Article
Chemistry, Applied
Xinfei Chen, Luwen Wang, Yan Lin, Tao Zeng, Zhen Huang, Yongqi Zhang, Ya Xiong, Jun Li, Lisheng Deng, Hongyu Huang
Summary: Ca2Fe2O5/Zr0.5Ce0.5O2 exhibited excellent reactivity in chemical looping dry reforming of methane. The migration of lattice oxygen during redox process was explored, revealing the release of lattice oxygen, structural change, and crystalline phase transformation. The understanding of oxygen migration provides a reference for improving the cyclic stability of Ca2Fe2O5/Zr0.5Ce0.5O2.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Thermodynamics
Feng Liu, Jing Liu, Yu Li, Ruixue Fang, Yingju Yang
Summary: The study found that spinel NiFe2O4 can be directly reduced into Ni-Fe alloy in CO atmosphere, with a reaction rate two times faster than Fe2O3. Factors such as reaction temperature, CO concentration, and heating rate can enhance the reactivity of NiFe2O4. The reactivity of lattice oxygen in NiFe2O4 is primarily influenced by the coordination environment of oxygen formed by different Ni/Fe atoms.
Article
Chemistry, Physical
Da Song, Yan Lin, Kun Zhao, Zhen Huang, Fang He, Ya Xiong
Summary: This study investigated the migration mechanism of lattice oxygen in the process of chemical looping dry reforming using NiFe2O4 as the oxygen carrier. The results clarified the release and diffusion paths of lattice oxygen during CO2 resourceful utilization. The findings provide reference and basis for the further development and design of chemical looping dry reforming technology using spinel oxygen carriers.
Review
Energy & Fuels
Dunyu Liu, Chaoran Wang, Yunpei Fan, Qiuqi Liu, Xudong Wang, Kailong Xu, Jing Jin, Jingjing Ma, Jinchen Ma
Summary: Chemical looping combustion (CLC) of coal for carbon capture utilization and storage is an effective technology to reduce carbon emission. However, there is uncertainty in mercury emission from both air and fuel reactor. This paper aims to reveal the mechanisms for the transformation of mercury-related species.
Article
Chemistry, Applied
Li Yang, Dan Zhu, Xin Wu, Chen Song, Caifu Li, Fang Liu, Zhengchang Song
Summary: Chemical looping combustion relies on high performance oxygen carriers (OCs). Iron-based OCs have excellent overall properties, but the disadvantage of low reduction reactivity limits their application prospects. Clarification of oxygen transfer pathways and bulk phase properties is essential to improve oxygen transfer rates and increase the reactivity of OCs.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Applied
Dingshan Cao, Cong Luo, Wenting Xing, Guoqiu Cai, Tong Luo, Fan Wu, Xiaoshan Li, Liqi Zhang
Summary: Coal-direct chemical looping hydrogen generation (CDCLHG) is a novel process that directly produces H-2 from coal and captures CO2. In this study, perovskite oxygen carriers were synthesized and BaMnO3 was found to be the optimal oxygen carrier for CDCLHG, achieving high H-2 gas production with a high H-2 gas production rate. The BaMnO3-delta obtained during the reaction process showed the conversion of lattice oxygen to carbonate oxygen and can recover its initial structure.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Zhiyu Li, Xiaoshan Dong, Beibei Yan, Jian Li, Jian Wang, Liguo Jiao, Guanyi Chen, Sarwaich Ahmed, Yan Cao
Summary: This study investigates the crucial properties of oxygen carriers (OC) in chemical looping gasification and finds that LaCu0.5Fe0.5O3 exhibits the best gasification performance. The stability of OC is also evaluated through cyclic experiments.
