nanocatalysts and 300 °C for the CeO2 support, leading to reductions up to 50% in comparison with the samples in the absence of nanoparticles. At 220 °C, the conversion of both fractions increases in the order CeO2 2 production increased up to 55 vol% during catalyzed n-C7 asphaltene and resin conversion, indicating an increase of up to 70% in comparison with the non-catalyzed systems at the same temperature conditions.
