Change search
Link to record
Permanent link

Direct link
BETA
Chen, Yifeng
Publications (6 of 6) Show all publications
Chen, Y., Sun, Y., Yang, Z., Lu, X. & Ji, X. (2020). CO2 separation using a hybrid choline-2-pyrrolidine-carboxylic acid/polyethylene glycol/water absorbent. Applied Energy, 257, Article ID 113962.
Open this publication in new window or tab >>CO2 separation using a hybrid choline-2-pyrrolidine-carboxylic acid/polyethylene glycol/water absorbent
Show others...
2020 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 257, article id 113962Article in journal (Refereed) Published
Abstract [en]

Developing novel hybrid absorbents is essential for CO2 separation. In this study, the density and viscosity of a hybrid absorbent (choline-2-pyrrolidine-carboxylic acid/polyethylene glycol/water ([Cho][Pro]/PEG200/H2O)) were measured experimentally, and its CO2 solubility was also determined. The excess mole volume and excess Gibbs energy of activation of the hybrid absorbent were further estimated to understand the molecular structure and interactions between [Cho][Pro]/PEG200 and H2O. The CO2 solubilities in [Cho][Pro]/PEG200 and [Cho][Pro]/H2O were analyzed and described using the Redlich–Kwong non-random-two-liquid (RK-NRTL) model. Furthermore, the CO2 solubility in the hybrid absorbent was predicted using the RK-NRTL model and was compared with the new experimental results for verification. The effect of H2O on the CO2 absorption performance was further analyzed. The performance and cost of the hybrid absorbent were compared with those of other commercialized CO2 absorbents. In addition, the recyclability of the hybrid absorbent for CO2 separation was studied. The results of this study indicated that the hybrid absorbent could be promising for CO2 separation.

Place, publisher, year, edition, pages
Elsevier, 2020
Keywords
Ionic liquid, Carbon dioxide, Property, Solubility, Modeling
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
urn:nbn:se:ltu:diva-76484 (URN)10.1016/j.apenergy.2019.113962 (DOI)2-s2.0-85073480738 (Scopus ID)
Note

Validerad;2019;Nivå 2;2019-10-23 (johcin)

Available from: 2019-10-23 Created: 2019-10-23 Last updated: 2019-10-29Bibliographically approved
Chen, Y., Ma, C., Ji, X., Yang, Z. & Lu, X. (2020). Thermodynamic study on aqueous polyethylene glycol 200 solution and performance assessment for CO2 separation. Fluid Phase Equilibria, 504, Article ID 112336.
Open this publication in new window or tab >>Thermodynamic study on aqueous polyethylene glycol 200 solution and performance assessment for CO2 separation
Show others...
2020 (English)In: Fluid Phase Equilibria, ISSN 0378-3812, E-ISSN 1879-0224, Vol. 504, article id 112336Article in journal (Refereed) Published
Abstract [en]

To develop polyethylene glycol 200 (PEG200) and aqueous PEG200 solutions (PEG200/H2O) as solvents for CO2 separation, in this study, the available thermo-physical properties of PEG200 and PEG200/H2O measured experimentally were surveyed, evaluated, and correlated with empirical equations. The solubility of CO2 in PEG200 was also surveyed, evaluated and described with the Henry's law with the Poynting correction, while the solubilities of CH4 and N2 in PEG200 were determined experimentally and then described with the Henry's law. The CO2, CH4 and N2 solubilities in PEG200/H2O were measured and described with the Redlich–Kwong Nonrandom-Two-Liquid (RK-NRTL) model. In addition, the performances of PEG200, PEG200/H2O and other commercialized physical solvents for CO2 separation were discussed based on the properties, and the biogas upgrading was chosen as the example to quantitatively evaluate the performances of PEG200 and PEG200/H2O with process simulation and compared with the high pressure water scrubbing (HPWS). It shows that the total energy usage and the amount of recirculated solvent for biogas upgrading can decrease by 9.1% and 26.5%, respectively, when H2O is replaced by PEG200 completely.

