Article
Chemistry, Multidisciplinary
Eduardo Hernando Abad, Frederic Bouyer, Laroussi Chaabane, Alan Zerrouki, Jeremie Margueritat, Lucien Saviot
Summary: The vibrational dynamics in the sub-THz range of mesoporous silica nanoparticles with ordered cylindrical mesopores were studied. The structure of MCM-41 and SBA-15 particles was determined using SEM, XRD, N2 physisorption, and Raman scattering. The stiffness of the silica walls (speed of sound) was determined using Brillouin scattering measurements and finite element calculations, and the relevance of this approach was discussed based on the comparison with numerical and experimental results and previous works reported in the literature.
Article
Chemistry, Multidisciplinary
Leilei Xu, Xueying Wen, Mindong Chen, Chufei Lv, Yan Cui, Xianyun Wu, Cai-E Wu, Zhichao Miao, Xun Hu
Summary: The study showed that the La promoter is beneficial for increasing the surface basicity and enhancing the dispersion of metallic Ni, while the catalyst supported on mesoporous nanosponge MFI zeolite exhibited higher activity and better long-term stability in CO2 methanation reaction. Both the nanosponge structure and La2O3 promoter contributed to decreasing the reaction activation energy.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Environmental
Mirian E. Casco, Sven Gratz, Dirk Wallacher, Nico Grimm, Daniel M. Tobbens, Malina Bilo, Natascha Speil, Michael Froba, Lars Borchardt
Summary: The study investigated methane hydrate formation process in confinement through high-pressure methane sorption experiments on two wet materials with similar pore size distributions, B-PMO (hydrophobic) and MCM-41 (hydrophilic). The results showed that external water and 'core water' inside the pore were rapidly consumed in the first step to form bulk-like hydrate, while adsorbed water was slowly consumed in the second step to form less stable confined hydrates.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Cameron Alexander Hurd Price, Laura Pastor-Perez, Tomas Ramirez Reina, Jian Liu
Summary: This study successfully synthesized highly uniform NiCo@SiO2 yolk@shell catalysts and demonstrated their effectiveness in CO2 recycling. The engineered microstructure catalysts showed high CO2 conversion levels and control over CO selectivity, with further research indicating good performance and resistance under reaction conditions.
Article
Chemistry, Applied
Paulina Szczyglewska, Agnieszka Feliczak-Guzik, Izabela Nowak
Summary: The study aimed to comprehensively analyze the catalytic performance of palladium and platinum catalysts on SBA-16 in hydrodeoxygenation of chemical compounds generated in biomass processing. It found significant differences in catalytic performance between palladium and platinum modified materials, with palladium-modified catalyst allowing for high conversion rates and platinum-modified catalyst showing higher selectivity to compounds without oxygen atoms. The direct impact of process conditions (temperature, pressure) on the HDO process was established and characterized.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Yong Min Park, Jae Min Cho, Gui Young Han, Jong Wook Bae
Summary: The highly ordered mesoporous Fe-Ni bimetal oxide (m-FeNi) catalysts showed enhanced activity and stability with high CO2 selectivity and small methanation activity at an optimal Ni/Fe ratio of 0.24. The well-dispersed Ni nanoparticles played a key role in altering the reducibility of Fe nanoparticles and increasing the interaction of Fe2O3-NiO interfaces, leading to less aggregation of Fe nanoparticles and smaller coke depositions. The newly formed stronger interactions between the mesoporous Fe2O3 and highly dispersed NiO nanoparticles at their optimal amounts were responsible for the superior structural and catalytic stability of m-FeNi metal oxides even under HT-WGS reaction conditions.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Energy & Fuels
Leilei Xu, Chunying Xu, Bin Chen, Yufang Bian, Xueying Wen, Ge Cheng, Cai-e Wu, Jian Qiu, Mindong Chen
Summary: A series of hexagonal mesoporous silica confined Ni-based CO2 methanation catalysts were successfully synthesized by a one-pot strategy. The Ni-HMS catalysts exhibited lower activation energy and enhanced low-temperature activity. The reaction intermediates and possible reaction pathways were investigated using online TPSR and in-situ DRIFTS techniques.
