Article
Chemistry, Applied
Janna V. Veselovskaya, Vladimir S. Derevschikov, Anton S. Shalygin, Dmitry A. Yatsenko
Summary: By impregnating porous zirconia aerogels with K2CO3, a series of composite materials were prepared, with the composite sorbent containing 23% K2CO3 demonstrating the highest CO2 absorption capacity. The study suggests that some of the K2CO3 loaded into zirconia mesopores do not actively participate in CO2 absorption and desorption processes.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Environmental
Friday O. Ochedi, John Andresen, Susana Garcia, Mijndert van der Spek
Summary: KOH and K2CO3 aqueous solutions are promising options for CO2 absorption due to their low toxicity, non-volatility, and resistance to degradation. However, their absorption kinetics are slower than primary and secondary amines. This study investigated the oxidative degradation of piperazine (PZ) when blended with KOH or K2CO3. The results showed that KOH enhanced PZ oxidation while K2CO3 inhibited it.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Qingyang Li, Zhenghong Bao, Novruz G. Akhmedov, Benjamin A. Li, Yuhua Duan, Malcolm Xing, Jingxin Wang, Badie Morsi, Bingyun Li
Summary: The study reveals that the addition of amino acids like glycine in potassium carbonate solvents can lead to carbamate formation, and amino acids significantly enhance the absorption rate of CO2. The mixed solvent of potassium carbonate and amino acids may be an ideal choice for CO2 removal.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Wenliang Zhu, Naoki Hoshida, Galih Nurcahyo Pangeran Jati, Yumi Yoshida, Kaoru Adachi, Jiliang Zhu, Manamu Ihara, Elia Marin, Giuseppe Pezzotti
Summary: Percolative composites of polyvinylidene fluoride/potassium carbonate (PKC) have high dielectric constant and electrical conductivity, and can effectively incorporate activated carbon, making it promising for flexible energy storage applications.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Vladimir S. Derevschikov, Janna V. Veselovskaya, Anton S. Shalygin, Dmitry A. Yatsenko, Andrey Z. Sheshkovas, Oleg N. Martyanov
Summary: In this study, the influence of temperature swing adsorption (TSA) cycle conditions on the CO2 sorption properties of a novel aerogel-based K2CO3/ZrO2 sorbent in direct air capture (DAC) process was examined. The results showed that humidity and temperature have a significant impact on the sorption dynamics and sorption capacity of the sorbent.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Faezah Isa, Haslinda Zabiri, Noorlisa Harun, Azmi M. Shariff
Summary: This study investigates the application of promoted potassium carbonate with glycine as a chemical solvent for CO2 removal through dynamic simulation and control. The designed control strategy demonstrates satisfactory response under varying changes in inlet gas flow rate. Furthermore, the use of model predictive controller with state-space model system identification achieves quick disturbance rejection.
Article
Green & Sustainable Science & Technology
Stylianos Pachitsas, Davide Bonalumi
Summary: The research shows that aqueous mixtures of NH3 and K2CO3 can effectively capture CO2 from industrial flue gases, and the ratio of NH3 and K2CO3 in the solvent affects the capture efficiency. Increasing the regeneration pressure can increase the regeneration temperature and reduce the heat duty of the reboiler.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Chemistry, Physical
Thomas Moore, Diego I. Oyarzun, Wenqin Li, Tiras Y. Lin, Maxwell Goldman, Andrew A. Wong, Shaffiq A. Jaffer, Amitava Sarkar, Sarah E. Baker, Eric B. Duoss, Christopher Hahn
Summary: In low-temperature CO2 electrolysis, the optimal single-pass CO2 conversion for ethylene production is typically low, around 5%-10%, but larger optima can be found with very low H2 faradic efficiency. Eliminating carbonate crossover strategies require more energy than downstream gas separation if they increase the cell potential by X0.2 V. However, when considering CAPEX, the break-even voltage increases to -0.4 to 0.8 V for electricity prices ranging from 6c/kWh to 1.5c/kWh. These findings highlight the importance of maintaining near-optimal electrolyzer performance over reducing or eliminating downstream gas separations.