Place, publisher, year, edition, pages
Elsevier, 2020
Keywords
CO2, PEG200, Solubility, Modelling, Process simulation
National Category
Engineering and Technology Energy Engineering
Research subject
Energy Engineering
Identifiers
urn:nbn:se:ltu:diva-76327 (URN)10.1016/j.fluid.2019.112336 (DOI)000500036600007 ()2-s2.0-85072921202 (Scopus ID)
Note

Validerad;2019;Nivå 2;2019-10-21 (johcin)

Available from: 2019-10-09 Created: 2019-10-09 Last updated: 2019-12-20Bibliographically approved
Liu, S., Li, H., Chen, Y., Yang, Z., Wang, H., Ji, X. & Lu, X. (2019). Improved CO2 separation performance of aqueous choline-glycine solution by partially replacing water with polyethylene glycol. Fluid Phase Equilibria, 495, 12-20
Open this publication in new window or tab >>Improved CO2 separation performance of aqueous choline-glycine solution by partially replacing water with polyethylene glycol
Show others...
2019 (English)In: Fluid Phase Equilibria, ISSN 0378-3812, E-ISSN 1879-0224, Vol. 495, p. 12-20Article in journal (Refereed) Published
Abstract [en]

Aqueous choline-glycine ([Cho][Gly]) solution is a potential candidate for CO2separation owing to its excellent absorption performance and biodegradability. Moreover, the aqueous solution is easy to volatilize at high temperatures. In this work, H2O was partially replaced with polyethylene glycol (PEG200) and the effect of PEG200 on the CO2 separation performance in [Cho][Gly])/H2O was investigated. The viscosity of [Cho][Gly]/H2O/PEG200 and CO2 solubility in the solution were determined experimentally in the temperature range 308.15–338.15 K at pressures ≤6.5 bar. Further, the measured CO2 solubility was fitted with the reaction equilibrium thermodynamic model and the CO2 desorption enthalpy was estimated. The regeneration performance of [Cho][Gly]/H2O/PEG200 was also evaluated. The results revealed that [Cho][Gly]/H2O/PEG200 has a low CO2desorption enthalpy and high regeneration efficiency. Particularly, [Cho][Gly]/H2O/PEG200 with 30 wt% PEG200 has a high regeneration efficiency of 95%. Owing to its physical-chemical properties and CO2 separation performance, [Cho][Gly]/H2O/PEG200 shows great potential as an absorbent for CO2 separation.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Ionic liquids, Carbon dioxide, Solubility, Reaction equilibrium thermodynamic model, Regeneration
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
urn:nbn:se:ltu:diva-73942 (URN)10.1016/j.fluid.2019.05.006 (DOI)000473379400002 ()2-s2.0-85065612653 (Scopus ID)
Note

Validerad;2019;Nivå 2;2019-06-11 (oliekm)

Available from: 2019-05-15 Created: 2019-05-15 Last updated: 2019-08-15Bibliographically approved
Chen, Y., Ji, X., Yang, Z. & Lu, X. (2019). Novel Solvent for CO2 Capture. Paper presented at 10th International Conference on Applied Energy (ICAE2018)August 22-25, 2018, Hong Kong. Energy Procedia, 158, 5124-5129
Open this publication in new window or tab >>Novel Solvent for CO2 Capture
2019 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 158, p. 5124-5129Article in journal (Refereed) Published
Abstract [en]

To develop novel solvent for CO2 capture, CO2 absorption performance using the aqueous of polyethylene glycol 200 (PEG200) and choline-2-pyrrolidinecarboxylic acid ([Cho][Pro]) was studied and evaluated systematically in this work, in which the critical properties of PEG200 were estimated with group contribution method, and other thermo-physical properties were determined experimentally or taken from literatures directly and then correlated with empirical equations. The CO2 solubility in PEG200 was measured and represented with the Henry’s law and Poynting correction, while the measured CO2 solubility in PEG200/H2O was correlated with RK-NRTL model. [Cho][Pro] was used as the chemical ingredient to enhance the absorption capacity and rate of CO2 in [Cho][Pro]/PEG200/H2O, and the corresponding properties and CO2 solubility were studied. The kinetic parameters, such as enhancement factor (E), reaction rate constant (k), and activation energy (Ea) of CO2 in [Cho][Pro]/PEG200/H2O were estimated from the new experimental data measured in this work and compared with the commercialized aqueous MEA solution. The process simulation and pilot-testing based on [Cho][Pro]/PEG200/H2O will be performed in the future.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Carbon dioxide, Solubility, Property, Kinetics, Process simulation, Pilot-testing
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
urn:nbn:se:ltu:diva-73440 (URN)10.1016/j.egypro.2019.01.022 (DOI)000471031705075 ()
Conference
10th International Conference on Applied Energy (ICAE2018)August 22-25, 2018, Hong Kong
Note