Article
Engineering, Chemical
John-Timothy Anyanwu, Yiren Wang, Ralph T. Yang
Summary: The water concentration significantly influences amine loading and grafting rate on SBA-15 mesoporous silica, with water being more effective than alcohol. Beyond a certain threshold, increasing aminosilane content does not result in higher amine loading. The mere presence of water during grafting accelerates the complete grafting of amines to supports in a short period of time.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Bahare Abdolahi, Mohammad Bagher Gholivand, Mojtaba Shamsipur, Masoud Amiri
Summary: In this study, a supercapacitor based on ordered mesoporous carbon/molybdenum carbide (OMC/Mo2C) nanocomposite was successfully manufactured. The electrode exhibited exceptional electrochemical performance, high capacity, and excellent cycling stability. These findings can contribute to the development of high-performance energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jason Richard, Anthony Phimphachanh, Julien Schneider, Shyamapada Nandi, Eline Laurent, Patrick Lacroix-Desmazes, Philippe Trens, Sabine Devautour-Vinot, Nathalie Marcotte, Corine Gerardin
Summary: Polyacid-functionalized inorganic mesoporous materials have great potential for applications as catalysts, molecular sieves, or drug carriers. This study presents an efficient and environmentally friendly synthesis route to prepare ordered mesoporous silica functionalized with strong polyacids, which exhibit excellent proton conductivity.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Anthony Griffin, Genwei Chen, Mark Robertson, Kun Wang, Yizhi Xiang, Zhe Qiang
Summary: Conventional ordered mesoporous carbon (OMC) production requires long processing times, but this work demonstrates accelerated synthesis of OMCs using dielectric barrier discharge plasma, achieving carbonization within 15 minutes. The use of plasma enables faster production rates and does not require additional substrates within the OMC precursor systems.
Review
Chemistry, Multidisciplinary
Plinio Innocenzi
Summary: The synthesis of ordered mesoporous films via self-assembly is a significant achievement in nanoscience, but controlling the complex chemical-physical phenomena caused by solvent evaporation remains challenging. While there have been advancements in basic research, more understanding is needed on the self-organization mechanism and the physics and chemistry of mesoscale porosity.
Article
Chemistry, Physical
Yaroslav Shchur, Andriy Kityk, Viktor V. Strelchuk, Andrii S. Nikolenko, Nazariy A. Andrushchak, Patrick Huber, Anatolii S. Andrushchak
Summary: A study was conducted on the complex lattice dynamics of a SiO2:KH2PO4 nanocomposite, showing that the confined crystals exhibit similar Raman spectra to bulk KH2PO4 crystals, confirming the successful synthesis of KH2PO4 nanocrystals. The experimental and calculated phonon spectra suggest a lattice instability due to anharmonicity in the vibrational dynamics of KH2PO4 crystals, with hydrogen atoms playing a significant role in the lattice dynamics. Marginal redistribution of Raman intensities in confined crystals compared to unconfined crystals may be attributed to slightly altered crystal fields and interatomic interactions, particularly near the silica pore surfaces.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Wentao Zhang, Fengqing Liu, Xun Kan, Yong Zheng, Anmin Zheng, Fujian Liu, Lilong Jiang
Summary: A class of sulfonic group functionalized and ordered mesoporous silica superacids (OMS-SO3H-xs) was prepared through enhanced host-guest assembly. The OMS-SO3H-xs exhibit ultra-high precision for NH3 reversible adsorption and separation, with high NH3 capacity and extraordinary selectivities. Furthermore, they possess excellent stability and controllable NH3 interaction and transportation characteristics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemical Research Methods
Dan Wang, Xueguo Chen, Juanjuan Feng, Min Sun
