Article
Engineering, Chemical
Raimund Walter, Jens Neumann, Olaf Hinrichsen
Summary: A new global kinetic model for cGPFs is proposed, considering the impact of lean-rich cycling, and accurately predicts tailpipe emissions in a worldwide harmonized light vehicles test procedure driving cycle after calibration on a specially equipped dynamic engine test bench.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
S. Pausova, L. Pacileo, M. Baudys, A. Hrubantova, M. Neumann-Spallart, D. Dvoranova, V Brezova, J. Krysa
Summary: This study describes the preparation and characterization of active carbon-titania composites with different AC/TiO2 ratios, and compares their adsorption ability and photocatalytic activity. The results show that composites prepared from milled AC exhibit better adhesion and higher removal ability of benzoic acid in aqueous phase, and show similar or higher photocatalytic activity compared to TiO2.
Article
Chemistry, Physical
Lyumeng Ye, Peng Lu, Xianhui Yan, Haibao Huang
Summary: MnOx-CeO2 supported on TiO2 nanotube (MnCe/TNT) were tailored to achieve simultaneous removal of NOx and toluene via low temperature NH3-SCR. The catalyst exhibited high conversions of NO and toluene with more than 90% N2 selectivity. Strong Lewis acidity and oxygen vacancies were generated by the interaction of Mn3+ + Ce4+ shifting to Mn4+ + Ce3+ and enhanced by the TiO2 nanotube, facilitating NH3-SCR and toluene activation. The high N2 selectivity was attributed to the suppression of NH3 oxidation and N2O formation by the consumption of adsorbed oxygen via toluene decomposition.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Environmental Sciences
David Murindababisha, Abubakar Yusuf, Yong Sun, Chengjun Wang, Yong Ren, Jungang Lv, Hang Xiao, George Zheng Chen, Jun He
Summary: This paper reviews the recent progress in catalysts for toluene oxidation and discusses the factors influencing their catalytic activities, as well as the reaction mechanisms and kinetics for catalytic oxidation of toluene.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Hongping Fang, Wenjun Liang, Liangang Ma, Chen Ma
Summary: In this study, red mud (RM) was modified using different acids and their catalytic efficiency and properties were evaluated. The results showed that HNO3-MRM had the highest catalytic efficiency and CO2 selectivity, and maintained stability at high temperatures. The catalytic activity was found to be related to the specific surface area, Fe3+ content, surface adsorbed oxygen content, and surface acidic sites of the catalyst. Two possible reaction paths were identified for the toluene oxidation over the HNO3-MRM catalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Environmental Sciences
Pijun Gong, Feng He, Junlin Xie, De Fang
Summary: Volatile organic compounds (VOCs) pose serious threats to human health and the ecological environment. Catalytic oxidation technology, due to its cost-effectiveness and high activity, is considered the most effective method for removing VOCs. This review summarizes the research progress in the catalytic oxidation of toluene using MnO2-based catalysts, including single MnO2, metal-doped MnO2, and supported MnO2 catalysts. The relationship between the chemical properties of MnO2 catalysts and toluene oxidation performance, as well as the catalytic reaction mechanisms, are focused on. Additionally, the effects of different crystal forms and morphologies on the catalytic toluene reaction are discussed, and the potential of MnO2 catalysts for the catalytic oxidation of toluene is proposed. The summary of these important findings is expected to serve as a valuable reference for the catalytic treatment of VOCs.
Article
Chemistry, Multidisciplinary
Yungang Wang, Xu Liang, Yanjun Dai, Li Zou, Dou Sun, Feixiang Li
Summary: In this study, a composite metal oxide catalyst Cu-x-Mn-y/SBA-15 was prepared by loading Cu and Mn on SBA-15 molecular sieve, and its catalytic performance in VOCs treatment was investigated. The results showed that the catalyst exhibited excellent catalytic activity and stability, achieving high toluene conversion rate.
