Experiments on the Kinetics of CO2 Loaded MDEA-DEA Aqueous Solution

2014 ◽  
Vol 955-959 ◽  
pp. 2306-2309
Author(s):  
Shu Bin Zhao ◽  
Pan Zhang ◽  
Xiao Tong Cai ◽  
Dong Fu
Keyword(s):  
Aqueous Solution ◽  
Mass Fraction ◽  
Absorption Rate ◽  
Normal Pressure ◽  
Influence Of Temperature ◽  
Kinetics Of

The absorption rates of CO2 in diethanolamine (DEA) promoted N-methyldiethanolamine (MDEA) aqueous solution were measured at normal pressure with temperatures ranging from 303.15-323.15K. The influence of temperature and the mass fraction of DEA on the absorption rate of CO2 was illustrated.

Experiments on the Kinetics and Activation Mechanism of CO2 Loaded MEA-MDEA Aqueous Solutions

2012 ◽  
Vol 610-613 ◽  
pp. 1213-1217 ◽  
Author(s):  
Dong Fu ◽  
Lin Wei ◽  
Xiang Fei
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Mass Fraction ◽  
Absorption Rate ◽  
Normal Pressure ◽  
Activation Mechanism

The solubility and absorption rate of CO2 in monoethanolamine (MEA) promoted N-methyldiethanolamine (MDEA) aqueous solution were measured at normal pressure with temperatures ranging from 303.15-323.15K. The temperature and the mass fraction dependences of the solubility of CO2 and CO2 loading were determined. The influence of the mass fraction of MEA on the absorption rate of CO2 was illustrated.

Experiments on the Kinetics and Solubility of CO2 in AMP-PZ Aqueous Solutions

2013 ◽  
Vol 411-414 ◽  
pp. 2989-2992
Author(s):  
Dong Fu ◽  
Hong Mei Wang ◽  
Lei Xia Du
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Mass Fraction ◽  
Absorption Rate ◽  
Normal Pressure

The solubility and saturated loading of CO2in piperazine (PZ) promoted 2-amino-2-methyl-1-propanol (AMP) aqueous solution were measured at normal pressure with temperatures ranging from 293.15K to 323.15K. The temperature and the mass fraction dependences of the solubility and saturated loading of CO2were determined. The influence of the mass fraction of PZ on the absorption rate of CO2was illustrated.

Investigation of the Solubility and Absorption Rate of CO2 in DEA Promoted K2CO3 Aqueous Solution

2013 ◽  
Vol 668 ◽  
pp. 174-177
Author(s):  
Dong Fu ◽  
Xiang Cheng Wu ◽  
Hui Min Hao
Keyword(s):  
Aqueous Solution ◽  
Potassium Carbonate ◽  
Mass Fraction ◽  
Absorption Rate ◽  
Experimental Results ◽  
Mass Fractions

The solubility and absorption rate of CO2 in diethanolamine (DEA) promoted potassium carbonate (K2CO3 ) aqueous solution were measured at 1 atm, with temperatures ranging from 328.15 to 343.15K. The influence of the mass fractions of DEA (w)on the solubility, CO2 loading and absorption rate was illustrated. The experimental results show that at a given mass fraction of K2CO3, the solubility and CO2 loading respectively increases and decreases with increasing w. When w is less than 0.02, the absorption rate increases very rapidly with increasing w, however, exceeding this value, the absorption rate increases slowly.

scholarly journals Corrosion Study of Carbon Steel in Carbonated BUMEA-2EE Nonaqueous Solution

2021 ◽  
Vol 2076 (1) ◽  
pp. 012057
Author(s):  
Fang Liu ◽  
Xiaoqian Du ◽  
Lemeng Wang ◽  
Dong Fu
Keyword(s):  
Aqueous Solution ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Mass Fraction ◽  
Nonaqueous Solution ◽  
Influence Of Temperature ◽  
Corrosion Study ◽  
Equipment Corrosion ◽  
Polarization Behaviour

Abstract Different effort has been attempted to reduce the equipment corrosion of CO2 absorption using chemical solvents. In this paper, the corrosion of carbon steel in carbonated 2-(butylamino)ethanol (BUMEA)-2-ethoxyethanol (2EE) non-aqueous solution was studied by using a CHI602E electrochemical analyser. The polarization behaviour and corrosion rate of carbon steel in non-aqueous blends of BUMEA-2EE were investigated. The influence of temperature, the mass fraction of BUMEA (wBUMEA) and CO2 loading (α) on the corrosion rate were clarified.

scholarly journals Temperature and pH effects on the kinetics of 2-aminophenol auto-oxidation in aqueous solution

