Article
Chemistry, Physical
S. Blazquez, M. M. Conde, C. Vega, E. Sanz
Summary: CO2 and CH4 hydrates are important both energetically and environmentally. Molecular dynamics simulations reveal that the growth rate of these hydrates is affected by the incorporation of guest molecules, with CO2 hydrate growing faster due to higher solubility. Additionally, higher temperatures require more molecular motion for solid growth. Our calculations show good agreement with experiments of hydrate growth along the guest-solution interface, but further work is needed to reconcile different experimental results.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Energy & Fuels
Stian Almenningen, Arne Graue, Geir Ersland
Summary: This paper reviews experimental studies of CH4-CO2 exchange in CH4 hydrate-bearing sandstone core plugs, highlighting the critical role of water saturation in these processes. The results presented are important for assessing natural gas hydrate reservoirs as candidates for CO2 injection with concurrent CH4 gas production.
Article
Energy & Fuels
Qian Ouyang, Jyoti Shanker Pandey, Nicolas von Solms
Summary: Early studies have shown that multistep depressurization of CH4/CO2 mixed hydrates can simultaneously produce additional CH4 and store CO2 in hydrate-bearing sediments. This experimental work identified three critical parameters (CH4/CO2 ratio, residual water saturation, and shut-in period) and investigated their effects on production parameters. The results showed that low residual water saturation and a higher CH4/CO2 ratio in CH4/CO2 mixed hydrates resulted in optimal production parameters. Additionally, the shut-in period between pressure releases had a direct effect on production and storage performances. The importance of these critical parameters in designing an effective production and storage scheme after CO2 injection into CH4 hydrates was demonstrated.
Article
Engineering, Chemical
Zucheng Cheng, Weiguo Liu, Shaohua Li, Sijia Wang, Yingying Liu, Xiang Sun, Cong Chen, Lanlan Jiang, Yongchen Song
Summary: This study evaluated the performance of SDS in the separation efficiency of simulated biogas. The experimental results showed that higher driving forces led to a significant increase in gas capture, dominated by the CH4 component. Hydrate growth mainly occurred in the liquid phase, and the separation factor was positively correlated with the induction time. Gas capture per unit volume of solution could be improved at higher gas-liquid ratios, while high-pressure failure behavior was observed. The defoamer had no significant effect on hydrate generation kinetics and separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Sai Kiran Burla, Bhavya Tulluru, Pinnelli S. R. Prasad
Summary: Amino acids are important additives in gas-hydrate based technology, playing a dual role as inhibitors or promoters depending on concentration. The nature of the side chain and its length are critical factors, with different amino acids affecting CO2 and CH4 hydrates differently.
Article
Energy & Fuels
Yue Ma, Qiang Gao, Jian Guan, Chi Zhang, Jianzhong Zhao
Summary: In this study, experiments were conducted to dissociate mixed CO2 + CH4 hydrates by depressurization and thermal stimulation. The kinetics, fluid production behavior, heat transfer characteristics, and separation factors were examined during the hydrate formation and dissociation processes. The results showed consistent gas consumption and phase saturation, with a stochastic induction time ranging from 38 to 58 minutes. The hydrate exhibited a strong selectivity to CH4 during the gas mixture hydrate formation process, and the gas production increased with decreasing depressurization pressure.
Article
Energy & Fuels
Jiwoong Seol
Summary: The addition of propylene oxide (PO) and epoxyisobutane (EIB) significantly improves the thermodynamic stability of methane hydrates and enhances methane storage capacity. The microstructures of the methane hydrates containing both PO and EIB were identified as the sII type, showing stability even at ambient temperature and mild pressure. Both PO and EIB act as powerful promoters with good water miscibility, offering potential for sustainable and energy-efficient methane storage technologies.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Green & Sustainable Science & Technology
Pengfei Wang, Ying Teng, Jinlong Zhu, Wancheng Bao, Songbai Han, Yun Li, Yusheng Zhao, Heping Xie
Summary: The synergy between metal-organic frameworks (MOFs) and gas hydrates is a potential technology for CH4 storage and CO2 separation. This review summarizes the structural characteristics of MOFs and gas hydrates and analyzes their effects on hydrate formation, thermodynamics, kinetics, and gas storage capacity. The paper also highlights the research progress and challenges associated with MOF-hydrate synergy and their impact on CH4 storage and CO2 separation.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Engineering, Environmental
Yu-Hsuan Ho, Yau Zu Khoo, Yan-Ping Chen, Ryo Ohmura, Li-Jen Chen
Summary: This study investigates the thermodynamic and kinetic influence of polyethylenimine (PEI) on the formation of methane and carbon dioxide hydrates. It is found that PEI acts as a thermodynamic inhibitor, inhibiting the formation of hydrates. However, it has different effects on methane and carbon dioxide hydrates kinetically, inhibiting methane hydrate formation and promoting carbon dioxide hydrate formation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Parisa Naeiji, Mengdi Pan, Manja Luzi-Helbing, Saman Alavi, Judith M. Schicks
Summary: A study was conducted to investigate the dissociation behavior of methane hydrates under different temperature and pressure conditions. Both experimental and simulated data showed that the behavior differed above and below the freezing point of water. At temperatures near or below freezing, CH4 hydrates exhibited self-preservation behaviors due to the formation of a quasi-liquid or amorphous phase at the outer layers of the hydrate crystal. Above the freezing point, dissociation appeared to initiate at the surface of the hydrate phase.
