CO2 adsorption on granular and monolith carbonaceous materials |
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| Institution: | 1. Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Química, Avenida Carrera 30 No. 45-03, Bogotá, Colombia;2. Universidad de los Andes, Facultad de Ciencias, Departamento de Química, Carrera 1 No. 18 A 10, Bogotá, Colombia;1. Department of Thermal and Fluid Flow Machines, Faculty of Energy and Fuels, AGH University of Science and Technology, 30 Mickiewicza Street., 30-059 Krakow, Poland;2. NILU Polska Ltd., AGH Centre of Energy, 36 Czarnowiejska Av., 30-059 Krakow, Poland;1. Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand;2. Special Research Unit for Biomass Conversion Technology for Energy and Environmental Materials, Kasetsart University, Bangkok 10900, Thailand;3. College of Materials Innovation and Technology, King Mongkut''s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;4. Kasetsart Agricultural and Agro-Industrial Product Improvement Institute, Kasetsart University, Bangkhen, Bangkok 10900, Thailand;5. Department of Materials Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan;1. School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China;2. Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Torino 10125, Italy;1. Centre of Biofuels and Bioproducts, Instituto Tecnológico Agrario de Castilla y León (ITACyL), Villarejo de Órbigo, E-24358, León, Spain;2. Chemical and Environmental Bioprocess Engineering Group, Natural Resources Institute (IRENA), Universidad de León, Avenida de Portugal 42, E-24071, León, Spain;3. Department of Chemical Engineering and Environmental Technology, Universidad de Valladolid, C/Doctor Mergelina s/n, E-47011, Valladolid, Spain;1. Universidad del Tolima, Facultad de Ciencias, Departamento de Química, Barrio Santa Helena Parte Alta, Ibagué, Colombia;2. Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Química, Departamento de Química, Avenida Carrera 30 No. 45-03, Bogotá, Colombia;3. Universidad de los Andes, Facultad de Ciencias, Departamento de Química, Carrera 1 No. 18 A 10, Bogotá, Colombia |
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| Abstract: | We evaluated the CO2 adsorption capacity on granular and monolith carbonaceous materials, obtained by chemical activation of African palm stones with H3PO4, ZnCl2 and CaCl2 solutions at different concentrations. Textural properties of the synthesized materials were analyzed using N2 adsorption measurements at 77 K, the isotherms showed obtaining of materials microporous and moderately mesoporous, with surface areas between 161 and 1700 m2/g and pore volume between 0.09 and 0.64 cm3 g−1. Were observed different behaviors for textural parameters in each series, associated with the activating agent used in the preparation. The materials obtained have a CO2 adsorption capacity between ∼114 and 254 mg CO2/g, at atmospheric pressure and 273 K. It was established that the total amount of CO2 adsorbed under these experimental conditions is defined by the narrow micropore volume (Vn) and increased the total basicity of the materials. |
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