INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Zhilin Ma,Yongda Cao,Xiujun Peng,Qiulin Yang,Chao Wang,Chang-An Zhou,Lei Song,Kui Ma,Hairong Yue
The chemical absorption method using MEA has been one of the most effective CO2 capture technologies, but the problems of low process efficiency and poor economics limit its application. In this work, the rapid phase change absorbent composed of alcohol ether solvent and potassium amino acid salt (AaK) solution was investigated, and the effects of different AaKs and ethers on the phase change behavior, phase separation mechanism, and CO2 absorption performance of the absorbent were analyzed. The results showed that when the carbon chain of the linear AaK was longer, the solubility in water was larger, and the lower liquid phase (LP) volume, phase separation time, AaK enrichment in the LP, and CO2 molar loading were larger. When the alkyl group of the branched-chain AaK was larger, the solubility in water was smaller, and the gas–liquid mass transfer, enrichment effect, and absorption rate were smaller. When the ether bonds of ether solvent were greater, the solubility of organic salts and competition for water were stronger; thus, the LP volume was smaller. Moreover, the absorption rate and CO2 loading of AaK systems were affected by the spatial structure effect of amino and carboxyl groups and the viscosity effect of solvent before absorption.
研究领域:
化学工程
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环境科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
·
IF 10.652
Yiyi Li,Xuelei Duan,Weiguo Song,Linge Ma,Jinder Jow
The reaction mechanisms of potassium glycine (KG)–CO 2 absorption, thermal desorption and mineralization desorption with CaO were studied based on the contents of carbamate, bicarbonate/carbonate, and KG/protonated KG analyzed by 13 C-quantitative nuclear magnetic resonance ( 13 C qNMR). KG as the absorbent shows the CO 2 absorption efficiency up to 76% which has 57% due to the bicarbonate/carbonate formation and 43% due to the carbamate formation. Mineralization has a higher CO 2 desorption efficiency of 59% than that of thermal desorption (47%), and the results also indicate that carbamate is less stable under mineralization than under heat although both processes show the similar profiles as a function of pH value for carbamate and bicarbonate/carbonate. A new mechanism has been proposed to explain carbamate increasing with significantly decreasing bicarbonate/carbonate at the early stage of mineralization desorption while the other mechanisms reported in literatures have also been confirmed in this study.
研究领域:
化学工程
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2018
·
IF 2.631
Hui Li,Hui Guo,Yangyang Bian,Yue Zhao,Shufeng Shen
A mixture system of water-lean amino acid salts (AAS) using ethylene glycol (EG) as a solvent has potential use for CO 2 capture to reduce energy consumption. In this work, physicochemical properties such as density, viscosity and N 2 O solubility of potassium prolinate (ProK) or potassium lysinate (LysK) + water + EG solutions were measured over the temperature range from (303.15 to 353.15) K and molality range from (0.481 to 4.331) mol·kg −1 . Partially CO 2 loaded solutions were also investigated. Densities and viscosities of solutions increase with the increasing molality of AAS and CO 2 , but decrease with the increasing temperature. The use of EG in the aqueous AAS systems replacing water can substantially increase the N 2 O solubility. The Henry’s constants of N 2 O for water-lean AAS solutions were calculated and compared with those for aqueous AAS solutions. These experimental data of properties were correlated using empirical correlations as a function of temperature, molality of AAS and/or CO 2 . The experimental results and the predictions from the models matched well each other for both ProK-based and LysK-based water lean systems, with AAD within 0.12% for density, 2.36% for viscosity and 2.0% for N 2 O solubility respectively.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2016