Article
Food Science & Technology
Jie Li, Guolong Yang, Pengcheng Meng, Jingbo Hu, Wei Liu
Summary: Modified lards were prepared through interesterification using glycerol:K2CO3-based deep eutectic solvents. The physicochemical properties of these modified lards were investigated, and it was found that the fatty acid composition at the sn-2 position significantly changed with increasing interesterification degrees (IDs). The modified lards showed changes in their solid fat content curves, slip melting points, thermal properties, and crystallization behaviors compared to the original lard. The interesterified lards with higher IDs (over 50%) were found to be more suitable as shortenings than the original lard.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Qian Zhao, Jianquan Lin, Haotian Huang, Zhuwei Xie, Yimin Xiao
Summary: The selection of a suitable thermochemical material is crucial for sorption thermal energy storage systems. In this study, a K2CO3-based composite was prepared and its sorption characteristics were investigated. The results showed that the composite had a significantly higher sorption rate and heat storage density compared to pure K2CO3, indicating its potential competitiveness in thermal energy storage applications.
Article
Chemistry, Multidisciplinary
Sreekanth Rajagopalachar
Summary: This study focuses on the solubility and catalytic behavior of K2CO3 and Na2CO3 during the synthesis of biodiesel from Calophyllum Inophyllum oil. The results show that Na2CO3 exhibits better heterogeneous catalytic behavior at higher temperatures.
Article
Energy & Fuels
Natalia Mazur, Henk Huinink, Hartmut Fischer, Olaf Adan
Summary: This study investigates the reactions occurring in K2CO3-H2O-CO2 under conditions applicable for domestic thermochemical heat storage. The primary product of the reaction can be K2CO3·1.5H2O, K2CO3·2KHCO3·1.5H2O, or a mixture of both, depending on the reaction conditions. The formation of K2CO3·1.5H2O is preferred above the equilibrium conditions, while the formation of double salt is preferred when hydration reaction is inhibited. A new phase transition line corresponding to the formation of K2CO3·2KHCO3 was identified. The formation of K2CO3·2KHCO3·(1.5H2O) increases the minimum charging temperature, but the energy density and cyclability can be preserved if the double salt is decomposed after each cycle.
Article
Thermodynamics
Lucas Farias Falcchi Correa, Kaj Thomsen, Philip Loldrup Fosbol
Summary: In this study, solid-liquid equilibrium data was obtained for aqueous solutions containing ammonia, ammonium bicarbonate, methyl diethanolamine, and potassium carbonate using a modified Beckmann apparatus. The addition of methyl diethanolamine was found to increase the solubility of ammonium bicarbonate, while a liquid-liquid split was observed when potassium carbonate was added to aqueous methyl diethanolamine. These results provide insights on the limits of solid formation and may have implications for using methyl diethanolamine as a phase demixing solvent for carbon capture.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Chemistry, Analytical
Bashir Abubakar Abdulkadir, John Ojur Dennis, Abbas Abdullahi Adam, Yerima Mudassir Hassan, Nurrul Asyiqin Shamsuri, M. F. Shukur
Summary: In this study, solid polymer electrolytes (SPEs) based on blended polyvinyl alcohol (PVA) and cellulose acetate (CA) incorporated with potassium carbonate (K2CO3) salt were developed. The electrolytes were prepared by incorporating salts into the polymers using solution casting technique. Physicochemical and electrochemical characterizations were conducted to evaluate the performance of the developed electrolytes. It was found that the optimized sample showed high conductivity and potential window, making it a suitable electrolyte material for energy storage devices.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Shan-Shan Li, Li-Li Zhao, Min Pan, Na Feng, Jin-Bao Peng, Ai-Jun Ma
Summary: A potassium carbonate promoted tandem oxy-Michael addition/cyclization reaction has been developed for the synthesis of diverse substituted naphthopyrans. The use of readily available and inexpensive potassium carbonate as a promoter offers an efficient and sustainable approach to prepare 2-substituted naphthopyrans.
