연소전 조건에서 탄산칼륨계 흡수제의 이산화탄소 흡수특성

Here, a cheap and fast way to measure the CO2 absorption rate and capacity through thermogravimetric analysis (TGA) is proposed. The absorption of CO2 in 11 ILs varying in anion, cation, alkyl chain length, and C2 methylation was then investigated. Three parameters comprehensively characterizing the absorption capacity and kinetics, including the absorption capacity (x), the initial absorption rate (r10), and the degree of difficulty to reach phase equilibrium (t0.9), were proposed as the standards to evaluate the potential of ILs for CO2 capture. Results show that the correlation between absorption capacity and the degree of difficulty to reach phase equilibrium is complicated. However, ILs with higher absorption capacity usually have a higher initial absorption rate, suggesting a simple way to estimate absorption capacity just by determining initial absorption rate for less than 10 min. More importantly, ILs with the acetate ([Ac]) anions have an advantage in x, r10, and t0.9 over other ILs, indicating that [Ac]-based ILs are promising candidates for CO2 capture in practice.

Name change for Dosapro Milton Roy

Analysis of the reduction of energy cost by using MEA-MDEA-PZ solvent for post-combustion carbon dioxide capture (PCC)

Evaluation of novel aqueous piperazine-based physical-chemical solutions as biphasic solvents for CO2 capture: Initial absorption rate, equilibrium solubility, phase separation and desorption rate

The absorption capacity and initial absorption rate in 5 %, 10%, 15 % and 20% under the constant temperature at and the initial absorption rate in mixture of different alkaline salts such as , and were measured using batch type stirred cell contractor. 10% showed the highest absorption capacity and and showed the somewhat increased absorption capacity and initial absorption rate respectively. Further more, we have studied the effect of adding Pz and Pp to . The result showed that absorption rate of was increased by adding these additives.

Effect of number of amine groups in aqueous polyamine solution on carbon dioxide (CO 2 ) capture activities

Carbon dioxide (CO2) capture performance of aqueous tri-solvent blends containing 2-amino-2-methyl-1-propanol (AMP) and methyldiethanolamine (MDEA) promoted by diethylenetriamine (DETA)

The effect molecular structural variations has on the CO2 absorption characteristics of heterocyclic amines

The significant and rapid reduction of greenhouse gas emissions is recognized as necessary to mitigate the potential climate effects from global warming. The postcombustion capture (PCC) and storage of carbon dioxide (CO2) produced from the use of fossil fuels for electricity generation is a key technology needed to achieve these reductions. The most mature technology for CO2 capture is reversible chemical absorption into an aqueous amine solution. In this study the results from measurements of the CO2 absorption capacity of aqueous amine solutions for 76 different amines are presented. Measurements were made using both a novel isothermal gravimetric analysis (IGA) method and a traditional absorption apparatus. Seven amines, consisting of one primary, three secondary, and three tertiary amines, were identified as exhibiting outstanding absorption capacities. Most have a number of structural features in common including steric hindrance and hydroxyl functionality 2 or 3 carbons from the nitrogen. Initial CO2 absorption rate data from the IGA measurements was also used to indicate relative absorption rates. Most of the outstanding performers in terms of capacity also showed initial absorption rates comparable to the industry standard monoethanolamine (MEA). This indicates, in terms of both absorption capacity and kinetics, that they are promising candidates for further investigation.

Improving the CO2 solubility in aqueous mixture of MDEA and different polyamine promoters: The effects of primary and secondary functional groups

Kinetics of CO2 capture by ionic liquid—CO2 binding organic liquid dual systems

Absorption heat, solubility, absorption and desorption rates, cyclic capacity, heat duty, and absorption kinetic modeling of AMP–DETA blend for post–combustion CO2 capture

Kinetics of reaction between CO2 and ionic liquid-carbon dioxide binding organic liquid hybrid systems: Analysis of gas-liquid absorption and stopped flow experiments

Objective: To evaluate parameters about wettability, water absorption or swelling of excipients in forms of powders or dosage through various methods systematically and explore its correlation with tablet disintegration.Material and methods: The water penetration and swelling of powders with different proportions of excipients including microcrystalline cellulose (MCC), mannitol, low-substituted hydroxypropyl cellulose (L-HPC), crospolyvinylpyrrolidone (PVPP), carboxymethyl starch sodium (CMS-Na), croscarmellose sodium (CCMC-Na) and magnesium stearate (MgSt) were determined by Washburn capillary rise. Both contact angle of water on the excipient compacts and surface swelling volume were measured by sessile drop technique. Moreover, the test about water absorption and swelling of compacts was fulfilled by a modified method. Eventually, the disintegration of tablets with or without loratadine was performed according to the method described in USP.Results and discussion: These parameters were successfully identified by the methods above, which proved that excipient wettability or swelling properties varied with the structure of excipients. For example, MgSt could improve the water uptake, while impeded tablet swelling. Furthermore, in the present study it is verified that tablet disintegration was closely related to these parameters, especially wetting rate and initial water absorption rate. The higher wetting rate of water on tablet or initial water absorption rate, the faster swelling it be, resulting in the shorter tablet disintegration time.Conclusion: The methods utilized in the present study were feasible and effective. The disintegration of tablets did relate to these parameters, especially wetting rate and initial water absorption rate.

Effects of surfactant type and structure on properties of amines for carbon dioxide capture