Article
Multidisciplinary Sciences
Ayuta Kishimoto, Ryosuke Ohtsubo, Yuta Okada, Kenta Sugiyama, Hisataka Goda, Toshikazu Yoshikawa, Masahiro Kohno, Koji Fukui
Summary: With the spread of coronavirus infections, the demand for disinfectants like sodium chlorite solution has increased globally. However, the composition of sodium chlorite solutions and their bactericidal power are not well understood. This study aims to elucidate the composition of sodium chlorite solutions using spectroscopy and ion chromatography (IC) and found that commercially available sodium chlorite solution is 80% pure, potentially containing sodium hypochlorite solution. The research also discovered that the acidic sodium chlorite solution contains oxidizing species with an absorption peak at 365 nm.
Article
Engineering, Chemical
Yujie Hu, Guohua Ye, Qi Zuo, Wei Xiao, Xuanxiong Kang, Xueyin Liang, Siqin Zhu
Summary: A new method of ilmenite surface modification based on sodium chlorite activation using sodium oleate as a collector was developed. Sodium chlorite induced a chemical reaction on the surface of ilmenite, converting more Fe2+ to Fe3+ and strengthening the adsorption of sodium oleate. The activation of ilmenite by sodium chlorite significantly increased the number of active sites on the surface and improved the floatability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Agricultural Engineering
Qianlong Li, Yuriy Malyar, Aleksandr Kazachenko, Zhouyang Xiang
Summary: Xylans with naturally occurring acetylation play a vital role in the functionalities of plant cell walls and exhibit excellent dispersing properties applicable to fine chemicals and advanced materials. This study investigates the effects of different treatments on the dimethyl sulfoxide (DMSO) extraction of xylan from birch wood, including holocellulose production using sodium chlorite as the delignification method, solvent exchange, drying, and ball-milling. The findings provide valuable insights into the extraction and characterization of xylans, paving the way for further research and applications.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Engineering, Environmental
Junjie Qiu, Weiqiang Tang, Bo Bao, Shuangliang Zhao
Summary: In this study, a microfluidic approach was used to investigate the reaction kinetics of H2O2 decomposition, characterizing the reaction through changes in bubble volume. Kinetic models were established and experimental observations were in good agreement with theoretical calculations. This method provides a rapid and accurate way to study liquid-to-gas decomposition reactions, beneficial for reaction optimization involving H2O2.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Zhihe Zhang, Lili Ye, Xiaodong Wang, Xionggang Wu, Wei Gao, Jizhen Li, Mingshu Bi
Summary: Recent studies explore the challenging accurate description of the reaction mechanisms in fast pyrolysis of 1,3,5trinitro-1,3,5-triazinane (RDX). This work investigates the pyrolysis mechanism of RDX using ab initio kinetic calculations and modeling simulations, revealing that decomposition mainly occurs through N-NO2 bond fission and C-H beta-scission. Interestingly, the secondary intermediate INT175 plays a significant role in the decomposition of RDXR.
COMBUSTION AND FLAME
(2022)
Article
Engineering, Multidisciplinary
Ahmed S. Elmannaey, Hala E. E. Fouad, Youssef G. Youssef
Summary: This paper aims to investigate the feasibility of stabilizing swelling soil using only sodium silicate, and the results show that using 10% sodium silicate alone can successfully improve the soil's mechanical characteristics and eliminate its swelling potential.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Chengyang Cao, Huimin Liu, Dan Zhang, Kai Zhu, Aijun Li, Linling Wang, Hongyun Hu
Summary: This study investigates the impact of two metal oxides on the decomposition mechanism and kinetic behavior of 5-AT solid propellants. It was found that the metal oxides have different effects on the decomposition of 5-AT, influencing the formation and decomposition of condensation products. The findings contribute to understanding the mechanism of burn-rate reduction by coolants in 5-AT propellants.
Article
Chemistry, Physical
Xuefeng Wang, Haeseong Jang, Shangguo Liu, Zijian Li, Xuhao Zhao, Yunfei Chen, Min Gyu Kim, Qing Qin, Xien Liu
Summary: An acid-stable Ru solid solution oxide catalyst with Bronsted acid sites and enhanced electron transfer from W to Ru has been developed to improve the catalytic activity and long-term stability of the oxygen evolution reaction (OER) in acidic conditions.