Article
Chemistry, Multidisciplinary
Yue Wu, Jessica Vovers, Hiep Thuan Lu, Wen Li, Geoffrey W. Stevens, Kathryn A. Mumford
Summary: In this study, the extraction process of morphine using Cyanex (R) 923 as an extractant was investigated. A reliable mass transfer correlation was established through regression, which can predict the extraction efficiency and morphine concentration.
SOLVENT EXTRACTION AND ION EXCHANGE
(2023)
Article
Chemistry, Physical
Yucheng Liu, Guobiao Li, Dong Wang, Zhenchen Zhong, Kaibo Hu, Chuanqi Zhang, Guoping Hu, Xuewei Li, Yinhua Wan
Summary: In this study, a high value-added near-infrared glass-ceramic photocatalyst was synthesized by replacing pure fluoride with fluorine-containing waste. The photocatalyst exhibited efficient photocatalytic degradation and stability, and it was also regenerable. This study provides references for the high value-added utilization of fluorine-containing waste.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Chemical
Guoping Hu, Yalou Guo, Qinghu Zhao, Gongkui Xiao, Kevin Gang Li, Eric F. May
Summary: This study investigates the effects of including a heavy product reflux/purge step in PSA cycles on the separation of CH4/N2 using ionic liquidic zeolites as adsorbents. The results show that adding a heavy purge step can significantly increase the methane concentration in the gas mixture, but it also leads to the loss of methane into the light product stream.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Wen Li, Hiep Thuan Lu, Monika S. Doblin, Antony Bacic, Geoffrey W. Stevens, Kathryn A. Mumford
Summary: Cannabinoids have gained worldwide attention for their medicinal and psychoactive properties, but their efficient recovery from plant material is challenging due to the presence of complex mixtures. This study selected 4-tert-amylphenol (4-TAP) as a mimic for cannabinoids and used the COSMO model to predict their properties and guide the liquid-liquid extraction process. The developed three-stage LLE process showed promising results and the COSMO model proved useful in the design of cannabinoid extraction processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Yaobin Lai, Jian Li, Sitian Zhu, Kejia Liu, Qiwen Xia, Mengling Huang, Guoping Hu, Hui Zhang, Tao Qi
Summary: A novel green method for the recovery of rare earths (REs), fluorine (F), and lithium (Li) from rare earth molten salt electrolytic slag (REMSES) was proposed and demonstrated by mineral phase reconstruction combined with vacuum distillation. The optimized conditions for the roasting process were found to be a temperature of 600 degrees C, LiOH center dot H2O dosage coefficient of 1.1 times, and roasting time of 4 h. Vacuum distillation was shown to effectively remove F, with a removal rate of 99.98% and a recovery rate of LiF of 98.96%.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Masood S. Alivand, Rebecca V. McQuillan, Arash Momeni, Ali Zavabeti, Geoffrey W. Stevens, Kathryn A. Mumford
Summary: Direct air capture (DAC) is a technology that removes carbon dioxide (CO2) from the atmosphere to control its concentration. However, the energy-intensive CO2 absorption-desorption processes limit its deployment. This study presents a one-step synthesis method to prepare monodispersed carbon nanospheres (MCSs) that can be functionalized with strong acid sites to enhance CO2 desorption. These acidic MCSs demonstrated superior catalytic efficiency and can be effectively used in amino acid solutions to accelerate CO2 desorption in the DAC process.