Article
Energy & Fuels
Elke Kossel, Nikolaus K. Bigalke, Christian Deusner, Matthias Haeckel
Summary: This study used confocal Raman spectroscopy to investigate the exchange of CH4 by CO2 in gas hydrates, identifying both gas molecule exchange and gas-hydrate dissociation processes in the sample. Diffusion coefficients obtained from the analysis ranged from 10(-13) to 10(-18) m(2)/s, proposing a simple modeling approach for CH4 production through guest-molecule exchange combined with gas-hydrate dissociation term.
Article
Multidisciplinary Sciences
Shubhangi Srivastava, Ann Mary Kollemparembil, Viktoria Zettel, Timo Classen, Bernhard Gatternig, Antonio Delgado, Bernd Hitzmann
Summary: The dissociation of CO2 gas hydrates with amino acid and surfactant promoters was studied, and it was found that leucine and lecithin are effective promoters for enhancing CO2 uptake and stability in gas hydrate formation.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Shengli Liu, Wenxiu Zhang, Huanhua Wu, Jiaheng Wang, Yongqi Yuan, Sikai Wang, Jinxiang Liu
Summary: Clathrate hydrate is a promising candidate for hydrogen storage, and the addition of natural gas can reduce the formation pressure and improve energy density. Through calculations and simulations, we estimated the hydrogen storage capacity of H2-CH4 binary hydrate and studied its thermodynamical and mechanical stability. The binary hydrate can maintain its structure under moderate temperature and pressure, and exhibits a self-preservation effect at -270 K, making it suitable for hydrogen storage and transport. These findings enhance our understanding of mixed hydrate as a viable hydrogen storage technology for achieving a sustainable hydrogen economy.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Lanyun Wang, Xiaoran Lu, Yongliang Xu
Summary: This study found that adding 5-10% RNS-A can shorten the induction time during CO2 hydrate formation, and 6% RNS-A showed the best gas consumption and reaction time, making it the optimal concentration for CO2 capture and sequestration.
Article
Engineering, Chemical
Alberto Maria Gambelli, Andrea Di Schino, Federico Rossi
Summary: Through experiments, it was found that Cu particles were able to promote methane hydrates and inhibit carbon dioxide hydrates in additive manufacturing, with the effect depending on the particle concentration and chemical properties. The results were validated by comparing them with the literature.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Chemistry, Physical
Romuald Coupan, Eve Pere, Christophe Dicharry, Frederic Plantier, Joseph Diaz, Abdel Khoukh, Joachim Allouche, Stephane Labat, Virginie Pellerin, Jean-Paul Grenet, Jean-Marc Sotiropoulos, Pascale Senechal, Fabrice Guerton, Peter Moonen, Jean-Philippe Torre
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Multidisciplinary
Nelly Hobeika, Patrick Bouriat, Abdelhafid Touil, Daniel Broseta, Ross Brown, Jean Dubessy
Article
Energy & Fuels
Romuald Coupan, Christophe Dicharry, Jean-Philippe Torre
Article
Engineering, Chemical
Romuald Coupan, Jean-Philippe Torre, Christophe Dicharry, Mehrdji Hemati, Frederic Plantier
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Thermodynamics
Romuald Coupan, Maria Martin Conde, Christelle Miqueu, Christophe Dicharry, Jean-Philippe Torre
JOURNAL OF CHEMICAL THERMODYNAMICS
(2018)
Article
Thermodynamics
Henry Delroisse, Frederic Plantier, Laurent Marlin, Christophe Dicharry, Laura Froute, Remi Andre, Jean-Philippe Torre
JOURNAL OF CHEMICAL THERMODYNAMICS
(2018)
Article
Engineering, Chemical
Dyhia Atig, Abdelhafid Touil, Manuel Ildefonso, Laurent Marlin, Patrick Bouriat, Daniel Broseta
CHEMICAL ENGINEERING SCIENCE
(2018)
Article
Energy & Fuels
H. Delroisse, J. -P. Torre, C. Dicharry
Article
Chemistry, Multidisciplinary
Abdelhafid Touil, Daniel Broseta, Arnaud Desmedt
Article
Energy & Fuels
Thi Xiu Le, Michel Bornert, Ross Brown, Patrick Aimedieu, Daniel Broseta, Baptiste Chabot, Andrew King, Anh Minh Tang
Summary: This study used high-resolution optical microscopy and synchrotron X-ray computed tomography to observe methane hydrate growth in marine sandy sediments, revealing previously unidentified features such as hollow filaments and Haines jumps. These techniques allowed for detailed observations at spatial scales below the pore size and temporal scales below 1 s, providing valuable insights into the growth processes of methane hydrate.
Article
Energy & Fuels
Dan Vladimir Nichita, Daniel Broseta, Francois Montel
OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES
(2019)
Article
Chemistry, Multidisciplinary
Henry Delroisse, Jean-Philippe Torre, Christophe Dicharry
CRYSTAL GROWTH & DESIGN
(2017)
Article
Chemistry, Physical
Romuald Coupan, Eve Pere, Christophe Dicharry, Jean-Philippe Torre
JOURNAL OF PHYSICAL CHEMISTRY A
(2017)
Article
Engineering, Environmental
Romuald Coupan, Frederic Plantier, Jean-Philippe Torre, Christophe Dicharry, Pascale Senechal, Fabrice Guerton, Peter Moonen, Abdel Khoukh, Sid Ahmed Kessas, Mehrdji Hemati
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Engineering, Chemical
Jeremy Oignet, Anthony Delahaye, Jean-Philippe Torre, Christophe Dicharry, Hong Minh Hoarng, Pascal Clain, Veronique Osswald, Ziad Youssef, Laurence Fournaison
CHEMICAL ENGINEERING SCIENCE
(2017)
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)