ADVANCED ENERGY MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Aleksandr Stankevich, Svetlana G. Tolshchina, Anna Korotina, Gennady L. Rusinov, Irina Chemagina, Valery N. Charushin
Summary: This study presents research data on the mechanisms, kinetics, and thermodynamics of decomposition of three high-energy compounds, and determines the activation and induction energies for the decomposition stages. The formation of nanostructured carbon nitride and cyanogen in the decomposition products is observed. The study also provides information on the heat resistance and thermal safety of the compounds.
Article
Energy & Fuels
Ivaylo Tankov, Zilya Mustafa, Radoslava Nikolova, Anife Veli, Rumyana Yankova
Summary: This study investigates the kinetics and thermodynamics of biodiesel synthesis using various protic ionic liquids as catalysts. The acidity and internal hydrogen bonding extent of the ionic liquids were found to be directly related to the rate of biodiesel production. Optimal conditions for the process were determined by analyzing the reaction temperature, reactants molar ratio, and catalyst loading.
Article
Chemistry, Physical
Jung Su Lee, Hashikaa Rajan, Maria Christy, Sung Chul Yi
Summary: The Co-decorated nitrogen and sulfur co-doped carbon nanostructures (Co-NSC) exhibit high catalytic activity for oxygen reduction reactions, aiming to replace expensive commercial Pt catalysts. The sulfur co-doping dramatically enhances intrinsic catalytic activity, with variation in sulfurization degree influencing overall catalytic performance. Co-NSC 200 with high sulfur doping shows improved onset potential and current density, making it a promising PGM-free catalyst option.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Peiyao Wen, Yong Xu, Junhua Zhang
Summary: Alkali incubation improved the xylan hydrolysis efficiency of SC-pretreated poplar, leading to higher yields of glucose and xylose. The reduction of lignin and chlorine contents, as well as the decrease in cellulase loading, contributed to the increased sugar yields.
Article
Materials Science, Ceramics
Jin Goo Lee
Summary: Platinum (Pt) is widely used in catalytic applications such as oxygen-reduction reaction (ORR) in fuel cells. The challenge is to disperse Pt nanoparticles on support materials effectively. Metal ex-solution on perovskite oxide is considered a promising approach, but it is difficult to incorporate Pt into perovskite lattices due to its thermal unstability. In this study, we developed a facile synthesis method mediated by NaNO3 to prepare Pt-doped CaTiO3, which exhibited comparable catalytic activities for ORR in acidic media to conventional Pt/C catalysts.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
I. U. Nkole, S. O. Idris, I. Abdulkadir, A. D. Onu
Summary: The redox reaction between bis-(2-pyridinealdoximato)dioxomolybdate(IV) complex, [MoIVO2(paoH)2]2-, and thiosulphate ion (S2O32-) exhibits different rates in different media. The reaction is slower in acidic medium compared to surfactant (CTAB) medium. It is a first-order reaction with respect to both reactant concentrations, and second-order overall. The products formed are molybdenum(II) ion and tetrathionate ion.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Zhidan Diao, Peijun Yang, Yiqing Wang, Mingtao Li, Hui Jin, Shaohua Shen
Summary: In this study, a NH4Cl-assisted annealing strategy was developed to prepare chlorine-doped spongiform TiO2/C composite (ZATC-Cl) as an anode material for sodium-ion battery. The ZATC-Cl exhibited excellent sodium storage performance, with high reversible capacity, superior rate capability, and considerable high-rate cycling performance. The unique spongiform structure and ultra-small sized TiO2 particles in ZATC-Cl enabled fast sodium-ion insertion/extraction and rapid sodium-ion diffusion kinetics. The Cl dopants introduced in ZATC-Cl provided more active sites for robust sodium-ion chemical adsorption, optimizing sodium-ion reaction thermodynamics.
CHEMICAL ENGINEERING JOURNAL
(2022)
