Article
Materials Science, Ceramics
Hao-Qiang Pang, Ting-Hui Fan, Tian Xia, Wen-Wei Qiao, Yan-Feng Gao
Summary: This study investigates the thermal conductivity and temperature response of silica aerogel doped with SiO2 micro hollow sphere particles (MHSP) using modeling and experimental testing. The results demonstrate a significant improvement in the thermal insulation performance of the aerogel when doped with SiO2 MHSP, particularly at larger temperature differences.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Thermodynamics
He Liu, You Tian, Sohrab Alex Mofid, Shanshan Li, Junjie Zhou, Mengyao Hu, Bjorn Petter Jelle, Tao Gao, Xuehong Wu, Zengyao Li
Summary: Hollow silica nanosphere packings can suppress heat conduction significantly through voids, small interparticle contact areas, and nanosized pores, showing potential in energy-efficient building applications. Developing a numerical model considering geometric parameters can effectively reduce the thermal conductivity of HSNSPs.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Engineering, Chemical
Chaitanya. A. A. Kavale, Niket. S. S. Kaisare, Himanshu Goyal
Summary: This study uses the volume averaging technique to convert pointwise governing equations into averaged equations for porous domain, in order to simulate catalytic monolith reactions. The traditional porous medium assumption leads to significant errors when dealing with catalytic reactions, but a technique to accurately calculate reaction rates has been proposed. The results show that this method reduces computational cost while maintaining accuracy.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Nancy Dib, Gerard-Philippe Zehil
Summary: This study introduces two novel predictive models for the effective thermal conductivity of two-phase isotropic particulate composites, including a simple analytical model and a generalized semi-analytical model considering both particle contiguity and thermal resistance. These models can match experimental data well and it is found that well-graded particle size distributions favor the formation of filler conduction chains.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Carolina De los Santos, Hilario Vidal, Jose Manuel Gatica, M. Pilar Yeste, Gustavo Cifredo, Jorge Castiglioni
Summary: Clay honeycomb monoliths washcoated by pillared clay were used as support of manganese catalysts for acetone oxidation. The pillared clay washcoated sample exhibited better performance in acetone oxidation than the non-coated sample with higher manganese loading.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Environmental
Fei Zhang, Danhui Ren, Yinhang Zhang, Lingqi Huang, Yuxuan Sun, Wei Wang, Qi Zhang, Wei Feng, Qingbin Zheng
Summary: In this study, a facile and economical method for constructing highly oriented graphite frameworks via room-temperature acid expansion was proposed, and successfully applied to the preparation of flexible composites with superior thermal conductivity. This method is suitable for large-scale production and commercialization.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Myeongjin Kim, Joo Hyun Moon
Summary: This study aims to design a thermal system to estimate the effective thermal conductivity in thermosyphon by analyzing the relationship between thermal resistance and effective thermal conductivity. Computational fluid dynamics is used to simulate the thermosyphon under different parameters, and a correlation model is derived. The simulation data is validated using a Deep Neural Network, confirming the consistency and reliability of the results.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2022)
Article
Energy & Fuels
Ganesh Kumar Poongavanam, Vinothkumar Sivalingam, Santosh Ravichandran, Amrit Kumar Thakur, Sung Chul Kim
Summary: In this study, response surface methodology was used to optimize the thermal and electrical conductivity characteristics of a nanofluid comprising MWCNT-SG/H2O blend. The results showed that the MWCNT volume concentration and operating temperature significantly influence the thermal and electrical conductivities of the nanofluid, with experimental results confirming the optimization outcomes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Mechanical
Rongnan Yuan, Shouxiang Lu
Summary: By designing an experimental equipment and conducting numerical simulation, the effective thermal conductivity of metallic honeycomb sandwich structures was successfully evaluated, with results matching experimental data. The experimentally calculated effective thermal conductivity value was close to that calculated by an empirical equation, showing applicability to structures with a significant amount of air.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Thermodynamics
Myeongjin Kim, Joo Hyun Moon
Summary: This study investigates the heat transfer characteristics of a two-phase thermosyphon under different conditions using computational fluid dynamics, and reveals that thermal resistance decreases with increasing water amount, heat pipe diameter, and heater power.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Environmental
Shirjana Saud, Duc Ba Nguyen, Roshan Mangal Bhattarai, Nosir Matyakubov, Iljeong Heo, Sang-Joon Kim, Young Jin Kim, Jin Hee Lee, Young Sun Mok
Summary: The study found that changing the reactor configuration and key parameters can affect the corona discharge plasma in honeycomb monoliths, such as adding a small amount of metal to the metal honeycomb monolith significantly increasing the discharge power, while coating the monolith with zeolite like ZSM-5 can reduce the discharge power. Operating temperature, feed gas humidity, and gas velocity are also key factors affecting discharge performance.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
A. P. Shivprasad, S. C. Vogel, V. K. Mehta, M. W. D. Cooper, T. A. Saleh, J. T. White, J. R. Wermer, E. P. Luther, H. R. Trellue
Summary: Yttrium dihydride has been successfully prepared in high-density monoliths using powder metallurgical methods in this study. The measured and calculated physical properties of yttrium dihydride confirm the feasibility and high quality of this method for large-scale production.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Ibrahim K. Alsulami, Shittu Abdullahi, Ahmed Alshahrie, Numan Salah
Summary: Recently, a ultrafine 2D structured nanocomposite of graphene-nanodiamonds has been developed through a microwave-assisted chemical route. This new material with attractive structural properties exhibits great potential in thermoelectric applications. By integrating nanodiamonds into graphene, the material's structural modification has shown significant impact on thermoelectric properties above and below room temperature. The addition of nanodiamonds enhances the power factor and reduces thermal conductivity, resulting in a substantial improvement in the figure of merit.
