Article
Engineering, Chemical
Caiyun Tian, Aisheng Huang
Summary: A catalytic membrane reactor has been developed to reduce the impact of by-product water on methanol production through CO2 hydrogenation. By employing a water-selective LTA membrane to separate the by-product water from the reactor, the thermodynamic restriction is overcome, resulting in higher CO2 conversion and methanol selectivity.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Wenbin Jiang, Hongyi Loh, Beverly Qian Ling Low, Houjuan Zhu, Jingxiang Low, Jerry Zhi Xiong Heng, Karen Yuanting Tang, Zibiao Li, Xian Jun Loh, Enyi Ye, Yujie Xiong
Summary: This article reviews the progress in oxygen vacancy engineering for photocatalytic CO2 reduction, including synthesis, characterization, and recent advancements. The roles of oxygen vacancy in light absorption, charge separation, and surface CO2 conversion are discussed in detail. The challenges and opportunities of engineering oxygen vacancy in metal oxide-based photocatalysts for efficient CO2 reduction are also addressed.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Evangelos Delikonstantis, Marco Scapinello, Varun Singh, Hilde Poelman, Cesare Montesano, Luca Matteo Martini, Paolo Tosi, Guy B. Marin, Kevin M. Van Geem, Vladimir V. Galvita, Georgios D. Stefanidis
Summary: We propose and demonstrate an integrated electrified plasma-assisted chemical looping (PACL) process that achieves supra-equilibrium CO2 conversions at temperatures below 3000 K. By dissociating CO2 into CO/O using plasma and using an oxygen scavenger downstream to capture produced oxygen species, high CO2 conversions are achieved even at low temperatures.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Shanyong Chen, Shiyan Wang, Panpan Hao, Muhong Li, Yu Zhang, Jia Guo, Weiping Ding, Min Liu, Jinlan Wang, Xuefeng Guo
Summary: This study presents the design of a high-performance and stable electrocatalyst, utilizing IrNi nanoparticles confined in N,O-C nanocages to provide proton adsorption functionality, resulting in accelerated kinetics of hydrogen evolution reaction. The IrNi@N,O-C catalyst exhibits superior performance compared to other reported Ir-based catalysts, with low overpotential, high mass activity, and excellent durability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Xingyu Wang, Sanjubala Sahoo, Jose Gascon, Mikhail Bragin, Fangyuan Liu, Julia Olchowski, Samuel Rothfarb, Yuankai Huang, Wenjun Xiang, Pu-Xian Gao, S. Pamir Alpay, Baikun Li
Summary: In this study, the effects of polymer physical binding on the performance and selectivity of CO2RR were investigated. The addition of polytetrafluoroethylene (PTFE) was found to enhance the CO2 reduction process, modify the CO2RR pathway, and ultimately increase the average CH4 production by 10%. Despite an increase in ohmic resistance, the addition of PTFE lowered the energy barrier for CO protonation.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Bing Jiang, Marcos Gil-Sepulcre, Pablo Garrido-Barros, Carolina Gimbert-Surinach, Jia-Wei Wang, Jordi Garcia-Anton, Pau Nolis, Jordi Benet-Buchholz, Nuria Romero, Xavier Sala, Antoni Llobet
Summary: A cobalt complex with a kappa-N3P2 ligand is stable in air and exhibits good electrochemical behavior. It can catalyze the hydrogen evolution reaction and be regenerated with the addition of CoCp*(2).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Hannah S. Shafaat, Jenny Y. Yang
Summary: This Perspective discusses the complexity and challenges of electrochemical CO2 reduction, as well as how motifs observed in nature can be used to improve selectivity in synthetic systems. Researchers outline the thermodynamic and kinetic factors for designing improved catalysts, and draw parallels between synthetic systems and natural enzymes. By identifying key features that support highly efficient CO2 conversion reactions in nature, synthetic catalysts can be constructed to leverage similar chemical principles.