Konferensartikel i tidskrift

Available from: 2019-04-05 Created: 2019-04-05 Last updated: 2019-07-10Bibliographically approved
Ren, J., Li, Z., Chen, Y., Yang, Z. & Lu, X. (2018). Supported ionic liquid sorbents for CO2 capture from simulated flue-gas. Chinese Journal of Chemical Engineering, 26(11), 2377-2384
Open this publication in new window or tab >>Supported ionic liquid sorbents for CO2 capture from simulated flue-gas
Show others...
2018 (English)In: Chinese Journal of Chemical Engineering, ISSN 1004-9541, E-ISSN 2210-321X, Vol. 26, no 11, p. 2377-2384Article in journal (Refereed) Published
Abstract [en]

Supported ionic liquid (IL) sorbents for CO2 capture were prepared by impregnating tetramethylammonium glycinate ([N1111][Gly]) into four types of porous materials in this study. The CO2 adsorption behavior was investigated in a thermogravimetric analyzer (TGA). Among them, poly(methyl methacrylate) (PMMA)-[N1111][Gly] exhibits the best CO2 adsorption properties in terms of adsorption capacity and rate. The CO2 adsorption capacity reaches up to 2.14 mmol·g− 1 sorbent at 35 °C. The fast CO2 adsorption rate of PMMA-[N1111][Gly] allows 60 min of adsorption equilibrium time at 35 °C and much shorter time of 4 min is achieved at 75 °C. Further, Avrami's fractional-order kinetic model was used and fitted well with the experiment data, which shows good consistency between experimental results and theoretical model. In addition, PMMA-[N1111][Gly] remained excellent durability in the continuous adsorption–desorption cycling test. Therefore, this stable PMMA-[N1111][Gly] sorbent has great potential to be used for fast CO2 adsorption from flue-gas.

Place, publisher, year, edition, pages
Chemical Industry Press, 2018
Keywords
CO2 adsorption Amino acid ionic liquid Supported ionic liquid sorbent Adsorption kinetics
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
urn:nbn:se:ltu:diva-70238 (URN)10.1016/j.cjche.2018.04.025 (DOI)000452428700016 ()2-s2.0-85048954100 (Scopus ID)
Note

Validerad;2018;Nivå 2;2018-12-05 (inah)

Available from: 2018-08-07 Created: 2018-08-07 Last updated: 2019-02-27Bibliographically approved
Yuan, S., Yang, Z., Ji, X., Chen, Y., Sun, Y. & Lu, X. (2017). CO2 absorption in mixed aqueous solution of MDEA and cholinium glycinate. Energy & Fuels, 31(7), 7325-7333
Open this publication in new window or tab >>CO2 absorption in mixed aqueous solution of MDEA and cholinium glycinate
Show others...
2017 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 31, no 7, p. 7325-7333Article in journal (Refereed) Published
Abstract [en]

A new mixed solvent system that consists of cholinium glycinate ([Cho][Gly]) and aqueous N-methyldiethanolamine (MDEA) solution was developed in this work to serve as CO2 absorbent. The equilibrium absorption was carried out to investigate the effect of solution composition, pressure and temperature on CO2 absorption performance. The effect of CO2 absorption on the viscosity of the aqueous solutions was studied, and the regeneration efficiency of the aqueous solutions was also investigated. The results showed that the CO2 absorption loading decreased with increasing [Cho][Gly] concentration and temperature, and the absorption loading strongly depended on CO2 partial pressure. The reactivity of MDEA was significantly enhanced with the addition of [Cho][Gly]. The aqueous solution with (10 wt % [Cho][Gly] + 20 wt % MDEA) showed an optimal CO2 absorption and high regeneration efficiency. Furthermore, the CO2 absorption mechanism in the aqueous [Cho][Gly]-MDEA solution was explored by 13C Nuclear Magnetic Resonance (NMR), which indicated that the CO2 absorption in the aqueous [Cho][Gly]-MDEA solution was zwitterion mechanism.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2017
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
urn:nbn:se:ltu:diva-63885 (URN)10.1021/acs.energyfuels.7b00927 (DOI)000406356600072 ()2-s2.0-85025157219 (Scopus ID)
Note

Validerad;2017;Nivå 2;2017-08-10 (rokbeg)

Available from: 2017-06-12 Created: 2017-06-12 Last updated: 2018-07-10Bibliographically approved
Organisations

Search in DiVA

Show all publications