Article
Chemistry, Physical
Haolei Wang, Xianglei Liu, Qingyang Luo, Haichen Yao, Qiao Xu, Yang Tian, Jianguo Wang, Yimin Xuan
Summary: This study presents an artificial honeycomb-honey based on TiN nanoparticles decorated porous AlN skeletons-PCMs composites, featuring excellent thermal conductivity and energy storage capacity, suitable for rapid, efficient, stable, and compact solar capture and thermal energy storage.
Article
Mechanics
Shuai Xu, Yu Feng, Yifeng Zhang, Jiang Qin, Bing Li
Summary: This study presents a theoretical derivation of a heat transfer correlation model for fully developed flow with gas-phase homogeneous chemical reactions. Numerical simulations show that the derived correlation is both theoretically grounded and practically usable.
Article
Chemistry, Applied
Federico Sascha Franchi, Matteo Ambrosetti, Riccardo Balzarotti, Mauro Bracconi, Gianpiero Groppi, Enrico Tronconi
Summary: This study introduces a novel methodology for evaluating the external mass transfer properties of 3D printed catalyst supports, with experimental validation showing the equivalence and effectiveness of the proposed approach.
Article
Engineering, Chemical
Lei Zheng, Matteo Ambrosetti, Daniele Marangoni, Alessandra Beretta, Gianpiero Groppi, Enrico Tronconi
Summary: This study reports on the electrification of a SiSiC foam for methane steam reforming, utilizing renewable electricity. The results demonstrate high energy efficiency and low carbon emissions, indicating promising potential for future applications.
Article
Chemistry, Applied
Nicole Daniela Nasello, Federica Gramigni, Isabella Nova, Enrico Tronconi, Frank Hofmann, Simone Dieterich, Marcus Crocoll, Michel Weibel
Summary: The study investigates the effect of oxygen feed content variation on the conversion of NOx and the formation of N2O over a Cu-CHA catalyst under Standard SCR reaction conditions. The results show that increasing the oxygen feed content leads to higher NOx conversion and N2O formation. The study also reveals that the formation of N2O is sensitive to changes in oxygen concentration and is influenced by temperature and oxygen feed content.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Lei Zheng, Matteo Ambrosetti, Francesca Zaio, Alessandra Beretta, Gianpiero Groppi, Enrico Tronconi
Summary: Electrified methane steam reforming (eMSR) is a promising concept for low-carbon hydrogen production. The innovative eMSR reactor uses SiSiC foams coated with Rh/Al2O3 catalyst as electrical resistances to generate reaction heat. The system achieves complete methane conversions even at a high space velocity of 200000 Nl/h/kgcat, with a specific energy demand as low as 1.24 kWh/Nm3H2 and an unprecedented energy efficiency of 81%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
C. Coffano, A. Porta, C. G. Visconti, F. Rabino, G. Franzoni, B. Picutti, L. Lietti
Summary: This study investigates the one-pot conversion of CO2 into lower olefins using a physical mixture of a methanol synthesis catalyst and a methanol-to-olefins (MTO) zeolite. The individual reactions are tested under CO2 to olefins conditions, providing insights on the reaction mechanism and catalyst stability. The operating conditions and the effects of different catalyst samples are analyzed. The study also compares the methanol-mediated and modified Fischer-Tropsch (MFT) routes, highlighting the strengths and weaknesses of each reaction pathway.
