How is the general pore size distribution of activated carbon?
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The pore size distribution of activated carbon can be characterized using various methods. Low-field nuclear magnetic resonance (LFNMR) can detect the transverse relaxation time (T2) of activated carbon in different humidity conditions, allowing for the calculation of pore size distributions based on surface relaxation rate (ρ) . Another method involves using representative pore sizes to describe the pore size distribution (PSD) of activated carbon, which can be determined using N2 isotherms at 77.4 K . Optical calorimetry is also a versatile tool for pore size characterization, providing accurate results within a short time frame . Additionally, the total pore volume of pores in the range of 10-20 Å can be a significant portion of the total pore volume in activated carbon . Activation protocols, such as cycling between low-temperature oxygen chemisorption and higher temperature pyrolysis, can be used to achieve specific PSDs in activated carbon .
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4 Citations | The general pore size distribution of activated carbon can be determined using representative pores of sizes 7.0, 8.9, 18.5, and 27.9 A. |
| The pore size distribution of activated carbon can be determined using low-field nuclear magnetic resonance (LFNMR) and is in good agreement with the nitrogen adsorption method. | |
5 Citations | The general pore size distribution of activated carbon can be estimated using optical calorimetry, which provides results within roughly 1 hour. |
| The general pore size distribution of activated carbon can be controlled and optimized through activation protocols, such as cyclic-O2 or CO2 activation. | |
| The general pore size distribution of the activated carbon includes pores in the range of pore diameter 10-20 Å. |
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