Review
Thermodynamics
Zhao Sun, Christopher K. Russell, Kevin J. Whitty, Eric G. Eddings, Jinze Dai, Yulong Zhang, Maohong Fan, Zhiqiang Sun
Summary: This paper provides an overview of the state-of-the-art schemes for selective synthesis of valuable chemicals via lattice oxygen-induced redox looping. It discusses various applications such as methane oxidation, oxidative coupling of methane, oxidative steam reforming of alcohols, and oxidative dehydrogenation of hydrocarbons. The study also proposes potential approaches and provides an overview of advanced oxygen carrier material design, preparation, and characterization.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
Article
Energy & Fuels
Fang Liu, Jiangyuan Zhao, Guohui Xuan, Fan Zhang, Li Yang
Summary: The reactivity of oxygen carriers in chemical looping technology is crucial, and understanding the spatial evolution of active components and lattice oxygen migration during reduction reaction is essential. Experimental and theoretical studies in this research have shown that as the reduction reaction progresses, lattice oxygen is gradually depleted, leading to an increase in Cu-0 and Fe2+ content.
Article
Green & Sustainable Science & Technology
Yu Guan, Yinhe Liu, Bo Wang, Yiwei Feng, Qiang Lyu
Summary: Chemical looping gasification (CLG) is a potential and clean way to utilize solid fuels with CO2 separation. This study synthesized Fe2O3-Al2O3, CaSO4-Al2O3, and Fe2O3/CaSO4-Al2O3 oxygen carriers (OCs) and applied them in semi-coke chemical looping gasification (SCCLG) for syngas production. The results showed that Fe2O3/CaSO4-Al2O3 had a higher syngas yield compared to the other OCs tested at a certain reaction condition. Additionally, the reaction mechanism of SCCLG was proposed based on experimental methods and calculations.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Chengrui Wang, Yanhong Fang, Zhenghao Wang, Mujun Long, Dengfu Chen, Huamei Duan, Yandong Li, Guoquan Zhang
Summary: The performance and mechanism of methane chemical looping partial oxidation (CLPOM) to syngas using Ce2(SO4)3 were explored. Ce2(SO4)3 showed excellent syngas selectivity and appropriate reaction conditions, achieving high methane conversion. The migration of lattice oxygen on the Ce2(SO4)3 surface played a crucial role in inhibiting carbon deposition and promoting methane conversion and syngas generation.
Article
Thermodynamics
Shiwen Fang, Zhengbing Deng, Yan Lin, Zhen Huang, Lixing Ding, Lisheng Deng, Hongyu Huang
Summary: This study explores the nitrogen migration law and control methods of nitrogen pollutants in the process of chemical looping gasification, providing important references for reducing nitrogen emissions.
Article
Environmental Sciences
Jingjing Ma, Jiameng Hu, Huifen Kang, Ziheng Han, Qingjie Guo
Summary: We studied the migration and transformation behavior of selenium during coal chemical looping gasification (CLG) using a CuO/Bentonite oxygen carrier (OC) in a batch fluidized bed reactor. Our results showed that the addition of CuO/Ben OC promoted the transformation of gaseous selenium to particulate selenium. The oxygen-carbon ratio (O/C) played a crucial role in determining the fraction of gaseous selenium released during the gasification process. X-ray photoelectron spectroscopy characterization revealed the presence of a small amount of Cu2Se in the reduced CuO/Ben OC, indicating its good regeneration performance.
Article
Energy & Fuels
Richard A. Newby, Dale L. Keairns, Robert W. Stevens
Summary: The objective of this study was to estimate the cost of commercial production of oxygen carriers (OCs) for large-scale application in the chemical looping combustion (CLC) power generation industry. Two production facility scenarios were considered, and two OC production techniques were addressed. The estimated OC product costs can be used to guide development and determine the maximum OC makeup rate for achieving a designated cost-of-electricity (COE) reduction goal.
Review
Energy & Fuels
Guicai Liu, Grzegorz Lisak
Summary: This review summarizes the basic properties and opportunities of Cu-based OCs in various chemical looping processes. It covers the applications of Cu-based OCs in chemical looping combustion (CLC), chemical looping oxygen uncoupling (CLOU), chemical looping air separation (CLAS), chemical looping for syngas/H2 production, integrated CaO/CuO looping process, and thermochemical energy storage (TCES). The review also discusses the technical challenges and current strategies related to agglomeration, attrition, and ash accumulation. It provides insights and guidance for the design and development of Cu-based OCs and their applications in chemical looping processes.
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)