Article
Green & Sustainable Science & Technology
Mahdi Bourassi, Gwendoline Lafaye, Bertrand Gombert, Petr Kluson, Jacques Barbier Jr
Summary: Conventional wastewater treatment plants cannot effectively eliminate emerging contaminants. Catalytic wet air oxidation provides a promising solution for treating concentrated active molecules. This study found that platinum supported on cerium oxide and mixed cerium and zirconium oxides can effectively degrade sulfamethoxazole and tetracycline.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Multidisciplinary
Gui Chen, Kuiyi You, Fangfang Zhao, Zhenpan Chen, Hean Luo
Summary: An inexpensive and controllable CeMnOx composite oxides catalyst was prepared for the liquid-phase catalytic oxidation of toluene using ultrasound-assisted co-precipitation method. The CeMnOx composite oxides catalyst showed good catalytic performance and provided a simple, benign, and controllable approach for the selective oxidation of toluene to valuable oxidation products.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Physical
Larisa V. Karpenko-Jereb, Victor A. Kovtunenko
Summary: This paper investigates the impact of varying operating conditions on the durability of polymer electrolyte membrane fuel cells in accelerated stress tests. The electrochemical degradation of the catalyst layer is caused by platinum ion dissolution and oxide coverage. A variable timestep implicit-explicit method is proposed for the efficient numerical solution of the nonlinear reaction-diffusion system. Computer simulations predict durability by linear extrapolation and a parameter sensitivity analysis evaluates the effect of specific parameter variations on platinum mass loss.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Organic
Masayuki Kirihara, Yugo Sakamoto, Sho Yamahara, Atsuhito Kitajima, Naoki Kugisaki, Yoshikazu Kimura
Summary: This study demonstrates the photoirradiation of toluene derivatives with two equivalents of bromine in benzotrifluoride-water to yield the corresponding benzoic acid derivatives with satisfactory yield. The reaction pathway might involve the dibromination of benzylic carbon, generation of benzylic radical through oxidative C-H abstraction, formation of benzoyl bromide, and hydrolysis of carboxylic acid.
Article
Chemistry, Physical
Shaohua Chen, Yu Hao, Rui Chen, Zhipeng Su, Tiehong Chen
Summary: The hollow multishelled spherical PrMnO3 perovskite exhibits high catalytic activity due to its high specific surface area, high molar ratio of Mn4+/Mn3+, improved low-temperature reducibility, and increased content of active oxygen species. Its excellent catalytic performance for CO and toluene oxidation is attributed to the unique structural and compositional characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Songlin Han, Yaqiu Tao, Yunfei Liu, Yinong Lu, Zhigang Pan
Summary: Porous LaFeO3 powders were obtained via high-temperature calcination of LaFeO3 precursors produced by hydrothermal treatment of corresponding nitrates in the presence of citric acid. Monolithic LaFeO3 was prepared by extrusion of four different LaFeO3 powders calcinated at different temperatures mixed with kaolinite, carboxymethyl cellulose, glycerol, and active carbon. The catalyst calcinated at 700 degrees C showed the best catalytic activity for the oxidation of toluene, with a catalytic rate of 36,000 mL/(g·h), and its superior performance was attributed to the larger specific surface area, higher oxygen adsorption, and larger Fe2+/Fe3+ ratio associated with LaFeO3 calcined at 700 degrees C.
Article
Chemistry, Physical
Juexiu Li, Ruiqin Zhang, Yue Liu, Tonghua Sun, Jinping Jia, Mingming Guo
Summary: Mn3O4-Fe2O3 composite catalysts were in-situ synthesized and modified with hydrochloric acid to improve the catalytic toluene oxidation performance. The Mn3O4-Fe2O3 modified with 1.0 M HCl (A-1.0) showed the best activity with a 50% toluene conversion temperature of 245 degrees C and a 90% conversion temperature of 279 degrees C. The A-1.0 catalyst had more abundant surface lattice oxygen species and higher amounts of high valence manganese and iron ions, which were beneficial for improving catalytic activity. In-situ DRIFTs indicated that benzaldehyde and benzoic acid were the main intermediate products during toluene oxidation on the A-1.0 catalyst.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Shuangju Li, Li Xu, Chao Feng, Qingyang Li, Junxiang Jiang, Daotong Liang, Panting Zhang, Chuanhui Zhang, Xuebing Li, Zhong Wang
Summary: Co-based catalysts have attracted attention for their excellent catalytic activity. Co catalysts supported on Nb2O5 showed the best activity and stability. The unique properties of monoclinic Nb2O5 supported the strong interaction between Nb2O5 and Co3O4, leading to enhanced adsorption and activation ability of toluene and oxygen molecules on the catalyst. This study reveals the support effect of Co supported catalyst, which has guiding significance for industrial application.
JOURNAL OF MOLECULAR LIQUIDS
(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)