Article
Green & Sustainable Science & Technology
Ahmad Naquash, Junaid Haider, Muhammad Islam, Seongwoong Min, Sanggyu Lee, Hankwon Lim, Moonyong Lee, Muhammad Abdul Qyyum
Summary: In this study, a unique cryogenic approach for hydrogen enrichment and liquefaction was proposed and simulated. The proposed process showed lower energy consumption and higher exergy efficiency, supporting the development of a sustainable green economy.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Chemistry, Multidisciplinary
Robert Schloegl
Summary: Efforts to obtain raw materials from CO2 by catalytic reduction are pushing the boundaries of the chemical industry, while the dimensions of modern energy regimes will require the use of chemical batteries in conjunction with local production of renewable electricity. Methanol synthesis is an important option for chemical batteries, but there is still a lack of robust understanding of processes and material science of catalysts for the hydrogenation of CO2.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Miho Isegawa
Summary: The intermittent increase in CO2 concentration in the atmosphere is a serious problem and technology is needed to capture it efficiently. Membrane separation, particularly using Poly(dimethylsiloxane) (PDMS), has advantages over other capture technologies. However, the weak interaction between CO2 and PDMS hinders its CO2 selectivity. In this study, various chemical modifications were explored to enhance the interaction between PDMS and CO2, resulting in the incorporation of metallic elements which showed chemisorption of CO2 and improved CO2 affinity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Jiayi Wang, Zhuangzhi Wu, Dezhi Wang
Summary: This study reports a phase engineering strategy for MoS2 to enhance the activity of NRR and improve the selectivity by optimizing active sites and enhancing N2 adsorption. The optimal MoS2/C-0.4 electrocatalyst shows a high ammonia yield rate and Faradaic efficiency, outperforming other MoS2-based electrocatalysts. This work provides insights into synchronizing catalytic activity and selectivity. Rating: 8/10.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Multidisciplinary Sciences
Kaian Sun, Xueyan Wu, Zewen Zhuang, Leyu Liu, Jinjie Fang, Lingyou Zeng, Junguo Ma, Shoujie Liu, Jiazhan Li, Ruoyun Dai, Xin Tan, Ke Yu, Di Liu, Weng-Chon Cheong, Aijian Huang, Yunqi Liu, Yuan Pan, Hai Xiao, Chen Chen
Summary: Understanding the role of interfacial water in neutral media is crucial for improving the rate of hydrogen evolution reaction (HER). In this study, the authors investigate the synergy between Ru single atoms and RuSex clusters and find that the interfacial water layer plays a critical role in governing neutral HER. By disordering the interfacial water network, RuSex enhances the transport of H2O*/OH* and significantly improves the HER performance in neutral media.
NATURE COMMUNICATIONS
(2022)
Article
Energy & Fuels
Nabila Shamim, Shuza Binzaid, Jorge Federico Gabitto, John Okyere Attia
Summary: This study presents a model of a chemical-electrochemical cyclical process that can capture carbon dioxide and produce hydrogen and electrical energy. The process enhances carbon capture by shifting the equilibrium towards bicarbonate production through a reaction at the cathode.
Review
Engineering, Environmental
Frederick de Meyer, Charles Bignaud
Summary: Absorption in an aqueous amine solution is the most mature industrial process for capturing CO2 but hindered by high costs. Using a catalyst may speed up absorption and lower energy costs, though regeneration is fundamentally controlled by thermodynamics. Research aims to align with industrial reality, emphasizing the need for more industry-focused experiments and analysis on the benefits of catalyst use.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Esfandiyar Naeiji, Alireza Noorpoor, Hossein Ghanavati
Summary: This study investigated two methods of biogas upgrading from organic municipal waste, comparing their thermoeconomic indices. The results showed that the chemical scrubbing method was more economically feasible and could produce high-intensity hydrogen.
Article
Chemistry, Applied
Dimitris Ipsakis, Eleni Heracleous, Lishil Silvester, Dragomir B. Bukur, Angeliki A. Lemonidou
Article
Chemistry, Applied
V-L Yfanti, A. A. Lemonidou
Editorial Material
Chemistry, Applied
Nimir O. Elbashir, Anjaneyulu Chatla, Angeliki Lemonidou, James J. Spivey
Article
Chemistry, Applied
Marinela D. Zhurka, Angeliki A. Lemonidou, Panagiotis N. Kechagiopoulos
Summary: Rh is more active and selective than Ni, while CeO2-ZrO2-La2O3 efficiently promotes the water gas shift reaction, leading to higher activity, selectivity, and stability in Rh/CeO2-ZrO2-La2O3 catalyst for ethanol steam reforming.
Article
Engineering, Chemical
Theodoros Papalas, Andy N. Antzaras, Angeliki A. Lemonidou
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Applied
Andy N. Antzaras, Eleni Heracleous, Angeliki A. Lemonidou
Summary: In this study, hybrid, multifunctional catalytic materials based on NiO and CaO were developed for the Sorption Enhanced Chemical Looping Steam Methane Reforming (SE-CL-SMR) process, achieving high CH4 conversion and high-purity hydrogen production at 650 degrees C. Compared to a mixed bed of sorbent and oxygen transfer material, operation with the multifunctional material allows for more efficient use of the heat generated during regeneration.
