Article
Chemistry, Analytical
Dongsen Zheng, Jianzhong Wang, Yingxian Duo, Zhuqing Fang, Chuang Yu, Meizhuang Qiao, Jiping Liu
Summary: This paper focuses on the pyrolysis behavior of 5-amino-1 H-tetrazole (5AT) and investigates the catalytic effects of nitrocellulose (NC) and potassium nitrate (KNO3) on the thermal decomposition mechanism and kinetics behavior of 5AT. The results suggest that adding NC simplifies the degradation process of 5AT and KNO3 decreases the activation energy and changes the reaction model. These findings provide valuable guidance for improving the design of environmentally friendly pyrotechnics.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Applied
Dongsen Zheng, Jianzhong Wang, Yinxian Duo, Jiping Liu
Summary: This paper investigates the catalytic effects of different types of oxidizers on 5-Amino-1H-tetrazole (5AT). The thermal behavior and activation energy of 5AT are analyzed using TG-DSC test and Kissinger/Ozawa methods. The experimental results show that 5AT-AN has the lowest activation energy and the degradation process is simplified into one step. The addition of AP, NaClO4, and MnO2 can promote the pyrolysis process of 5AT, while Cr2O3 mainly acts as a catalyst above 400 degrees C without oxidation. The catalytic mechanism of Cr2O3 mainly involves polyaddition and ring-opening reactions of N-containing heterocycles. These findings offer valuable guidance for understanding, designing, and using 5AT-based propellants.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2023)
Article
Energy & Fuels
Jiu Chen, Quan Liu, Xian-Zhao Song, Si-Yuan Zhou, Bin Li, Li-Feng Xie, Guang-Cheng Yang, Cheng-Yan Cao, Song Lu, Dan Zhang
Summary: This study investigates the thermal decomposition behavior of 5-Amino-1H-Tetrazole (5AT) and the catalytic effect of different catalysts on its pyrolysis. The results indicate that PbO catalyst exhibits the best catalytic effect. Furthermore, the likely pyrolysis route of 5AT is inferred through the analysis of evolved gas products.
Article
Chemistry, Inorganic & Nuclear
Hanieh Gharoubi, Mahmoud Nasrollahzadeh, Zahra Khorsandi, Marcos A. L. Nobre, Sungkyun Choi, Benjamin Kruppke, Hossein Ali Khonakdar
Summary: A new catalyst based on Cu(II)-5-amino-1H-tetrazole complex immobilized on graphene oxide-modified magnetic nanoparticles has been synthesized. The catalyst showed high catalytic activity in the synthesis of N-benzyl-N-aryl-5-amino-1H-tetrazoles. It has excellent chemical stability and the potential for practical synthetic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Energy & Fuels
Jiu Chen, Bin Li, Cheng-Yang Cao, Si-Yuan Zhou, Li-Feng Xie, Dan Zhang
Summary: This study investigates the pyrolysis behaviors of 5-Amino-1H-Tetrazole (5AT) and the effects of different modification methods on its combustion properties. The results show that boron powder and copper powder have different catalytic effects on the decomposition of 5AT at different stages. The solution recrystallization method exhibits better modification effect in the later stages, while copper powder shows a stronger catalytic effect compared to boron powder. These findings provide valuable guidance for the understanding and applications of 5AT-based propellants.
Article
Engineering, Chemical
Sara A. Mahdy, Soha A. Abdel-Gawad, Rabab M. El-Sherif, I. M. Ghayad
Summary: The performance of 5-phenyl-1H-tetrazole (PTAH) and 5-(4-pyridyl)-1H-tetrazole (PyTAH) as corrosion inhibitors on copper and commercial brass in simulated seawater containing 3.5% NaCl was investigated. The results showed that PTAH exhibited better corrosion inhibition efficiency with 97% for copper and approximately 96% for brass at an optimal concentration of 0.01 M. Surface investigations revealed that the presence of PTAH significantly protected the copper and brass surfaces. The Langmuir adsorption isotherm indicated physiochemical adsorption of the inhibitors on the sample surfaces, while the Arrhenius plot demonstrated an increase in corrosion reaction activation energy after the addition of the inhibitor, indicating its inhibitive effect on copper and brass surfaces.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Crystallography
Haolong Zhai, Xiaoping Cui, Yuping Gan
Summary: This study focuses on the combustion tear gas mixture and optimizes its formula by adding 5-amino-1H-tetrazole. The study characterizes the combustion parameters and smoke effects of the mixture and finds that adding an appropriate amount of 5-amino-1H-tetrazole can improve its combustion and smoking performance.