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IF 1.835
Yangyang Bian,Shufeng Shen,Yue Zhao,Ya-nan Yang
Aqueous amino acid salt (AAS) solutions could be attractive absorbents for CO2 removal from flue gases. Density, viscosity, and solubility of N2O in aqueous potassium salts of lysine, histidine, and arginine were measured over the temperature range from (293 to 353) K and molality concentration range from (0.26 to 3.6) mol·kg–1. Experimental results were correlated well with empirical correlations. The ion specific parameters (hAA–), based on the Weisenberger and Schumpe model, were fitted using the solubility data of N2O in the aforementioned AAS systems, valid up to 328 K. The models using temperature dependence of hAA– predict well within 2.5% AAD. The physical solubility of CO2 in the aqueous AAS solutions was also estimated.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Zhixuan Ma,Jing Wang,Shufeng Shen
Water-lean phase change amino acid salt (AAS) has provided a promising solution to energy-efficient CO 2 capture. In this work, novel phase behaviors (liquid–liquid-solid and liquid–liquid) of potassium prolinate (ProK)-2-butoxyethanol (EGBE)-water system (P-E-H) were investigated to improve the CO 2 capture performance. Distribution of phase-forming compositions and CO 2 absorbed among the phases, regeneration efficiency of CO 2 -rich solutions and cyclic capacity were discussed in details, varying the ProK concentration and the mass ratio of EGBE to water (E to H). Phase splitting points were observed to be close to the saturated state under the absorption conditions. For liquid–liquid-solid systems, with decreasing the mass ratio of E to H, volume fraction of the solid phase and the captured CO 2 in ProH + –HCO 3 − species decreases. Desorption conditions were optimized for the CO 2 -rich slurry to form a homogenous liquid after blending with top liquid phase (MWTP) for absorbent reuse, where about 1.0–1.5 times higher desorption efficiency and cyclic capacity in comparison with aqueous 30 mass% MEA. Stability of capture performance and system compositions during eight runs of continuous absorption-phase separation-slurry desorption indicates the 40P-35E-25H absorbent excellent recyclability.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
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2021
·
IF 4.089
Shuang He,Yu-Yang Gao,Ze-Yong Zhao,Sheng-Chao Huang,Zi-Xun Chen,Cong Deng,Yu-Zhong Wang
Phytic acid and amino acid belonging to the biomass material have a wide range of sources in nature. In this work, three kinds of basic amino acids, which are arginine, lysine, and histidine, were used to prepare different bio-based phytic acid–basic amino acid salts (PaArg, PaLys, and PaHis) via a salt-forming reaction. After the incorporation of PaArg, PaLys, and PaHis into polypropylene (PP), PaArg showed a higher efficiency than PaLys and PaHis in endowing PP with flame retardancy. At 22 wt % PaArg, the limiting oxygen index (LOI) value of functional PP was 26.0%, and its UL-94 rating reached V-0 in the vertical burning test. In the fire hazard test, PaLys showed a higher efficiency than PaArg and PaHis in reducing the fire hazard of PP during burning. The peak value of the heat release rate for PP containing 25 wt % PaLys was decreased by 70.7% compared with that of PP, and its fire growth rate was reduced by 86.9%. Analysis on the fire-safety mechanism revealed that the high char-forming rate and the quality of the residue dominated the superior flame-retardant efficiency of PaArg in UL-94 and LOI tests; high strength of the formed char layer, diluting effect of nonflammable gases, and incomplete combustion action led to the superior efficiency of PaLys in decreasing the fire hazard of PP. This work confirms that fully bio-based phytic acid–basic amino acid salt based on the accurate molecular design may endow PP with fire safety under different burning scenes.