Article
Chemistry, Physical
Stavros A. Theofanidis, Charis Loizidis, Eleni Heracleous, Angeliki A. Lemonidou
JOURNAL OF CATALYSIS
(2020)
Article
Engineering, Environmental
Athanasios Scaltsoyiannes, Andy Antzaras, Georgios Koilaridis, Angeliki Lemonidou
Summary: Calcium looping is an attractive technology for post-combustion CO2 capture, hydrogen production, and energy storage applications. The carbonation reaction is a first-order process with respect to CO2 in the gas phase, and the developed kinetic model can predict the carbonation rate of CaO-based materials regardless of the type and percentage of the contained inert phase.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Mohammad Heidari, Maryam Tahmasebpoor, Andy Antzaras, Angeliki A. Lemonidou
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2020)
Article
Chemistry, Multidisciplinary
Theodoros Papalas, Andy N. Antzaras, Angeliki A. Lemonidou
Summary: This study investigated the CO2 capture performance of MgO derived from mineral magnesite doped with limestone and molten Li, Na, and K nitrates, showing that increasing the molten promoter loading can enhance CO2 sorption rate, while higher CaCO3 content impedes CO2 diffusion. Despite morphological transformations during cyclic operation, redistribution of alkali salts contributes to the stability and promising performance of the sorbent.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Physical
Stavros A. Theofanidis, G. T. Kasun Kalhara Gunasooriya, Ioanna Itskou, Maria Tasioula, Angeliki A. Lemonidou
Summary: The study reveals the potential of using iron oxide as a catalyst support for the on-purpose ethylene production through CO2-assisted oxidative dehydrogenation of ethane. The selectivity of the catalyst towards C-H bond cleavage can be controlled by adjusting the Ni/Fe ratio. Fine-tuning the Ni/Fe molar ratio leads to stable catalytic performance with improved selectivity towards ethylene and ethane conversion.
Article
Chemistry, Physical
Maria Tasioula, Emmanuelle de Clermont Gallerande, Stavros A. Theofanidis, Alessandro Longo, Kirill A. Lomachenko, Christoph Sahle, Angeliki A. Lemonidou
Summary: Iron oxide-based catalysts demonstrated highly selective conversion of CO2 to CO in parallel with ethane dehydrogenation, achieving 90% selectivity at a conversion rate of 23.3%. X-ray characterization techniques and structural modeling were used to understand the active sites responsible for C-H bond scission. The dynamic structural modifications of the catalysts during the reaction showed the crucial role of the support, resulting in unprecedented ethylene selectivity.
Article
Engineering, Chemical
Rita Kol, Elisabetta Carrieri, Sergei Gusev, Michiel Verswyvel, Norbert Niessner, Angeliki Lemonidou, Dimitris S. Achilias, Steven De Meester
Summary: The potential of filtration and centrifugation was analyzed to remove impurities and pigments from polystyrene waste. Filtration showed poor performance in removing PB-PS particles, while centrifugation successfully separated particles and pigments, reducing turbidity. Centrifugation can be used for initial cleaning of polystyrene waste to facilitate further processing.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Marinela D. Zhurka, James A. Anderson, Alan J. McCue, Angeliki A. Lemonidou, Panagiotis N. Kechagiopoulos
Summary: Sustainable hydrogen production from bio-ethanol can be improved by using low-cost and abundant minerals as catalyst supports. This study focuses on the kinetic study of ethanol steam reforming using a Ni catalyst supported on natural sepiolite, and investigates the effect of the support on the reaction mechanism. It is found that the mechanism depends on the catalyst calcination temperature and degree of hydration of the sepiolite, with the presence of multiple adsorption sites for oxygenates and water.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Applied
Andy N. Antzaras, Eleni Heracleous, Angeliki A. Lemonidou
FUEL PROCESSING TECHNOLOGY
(2020)
Article
Engineering, Chemical
Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang
Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan
Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler
Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy
Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg
Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang
Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu
Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang
Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang
Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli
Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang
Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu
Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov
Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Aliakbar Roosta, Nima Rezaei
Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan
Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.
CHEMICAL ENGINEERING SCIENCE
(2024)
