Rate Measurements. Theoxidationrates of the chars were measured in 10% oxygen using a standard thermogravimetric system (Perkin-Elmer TGA 7). Since themicrobalancemeasures mass as a function of time for a given temperature, in principle theoxidation rate, i.e. the slope of the mass vs. time...
Protein aggregation in frozen trehalose formulations: effects of composition, cooling rate, and storage temperature J. Pharm. Sci., 104 (2015), pp. 4170-4184, 10.1002/jps.24646 View PDFView articleView in ScopusGoogle Scholar Duarte et al., 2020 A. Duarte, P. Rego, A. Ferreira, P. Dias...
where k(T) is the specific rate constant at temperature T (1/min), Z represents the pre-exponential factor (1/min), E represents the activation energy (J/mol), R is the molar gas constant (8.3143 J/mol K), and T represents absolute temperature (K). Table 5 Operating condition for ...
disturbances can occur during operation, triggered, for instance, by a change in feeding composition/rate, temperature fluctuations, trace element deficiency or ammonia toxicity [4]. A pervasive consequence, particularly with ammonia-induced perturbations...
Although oxygen is the overall oxidant, kinetic data suggests that ferric iron is the direct oxidant in acid systems and that temperature, pH, surface area, and the presence of iron and sulfur-oxidizing bacteria can greatly affect the rate of reaction. The vast amount of literature on the ...
(High density, high purity and good uniformity) 热氧化是最常用方法因为SiO 2层的高品质:高密度,高纯度和均匀性好 Disadvantages:exposed silicon is needed, the growth rate is low, the growth temperature is high. 缺点:需要暴露硅,生长速率低,生长温度高。 The Deal–Grove model works very well for ...
temperature effect on bacterial growth rate quantitative:温度对细菌生长速率的影响 热度: 温度对厌氧氨氧化反应器脱氮效能稳定性的影响 Effect of Temperature on Stability of Nitrogen Removal in the ANAMMOX Reactor 热度: 温度对油脂氧化速率的影响-剖析洞察 ...
The effect of the acidic buffer [H+] concentration was studied with keeping [AML], [CAT] and temperature at constant values. The rate constants decreased with increase in the [H+]. The plot of log k vs. log [H+] was linear with a negative slo...
temperature oxidation stage. It was concluded that CO2can displace the O2near the pore wall to physically prevent the adsorption of O2. Through the changing law of heating rate and a kinetics analysis, it was found that CO2can increase its activation energy by 5.3–108.3% during the slow ...
Nanosized FeCo-based solids were prepared via distinct preparation procedures. The catalytic performances of the solids for styrene oxidation in the presence of hydrogen peroxide were evaluated. The addition of promoters in FeCo such as Sn, Mo, or Cu was