Article
Chemistry, Multidisciplinary
Jaspreet Kour, Monika Gupta, Neha Sharma
Summary: A series of 2-amino-4H-chromenes and 5-substituted-1H-tetrazoles were efficiently synthesized using ethylenediamine functionalized cellulose acetate as a solid base catalyst. The catalyst is characterized by FTIR, TGA, SEM, and TEM. The new catalytic method offers advantages of short reaction time, high yields, easy workup, and simple preparation method, making it more useful for synthesizing chromene and tetrazole derivatives compared to earlier methods.
Article
Chemistry, Medicinal
Nazariy Pokhodylo, Nataliya Finiuk, Olha Klyuchivska, Rostyslav Stoika, Vasyl Matiychuk, Mykola Obushak
Summary: In this study, a novel N-(5-benzylthiazol-2-yl) amide compound 3d was designed and synthesized. It exhibited significant anticancer activity against various tumor cell lines, particularly chronic myeloid leukemia cells. Compound 3d also caused DNA damage and induced apoptosis in leukemia cells.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Neda Taherzad, Leila Kafi-Ahmadi, Ahmad Poursattar Marjani
Summary: In this study, M-x-MoO3-alpha-NaFe2(MoO4)(3)-alpha-FeMoO4 nanomaterials were synthesized by the hydrothermal method. Characterization and analysis of the synthesized samples were performed using XRPD, FESEM, TEM, BET-BJH, UV-Vis, and VSM. Rietveld analysis revealed the presence of alpha-NaFe2(MoO4)(3), alpha-FeMoO4, MoO3, and Fe2O3 crystal phases. UV-Vis spectra showed a small direct band gap energy in the range of 1.3-1.5 eV. VSM analysis confirmed the magnetic properties of the samples, with Ni doping resulting in ferromagnetic behavior. Catalytic synthesis of 5-aryl-1H-tetrazole analogs was successfully performed under various conditions, with ethyl alcohol as the most efficient solvent.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Mahmoud Nasrollahzadeh, Raziyeh Bakhshali-Dehkordi, Taghi A. Kamali, Yasin Orooji, Mohammadreza Shokouhimehr
Summary: This study presents the synthesis of a Fe3O4-CS@tet-Pd(II) catalyst for the Suzuki-Miyaura cross-coupling reaction, achieving high yields of biaryl compounds. The catalyst shows high efficiency, recyclability, ease of separation, and simplicity in operation, making it a promising tool for chemical transformations.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Dariush Khalili, Roya Evazi, Abdollah Neshat, Jasem Aboonajmi
Summary: The catalytic activity of a series of copper(I) complexes containing dihydrobis(2-mercapto-benzimidazolyl) borate (Bb) and phosphine co-ligands was investigated in the synthesis of N-heterocycle compounds. The introduced catalyst displayed high catalytic activities for the formation of 2H-indazoles and 1H-tetrazoles, requiring easy handling processes. The reactions were successfully performed at low catalyst loadings in either PEG-200 or DMF, showing potential for large-scale production of N-heterocycle compounds.
Article
Chemistry, Inorganic & Nuclear
Ling Qin, Qi-Ming Zheng, Hao Shen, Peng-Cheng Zeng, Huan-Jun Zhu, Xi Yang, Yan-Qing Wang, Yong-Liang Zhang, Ming-Dao Zhang
Summary: The synthesized luminescent Cd2+ coordination polymer is a 3D framework with a 3,6-connected rtl topology. It has been shown to be an excellent multi-functional probe for metal ions and amino acids through fluorescence titration experiments.
JOURNAL OF COORDINATION CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Ekaterina A. Ermakova, Julia A. Golubeva, Ksenia S. Smirnova, Lyubov S. Klyushova, Ilia V. Eltsov, Alexander A. Zubenko, Leonid N. Fetisov, Alexandra E. Svyatogorova, Elizaveta V. Lider
Summary: In this study, five new mixed-ligand zinc(II) complexes were synthesized using 1H-tetrazole-5-acetic acid as a bifunctional ligand in the presence of secondary ligands. The complexes were characterized by elemental analysis, IR spectroscopy, and powder X-ray diffraction. Thermogravimetric analysis showed that all complexes exhibited thermal stability up to 250 degrees C. Among them, complex 2 showed the highest cytotoxicity against HepG-2 and MCF-7 cells.
Article
Chemistry, Organic
Masahiko Seki, Yusuke Takahashi
Summary: Highly convergent synthesis of angiotensin II receptor blockers has been achieved through late-stage C-H arylation using functionalized aryl bromides. Different reaction conditions were found to lead to distinct coupling products during the arylation reaction.
SYNTHESIS-STUTTGART
(2021)
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.