研究领域:
材料科学
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化学工程
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燃烧学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2020
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IF 2.888
Hui Li,Hui Guo,Shufeng Shen
Water-lean amino acid salt (AAS) solutions have attracted special attentions for energy-efficient CO 2 absorbents. In this work, 2-methoxyethanol was proposed as a novel anti-solvent due to its excellent properties such as low volatility, low specific heat capacity and low viscosity. Density and viscosity were measured at atmospheric pressure for water-lean blends of potassium sarcosinate (SarK) or potassium L -prolinate (ProK)/water/2-methoxyethanol over the temperature range from (293 to 353) K and the AAS molality up to 4.914 mol·kg −1 . Partially CO 2 loaded solutions were also investigated. Equilibrium solubility of CO 2 in AAS/water/2-methoxyethanol solutions was measured in a stirred equilibrium cell at temperatures of (313, 333 and 373) K and CO 2 partial pressures up to 190 kPa. These property data were correlated using empirical correlations as a function of AAS molality, CO 2 molality and/or temperature. The predicted values of density and viscosity matched well with the measured data, with AADs within 0.31% for density and 3.76% for viscosity. The solubility data of CO 2 were fairly fitted with a proposed Soft model.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
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2015
·Vol. 6
·期 3
·2252-2258
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IF 3.84
Yun Qin,Jianfei Lv,Xin Fu,Ruili Guo,Xueqin Li,Jianshu Zhang,Zhong Wei
Three types of amino acid salts (sodium lysine, sodium arginine, sodium histidine) were introduced into SPEEK polymer matrix to fabricate a series of SPEEK/amino acid salt membranes for CO2 separation. The membranes could efficiently separate CO2 from a CO2/CH4 mixture due to the simultaneous improvement of CO2 permeability and separation performance. Firstly, the amino acid salt contained a larger number of amino groups (–NH2), which could reversibly react with CO2, improving the CO2 molecules transfer performance. Secondly, the ether oxygen structure (–O–) in the polymer chain and the carboxyl groups (–COO−) in the amino acid salt had an excellent affinity for CO2, enhancing the solubility selectivity. Thirdly, the introduction of amino acid salt increased the water uptake, and water was favored over CO2 dissolution; this was also good for the increase of solubility selectivity. Among the three types of amino acid salts, the membrane doped with 20 wt% sodium lysine (SPEEK/LLS-20) showed the highest CO2 permeability of 295.6 barrer and CO2/CH4 selectivity of 71.8 at 2 bar and room temperature, surpassing the 2008 Robeson upper bound line.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2019
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IF 5.107
Yifu Li,Li'ao Wang,Zhongchao Tan,Zhien Zhang,Xinyue Hu
Absorption and desorption of CO 2 using K 2 CO 3 solutions promoted by three amino acid salts (AASs), potassium glycinate (PG), potassium lysinate (PL) and potassium L-argininate (PA), were evaluated using 40% CO 2 at 40 °C and with pure N 2 at 80 °C, respectively. The addition of all 3 AASs clearly enhanced both absorption and desorption of CO 2 compared to single K 2 CO 3 solution. PA + K 2 CO 3 solution showed the highest CO 2 cyclic capacity of 0.678 mol CO 2 /mol absorbent, while the highest CO 2 absorption and desorption rates of 39.8 and 17.6 mol CO 2 L −1 s −1 were achieved by PG + K 2 CO 3 solution. Finally, simulated biogas containing 40% of CO 2 and 60% of CH 4 was used as test gas in a hollow fiber membrane contactor. PG and PA promoters presented higher CO 2 absorption flux and removal efficiency than PL promoters in K 2 CO 3 solution within low Gas/Liquid ratio region. Stable CO 2 removal performances for all three promoters were observed at elevated temperature and pressure for 60 min operation.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2020
·
IF 7.632
Hui Li,Hui Guo,Shufeng Shen
Solvent regeneration for the conventional aqueous amine-based CO2 capture is very energy intensive. Development of phase-changing absorbents is an attractive solution for low energy consumption. In this work, a novel water-lean amino acid salt-based biphasic absorbent was proposed to improve CO2 capture performance and energy efficiency. Potassium prolinate (ProK) and potassium sarcosinate (SarK) with a secondary amino group were used as active components, and 2-alkoxyethanols with low volatility, low specific heat, and low viscosity were used as physical antisolvents and triggered the formation of solid phase during CO2 absorption. CO2 absorption and desorption characteristics in these systems and continuous capture cycles