Article
Engineering, Environmental
Lei Zheng, Matteo Ambrosetti, Alessandra Beretta, Gianpiero Groppi, Enrico Tronconi
Summary: The growing concern for the environment has led to the development of catalytic CO2 valorization as a solution to reduce the carbon footprint of valuable chemical products. Electrification of CO2 conversion processes, such as CO2 reforming of methane and reverse water-gas shift, offers a technological solution to reduce unwanted CO2 emissions. A promising approach using catalytically activated open-cell foams as Joule heating substrates has demonstrated excellent catalytic and electrical stability for direct electrification of these processes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Riccardo Rinaldi, Carlo Giorgio Visconti
Summary: This study investigates the steady state and transient performances of a multi-tubular fixed bed reactor for methanol production from biogas. The novel concept proposed and assessed is the flexible operation of the reactor using carbon dioxide and renewable hydrogen only when economically convenient. The results show that the multi-tubular reactor design can handle both operating conditions effectively and steady-state conditions can be reached quickly after switching between conditions.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Energy & Fuels
Alessandro Porta, Roberto Matarrese, Carlo Giorgio Visconti, Luca Lietti
Summary: In this study, we investigate the impact of different atmospheres and process conditions on the catalytic performances of Ru-and K/Ba-based dual-function materials for CO2 capture and methanation. Through experiments and spectroscopy analysis, we identify the effects of temperature, H2 partial pressure, water, and oxygen on the hydrogenation and CO2 adsorption steps. The findings provide valuable insights into the design improvement of DFMs for flue gas treatment.
Article
Chemistry, Physical
Vittoria Troisi, Veronica Piazza, Alessandro Stagni, Alessio Frassoldati, Gianpiero Groppi, Alessandra Beretta
Summary: Investigating bioethanol as a renewable energy source is crucial in the context of H2-based economy. A combined homo-heterogeneous kinetic scheme was developed and validated against experimental data to capture the relevant features of the bioethanol partial oxidation and steam reforming processes. The study developed a 36-species reduced homogeneous scheme and a macro-kinetic heterogeneous scheme with six molecular reactions to accurately describe the reacting systems.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Abdelrahman Mostafa, Irene Rapone, Aldo Bosetti, Matteo C. Romano, Alessandra Beretta, Gianpiero Groppi
Summary: In this study, methane sorption enhanced reforming (SER) is investigated as a promising route for blue H2 production. A 1-D dynamic heterogeneous model is developed to evaluate the thermal behavior of a fixed bed reactor under adiabatic conditions. The effects of feed gas temperature, initial bed temperature, and bed thermal capacity on the process performances are studied.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Umberto Iacobone, Isabella Nova, Enrico Tronconi, Roberta Villamaina, Maria Pia Ruggeri, Jillian Collier, David Thompsett
Summary: The modifications of ZCu(2+)(OH)(-) and Z(2)Cu(2+) ions during NH3-SCR on Cu-CHA catalysts are crucial for understanding the low-temperature redox SCR mechanism. The generation of dinuclear Cu2+ structures has been confirmed under representative conditions using a dry transient CO oxidation protocol. The presence of NH3 promotes the activity of ZCu(2+)(OH)(-) as the CO oxidation catalyst, while Z(2)Cu(2+) is inactive. An increase in Cu loading enhances CO2 production, indicating a larger population of ZCu(2+)(OH)(-) and a further enhancement is observed with the presence of H2O. The CO oxidation protocol proves to be a versatile technique for studying Cu2+ ions in Cu-CHA catalysts.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Nicole Daniela Nasello, Nicola Usberti, Umberto Iacobone, Federica Gramigni, Wenshuo Hu, Shaojun Liu, Isabella Nova, Xiang Gao, Enrico Tronconi
Summary: The reduction and oxidation half-cycles of low-temperature NH3-selective catalytic reduction (SCR) over a Cu-CHA catalyst were studied. The reduction half-cycle proceeds via second-order kinetics in CuII and with a stoichiometric relationship between CuII reduced and NO consumed. The oxidation half-cycle involves complete reoxidation of NH3-solvated Cu sites by O2 + H2O. The coupling of the kinetic models for reduction and oxidation accurately describes the steady-state SCR reactions and predicts various parameters consistent with experimental measurements.
Article
Engineering, Environmental
Claudio Ferroni, Mauro Bracconi, Matteo Ambrosetti, Gianpiero Groppi, Matteo Maestri, Enrico Tronconi
Summary: Cellular materials are potential alternatives to honeycomb monoliths for improving automotive DeNOx-SCR abatement efficiency. Computational Fluid Dynamics simulations are used to assess the performance of these innovative substrates in terms of pressure drop and abatement efficiency. The simulations reveal that a radial flow configuration of the reactor loaded with cellular materials can reduce the pressure drop and improve the abatement efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Abdelrahman Mostafa, Irene Rapone, Aldo Bosetti, Matteo C. Romano, Alessandra Beretta, Gianpiero Groppi
Summary: In this research, the potential of sorption enhanced steam reforming for utilizing gaseous streams recovered from biorefinery hydrogenation processes is explored. The mathematical model analysis highlights that H-2 dilution worsens the performance of sorption enhanced reforming, but increasing the heat capacity of the bed can improve the performance. The presence of C2+ hydrocarbons significantly improves the reformer's performance, increasing the conversion rate and purity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)
