Study on Sorption Performance of Carbon Dioxide and Toluene by the Biomass-Based Porous Carbon
We studied the sorption performance of carbon dioxide (CO2) and toluene by the biomass-based porous carbon (the activated porous carbon derived from liquefied bark-phenol formaldehyde resins and nori-based porous carbon). Due to their much more developed porosity, the bark-PF based porous carbons (BRC) showed much higher sorption capacities of CO2 and toluene. At 100 kPa, BRC-3 exhibited the highest CO2 sorption capacities, up to 7.23 and 4.45 mol·g–1 at 0 °C and 25 °C, respectively. Comparatively, the nori-based porous materials gived better CO2 sorption performance at low pressure. The CO2 sorption capacity of Nori-ZnCl2 -2:1-700 is 0.97 mol·g–1 at 25 °C under 15 kPa. BRC-3, the materials with the highest pore volume, showed the highest toluene sorption capacity of 145 mg·g–1. All the results indicated that the effective pore channels are different for CO2 or toluene because of the difference in molecular diameters. For the smaller CO2 molecular, the micropores smaller than 1 nm, especially the extremely smaller than 0.7 nm, are most effective. However, for the much larger toluene molecular, the big micropores and small sized mesopores are effective.
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Document Type: Short Communication
Publication date: September 1, 2017
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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