were investigated under ambient pressure. Relative regeneration energy consumption for solvent regeneration was also evaluated in comparison with the benchmark aqueous MEA. Phase change behavior and partition of CO2 absorbed in liquid and solid phases were characterized, and the product species in CO2-rich solid phase were identified by 13C NMR and XRD. Results demonstrated that using weak polar solvents, such as 2-methoxyethanol (EGME) and 2-ethoxyethanol (EGEE), can be favorable for the formation of solid precipitates in these systems investigated. Solid slurry with CO2 loading of 2.5–3.5 mol kg–1 can captured about 50–80% of the absorbed CO2. Ionic products such as bicarbonate and protonated amino acid salt were proved to be the main compositions in the solid precipitate. In comparison with aqueous 5.0 M MEA, the 3.0 M ProK/EGME system showed comparable cyclic capacity (about 0.80 mol kg–1) and a little higher desorption efficiency. Surprisingly, about 40–50% reduction of regeneration energy indicates that water-lean phase change ProK/EGME absorbent has a great potential for advanced CO2 capture technology.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
Chemical Engineering and Processing-Process Intensification
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2022
·
IF 4.264
Yuqi Zhang,Chunying Zhu,Chunyan Chu,Taotao Fu,Youguang Ma
Capture and storage of CO 2 are important to restrain the greenhouse effect. The amino acid salt solution as a new type of CO 2 absorbent shows good application potential. Besides, microchannel has a unique enhancement to mass transfer, which is conducive to promote CO 2 capture. The absorption performance of CO 2 into aqueous solutions of sodium salts of l -threonine, l -valine, l -alanine and glycine in the microchannel was investigated. It was found that the CO 2 absorption rate of four sodium amino acid aqueous solutions under the same condition follows in the order: ñ (sodium glycinate) > ñ (sodium l -alaninate) > ñ (sodium l -valinate) > ñ (sodium l -threoninate). The sodium glycinate aqueous solution has maximum CO 2 absorption ability, thus the mass transfer and capture of CO 2 absorbed into the sodium glycinate aqueous solution were studied systematically. The effects of operating conditions including gas flow rate, liquid flow rate, and sodium glycinate concentration on the specific surface area, overall volumetric mass transfer coefficient, overall mass transfer coefficient and absorption fraction of CO 2 were explored. Furthermore, a new correlation was proposed to predict the volumetric mass transfer coefficient.
研究领域:
环境科学
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化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Chao Deng,Feixiang Song,Zhirong Chen,Wanhui Wu,Xiangfei Zheng,Rongxian Ou,Lichao Sun,Xiaolong Hao,Tao Liu,Qingwen Wang
The inherent flammability of wood restricts its use as a fire-resistant construction material. To overcome this challenge, the development of environmentally friendly, bio-based flame-retardant wood coatings offers a promising solution. In this study, phytic acid was reacted with three kinds of amino acids to synthesize phytic acid-amino acid salt curing agents (APA, LPA, and HPA), which were subsequently incorporated into a melamine-urea-formaldehyde resin to produce transparent, intumescent flame-retardant wood coatings (designated AMP, LMP, and HMP). Experimental results indicate that the AMP coating exhibits superior water resistance and mechanical performance compared to HMP and LMP. Moreover, when the curing agents’ ratio exceeded 10%, the limiting oxygen index (LOI) surpassed 36%, and the UL-94 rating reached V-0. Cone calorimeter tests revealed that the time to ignition (TTI) for wood coated with AMP-4 was 189 seconds, a 63-fold increase relative to untreated wood. Furthermore, the total heat release (THR), peak smoke release rate (pSPR), and total smoke production (TSP) of AMP-4 coated wood were respectively reduced by 50.6%, 61.9%, and 38.3%, demonstrating exceptional flame-retardant performance. The proposed mechanism suggests that the flame-retardant coatings decomposes at elevated temperatures, releasing non-combustible gases and catalyzing the dehydration of carbohydrates, forming an expanded char layer that provides both thermal and oxygen barriers. The prepared wood coating effectively inhibits combustion in both condensed and gas phases. This study provides an environmentally friendly and viable approach for the practical application of bio-based flame-retardant wood coatings.
研究领域:
材料科学
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高分子化学
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阻燃技术
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生物质材料
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涂料工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）