Summary: This review focuses on the recent development and application of ordered mesoporous silica materials for solid-phase extraction. Various types of mesoporous silica, including functionalized ones, are discussed in terms of their applications in different solid-phase extraction techniques. The effectiveness of these materials in extracting and determining various target analytes using different detection methods is highlighted, and their successful application in different matrix samples is demonstrated.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Chemistry, Physical
Yuting Li, Xiaoxia Han, Chaofan Zhao, Lin Yue, Jinxian Zhao, Jun Ren
Article
Engineering, Chemical
Jinxian Zhao, Ruina Shi, Yanhong Quan, Junjie Liu, Juan Wang, Yongli Pei, Xuhui Wang, Zhong Li, Jun Ren
CHEMICAL ENGINEERING SCIENCE
(2019)
Article
Chemistry, Multidisciplinary
Xiaoxia Han, Lin Yue, Chaofan Zhao, Shaohua Jiang, Junjie Liu, Yuting Li, Jun Ren
Article
Chemistry, Physical
Jiangwei An, Xuhui Wang, Jinxian Zhao, Shaohua Jiang, Yanhong Quan, Yongli Pei, Mengmeng Wu, Jun Ren
MOLECULAR CATALYSIS
(2020)
Article
Nanoscience & Nanotechnology
Ruina Shi, Jinxian Zhao, Yanhong Quan, Xuhui Wang, Jiangwei An, Junjie Liu, Wei Sun, Zhong Li, Jun Ren
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Mengmeng Wu, Xiaoxiong Hou, Yanhong Quan, Jinxian Zhao, Jun Ren
Article
Engineering, Chemical
Xuhui Wang, Jinxian Zhao, Ying Li, Shouying Huang, Jiangwei An, Ruina Shi, Yongli Pei, Zhong Li, Jun Ren
Summary: ZrO2 is a potential catalyst for the direct synthesis of DMC, with m-ZrO2 showing higher DMC yield than t-ZrO2. The amount and strength of surface Brønsted acid sites play a crucial role in the catalytic performance of ZrO2, and m-ZrO2's smaller band gap enhances its catalytic activity for DMC synthesis.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Yahong Han, Jinxian Zhao, Yanhong Quan, Shunan Yin, Shiping Wu, Jun Ren
Summary: The doping of La2O3 into CeO2 resulted in decreased grain size of Ni particles, increased Ni electron cloud density, and accelerated CO dissociation, leading to improved CO methanation activity. Additionally, enhanced oxygen vacancies were helpful in improving the anticoking properties of the catalyst.
Article
Engineering, Chemical
Ruina Shi, Jinxian Zhao, Yanhong Quan, Yongli Pei, Xuhui Wang, Zhong Li, Jun Ren
Summary: The strategy of wrapping metal nanoparticles in graphene shells to design highly active and stable catalysts shows promising potential. The nitrogen-doped graphene-coated copper nanoparticles composite exhibited superior catalytic performance and stability in reactions such as the oxidative carbonylation of methanol to dimethyl carbonate.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Yongli Pei, Yanhong Quan, Xuhui Wang, Jinxian Zhao, Ruina Shi, Zhong Li, Jun Ren
Summary: Cu/NCNS-x catalysts were fabricated to address deactivation issues in DMC synthesis caused by Cu NPs. The study revealed the mechanism of Cu reconstruction during the reaction process.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Shiping Wu, Wei Sun, Xuhui Wang, Jinxian Zhao, Yan Li, Yanhong Quan, Jun Ren
Summary: The role of Zn promoter in the synthesis of methyl formate (MF) from methanol was investigated using density functional theory (DFT) calculations on Zn-doped Cu(111) alloy and Cu(111) surfaces. The rate determining step (RDS) was found to be the dehydrogenation of CH3O to CH2O on both surfaces, but the energy barrier was lower on the Cu3Zn(111) alloy surface. The Cu3Zn(111) alloy surface exhibited a kinetically favorable coupling for CH3O-CHO formation and effectively suppressed the formation of by-product CO.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Yahong Han, Yanhong Quan, Jinxian Zhao, Jun Ren
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Multidisciplinary
Chao Miao, Junjie Liu, Jinxian Zhao, Yanhong Quan, Tao Li, Yongli Pei, Xiaoliang Li, Jun Ren
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Xiaoxiong Hou, Jinxian Zhao, Junjie Liu, Yahong Han, Yongli Pei, Jun Ren
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.