Article
Materials Science, Multidisciplinary
Jing-Chong Liu, Lin-Lin Ma, Shuai Li, Lan-Lan Hou, Xin-Ran Qi, Yong-Qiang Wen, Guo-Ping Hu, Nue Wang, Yong Zhao, Xiao-Xian Zhao
Summary: In this work, a three-dimensional anode was fabricated using conductive hollow carbon-based nanotubes interpenetrated MXene architecture. The introduction of copper into the carbon matrix leads to an improvement of lithium storage and the unique structure of the fabricated electrode provides a cross-network for fast electron diffusion. The optimized electrode exhibits a high initial capacity and maintains capacity after multiple cycles, showing the potential for developing high-performance electrochemical energy storage devices.
Letter
Multidisciplinary Sciences
Masood S. Alivand, Geoffrey W. Stevens, Kathryn A. Mumford
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Umair H. Bhatti, Masood S. Alivand, Francesco Barzagli, Meher Geetika Sanku, Jorge Gascon, Kathryn A. Mumford
Summary: Catalyst-facilitated amine regeneration provides an energy-efficient and economically feasible CO2 capture process. Glucose-derived carbon sphere nanocatalysts with isethionic acid functionalization were developed to optimize the CO2 desorption rate of CO2-loaded monoethanolamine solutions. The synthesized catalysts accelerated the CO2 desorption rate by up to 108% and reduced the heat duty by approximately 10.8% compared to traditional uncatalyzed regeneration. These catalysts can be separated easily, stable in cyclic uses, and suitable for industrial-scale applications. Regenerating solvents with catalysts at 86°C allows the use of low-grade industrial waste heat, enabling efficient CO2 capture facilities to be installed at various industrial sites for achieving net zero emissions by 2050.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Linlin Ye, Nitu Syed, Dingqi Wang, Billy J. Murdoch, Karma Zuraqi, Masood S. Alivand, Penny Xiao, Ranjeet Singh, Lianhai Zu, Kathryn A. Mumford, Amanda V. Ellis, Chris F. McConville, Gang Kevin Li, Ali Zavabeti
Summary: Reducing CO2 emissions is crucial for the survival of the planet, and the demand for innovative technologies to capture and reduce CO2 is growing significantly. Researchers have discovered a high-yield, safe, and on-demand approach based on Li-containing liquid metal for reducing CO2 to solid materials at low temperatures and atmospheric pressure. This process utilizes Li metal to drive the dissociation of CO2 into carbon and oxygen, resulting in the formation of solid carbonaceous materials that can be utilized as a supercapacitor.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Jing-Chong Liu, Lin-Lin Ma, Shuai Li, Lan-Lan Hou, Xin-Ran Qi, Yong-Qiang Wen, Guo-Ping Hu, Nu Wang, Yong Zhao, Xiao-Xian Zhao
Summary: In this work, a three-dimensional anode with improved electron and ion transport ability and alleviated expansion during charging/discharging processes was fabricated using conductive hollow carbon-based nanotubes and MXene architecture. The electrode exhibited a high initial capacity and excellent cycling stability, suggesting its potential for high-performance and durable electrochemical energy storage devices.
Article
Green & Sustainable Science & Technology
Husain E. Ashkanani, Rui Wang, Wei Shi, Nicholas S. Siefert, Robert L. Thompson, Kathryn H. Smith, Janice A. Steckel, Isaac K. Gamwo, David Hopkinson, Kevin Resnik, Badie I. Morsi
Summary: A techno-economic analysis was performed to analyze the CO2 capture process in a pre-combustion power plant. The study found that specific solvents and operating conditions can significantly affect the cost of CO2 capture.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Article
Engineering, Environmental
Kaibo Hu, Chuanqi Zhang, Guobiao Li, Yucheng Liu, Dong Wang, Ke Li, Guoping Hu, Liuyimei Yang, Yinhua Wan
Summary: This study proposed an innovative method to fabricate Ag-doped antibacterial ceramics with low Ag content, high dispersion, and high exposure. The fabricated ceramics exhibited efficient degradation and antibacterial properties under visible light irradiation.
JOURNAL OF HAZARDOUS MATERIALS
(2024)