2003 ◽  
Vol 1 (3) ◽  
pp. 233-241 ◽  
Author(s):  
Dumitru Oancea ◽  
Mihaela Puiu
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Aqueous Solution ◽  
Ph Effects ◽  
Influence Of Temperature ◽  
First Order ◽  
Incremental Methods ◽  
First Order Kinetics ◽  
Ph Range ◽  
Kinetics Of

AbstractThe kinetics of the auto-oxidation of 2-aminophenol (OAP) to 2-amino-phenoxazin-3-one (APX) was followed in air-saturated aqueous solutions and the influence of temperature and pH on the auto-oxidation rate was studied. The kinetic analysis was based on a spectrophotometric method following the increase of the absorbance of APX. The process follows first order kinetics according to the rate law—d[OAP]/dt=k′[OAP]. The experimental data, within the pH range 4–9.85, were analyzed using both differential and incremental methods. The temperature variation of the overall rate constant was studied at pH=9.85 within the range 25–50°C and the corresponding activation energy was evaluated.

scholarly journals Fast and efficient CO2 absorption in non-aqueous tertiary amines promoted by ethylene glycol

2021 ◽  
Author(s):  
Meisi Chen ◽  
Feng Zhang ◽  
Xiemin Liu ◽  
Xingbang Hu ◽  
Youting Wu
Keyword(s):  
Mass Fraction ◽  
Absorption Rate ◽  
Normal Pressure ◽  
Co2 Absorption ◽  
Tertiary Amines ◽  
Absorption Performance ◽  
Regeneration Cycle ◽  
Higher Temperature ◽  
Regenerative Energy ◽  
C Nmr

With the catalytic induction of EG, anhydrous DMEA shows CO absorption performance via chemical binding and physical storage under normal pressure. Among the absorbents, pure DMEA can hardly absorb CO directly but when the zwitterionic alkylcarbonates are formed between CO and DMEA-EG which can be characterized by C NMR and FTIR, the absorption rate of CO will be improved at this time. An increasing the CO loading as the mass fraction of EG in DMEA-EG, 90wt.% EG captures up to 0.72 mol/mol. The amount of chemically bound and physically stored is directly dependent on temperature, within the range of 293 to 323K, an absorption-regeneration cycle can be formed in a closed vessel because of the zwitterion DMEA-EG-CO is unstable at the higher temperature. In other words, DMEA-EG-CO can be easily regenerated upon appropriate depressurization or heating, corresponding thermodynamic calculations prove that the regenerative energy of DMEA-EG-CO is 25.49kJ/mol.

Kinetics and mechanism of the reaction of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione

1990 ◽  
Vol 55 (8) ◽  
pp. 1984-1990 ◽  
Author(s):  
José M. Hernando ◽  
Olimpio Montero ◽  
Carlos Blanco
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Activation Parameters ◽  
Enol Form ◽  
Kinetics And Mechanism ◽  
Kinetic Constants ◽  
Steric Factors ◽  
Kinetics Of ◽  
Mechanism Of The Reaction

The kinetics of the reactions of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione to form the corresponding monocomplexes have been studied spectrophotometrically in the range 5 °C to 16 °C at I 25 mol l-1 in aqueous solution. In the proposed mechanism for the two complexes, the enol form reacts with the metal ion by parallel acid-independent and inverse-acid paths. The kinetic constants for both pathways have been calculated at five temperatures. Activation parameters have also been calculated. The results are consistent with an associative activation for Fe(H2O)63+ and dissociative activation for Fe(H2O)5(OH)2+. The differences in the results for the complexes of heptanediones studied are interpreted in terms of steric factors.

Temperature Effect on the Two-Dimensional Phase Transition Kinetics of Adenine Adsorbed at the Hg Electrode/Aqueous Solution Interface

2003 ◽  
Vol 68 (8) ◽  
pp. 1407-1419 ◽  
Author(s):  
Claudio Fontanesi ◽  
Roberto Andreoli ◽  
Luca Benedetti ◽  
Roberto Giovanardi ◽  
Paolo Ferrarini
Keyword(s):  
Phase Transition ◽  
Aqueous Solution ◽  
Phase Change ◽  
Temperature Effect ◽  
Transition Rate ◽  
Effect Of Temperature ◽  
Two Dimensional ◽  
Solution Interface ◽  
Phase Transition Kinetics ◽  
Kinetics Of

The kinetics of the liquid-like → solid-like 2D phase transition of adenine adsorbed at the Hg/aqueous solution interface is studied. Attention is focused on the effect of temperature on the rate of phase change; an increase in temperature is found to cause a decrease of transition rate.

Sign in / Sign up

Export Citation Format

Share Document