The prediction of char combustion kinetics at high temperature

The Effects of Particle Size on the Kinetic Parameters in the Reaction of Nano-Nio with Sodium Bisulfate Solution

“…This trend is consistent with some results in the literature [3,4], but contrasts with others [7,8]. In these latter papers, Coda et al [7] and Nugroho et al [8] reported that the pre-exponential factor of the combustion reactions of coals increased with decrease of the coal particle sizes.…”

“…For example, it has been found that the reaction rate constant increases with decrease in the particle diameter of a reactant [1 -4]; by contrast, the logarithm of the rate constant [3,4], or the rate constant itself [5,6] has been linearly related to the reciprocal of the particle diameter. Again, the reaction order has been found to increase with decrease of the particle diameter [2 -4]; the pre-exponential factor has been found either to increase [3,4] or decrease [7,8] with decrease of the particle diameter; and there is reported to be a linear relation between the logarithm of the pre-exponential factor and the reciprocal of the particle diameter [3,4]; the apparent activation energy is related to the particle diameter [9,10], and either decreases [3,4,10 -13] or increases [8] with decrease of the diameter.…”

Active carbon production from used tire in two-stage procedure: industrial pyrolysis and bench scale activation with H2O–CO2 mixture

“…Several recent publications [20][21][22][23][24][25] indicate the interest in developing sustainable and environmentally safe recycling processes to produce high added value products from those wastes, such as active carbon. The actual active surface area, characteristics and performance of a particular activated carbon source depends largely on the nature of the material it was manufactured from and the process by which it was activated [1][2][3][4][5][6][7][8][9][10][11][12]17,25]. Since tires are made mostly of rubber, the re-use of their carbon content in the form of activated carbon can be very rewarding.…”

Ultrafine particulate matter formation in the early stage of pulverized coal combustion of high-sodium lignite

“…Table 2. [36,[42][43][44]. It is known that the ambient temperature also actively 378 affect both the intrinsic reaction rate of carbon oxidation and the 379 diffusion of oxygen to the coal particle surface [45,46] Fig.…”