Article
Energy & Fuels
Ze Fang, Zhiguo Zhao, Nan Li, Zhexin Zhu, Wangyang Lu, Fengtao Chen, Wenxing Chen
Summary: An environmentally friendly desulfurization technology was developed using a biomimetic catalytic system, ethanol and water solvent, achieving a high removal rate of dibenzothiophene. The research provides a new idea for the design of efficient, energy-saving, and environmentally friendly desulfurization systems.
Article
Engineering, Chemical
Marzieh Shams Harandi, Esmaeil Shams, Ensiyeh Sharifi, Fariborz Momenbeik
Summary: An extraction-electrooxidation system was introduced for the removal of dibenzothiophene from model fuel, achieving 100% removal efficiency. The method utilizes a polar solvent and electrochemical medium, demonstrating feasibility and innovation for deep desulfurization of liquid fossil fuels.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Fina J. Lesafi, Tatiana Pogrebnaya, Cecil K. King'ondu
Summary: A novel SnO2-MoO3 catalyst was synthesized for oxidative desulfurization of fuel, showing excellent catalytic activity and reusability.
Article
Engineering, Chemical
Yadollah Tavan, Fatola Farhadi, Mohammad Shahrokhi
Summary: The study utilized electrochemical oxidative desulfurization technique to reduce the sulfur content of crude diesel, with kinetic study showing a second order reaction rate. Dimethyl sulfoxide was selected as the solvent for desulfurization extraction, with research indicating that low solvent flow rate can improve extraction efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Hang Xu, Jun Zhang, Dandan Zhang, Yafei Guo, Fengmin Wu
Summary: The silica gel supported ionic liquid ([Bmim]CoCl3) catalyst, prepared using a sol-gel method and coupled with [Bmim]BF4 and oxone, showed high desulfurization efficiency. The catalyst exhibited good recyclability and effective desulfurization performance on three sulfur-containing substances with high sulfur content. The desulfurization mechanism was speculated based on the GC-MS results.
Article
Energy & Fuels
Xiaoyu Zhou, Hang Liu, Sixiao Liu, Lei Zhang, Tianyi Wang, Chengyin Wang, Dawei Su
Summary: By using the α-Fe2O3/g-C3N4/HNTs composite material, efficient photocatalytic desulfurization of dibenzothiophene in model oil under visible light can be achieved. The unique structure of the composite material promotes the transfer and separation of photogenerated carriers, thereby enhancing the efficiency of photocatalytic reactions.
Article
Chemistry, Physical
Yue Liu, Jing-zhi Tian, Yong-jie Zheng, He-shan Zheng, Shuo Li, Tao Jing, Hong-rui Zhang, Jing-ying Shao
Summary: A core-shell porous catalyst coated with TiO2-fibrous silica (KCC-1) was prepared and showed excellent catalytic desulfurization performance. The unit desulfurization rate was significantly improved without additional oxidants. The adsorption-catalysis-resorption desulfurization system was effective, enhancing the reaction rate and achieving selective adsorption and coupling desulfurization. Furthermore, the spent catalyst could be regenerated without a decrease in desulfurization rate.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Jingwen Li, Yanwen Guo, Junjun Tan, Bing Hu
Summary: A novel family of imidazole-based polyoxometalate dicationic ionic liquids catalysts were synthesized for efficient desulfurization of fuel oil, showing excellent desulfurization efficiency and recyclability. The possible mechanism of the ECODS process was proposed based on the catalytic performance under different conditions.
Article
Chemistry, Physical
Armin Raeisi, Alireza Najafi Chermahini, Marzieh Esmaeilzadeh Khabazi, Mohamad Mohsen Momeni, Rafael Luque, Antonio Pineda, Enrique Rodriguez Castellon, Carolina Vargas Fernandez
Summary: This investigation successfully removes sulfur-based compounds by a combination of absorptive and oxidative desulfurization processes using a series of novel Bi-based bifunctional photo electrocatalysts. The results showed that the catalysts had higher efficiency in absorptive desulfurization and better results in oxidative desulfurization. Among the catalysts, photoelectrocatalytic desulfurization performed best in dibenzothiophene removal.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Chemical
Jiaxin Tian, Zifei Yan, Jian Deng, Guangsheng Luo
Summary: A novel homogeneous oxidation method utilizing hydrogen peroxide catalyzed by phosphotungstic acid has been developed for the synthesis of high-quality 2,2'-dibenzothiazole disulfide (MBTS). This method improves reaction efficiency and product quality, solves organic wastewater treatment issues, achieves high purity product synthesis, and successfully recycles the mother liquor containing catalyst.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Environmental
Fariba Mohammadi Nejati, Shahrokh Shahhosseini, Mehran Rezaee
Summary: Researchers developed a sandwich-type polyoxometalate catalyst immobilized on magnetic graphene oxide, which showed high efficiency in removing sulfur compounds under suitable conditions. The catalyst also demonstrated good reusability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Suting Xie, Xinyu Zhao, Dongxiao Wang, Huawei Yang, Lixia Yang, Liangjiu Bai, Donglei Wei, Wenxiang Wang, Ying Liang, Hou Chen, Shaojun Guo
Summary: Photocatalytic aerobic oxidation desulfurization (PAODS) is a sustainable alternative for desulfurization, but current photocatalysts have limitations in generating reactive oxygen species and sulfide oxidation rate. Researchers have developed a MoOx nanocluster decorated Mo-doped TiO2 catalyst that efficiently promotes the photocatalytic oxidation of sulfides, achieving a record oxidation activity.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Applied
Chao Wang, Wei Jiang, Hanxiang Chen, Linhua Zhu, Jing Luo, Wenshu Yang, Guangying Chen, Zhigang Chen, Wenshuai Zhu, Huaming Li
Summary: In this study, Pt nanoparticles with sizes around 4-5 nm were effectively encapsulated on vanadium pentoxide nanosheets, resulting in a catalyst with excellent catalytic aerobic oxidation performance for deep desulfurization. The catalysts were able to be reused at least seven times, showing great potential for practical applications.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Ekaterina Eseva, Argam Akopyan, Anna Schepina, Aleksandr Anisimov, Anton Maximov
Summary: Anderson-type polyoxometalate (POM) catalysts were synthesized and applied for deep oxidative desulfurization of model fuel containing dibenzothiophene. The role of solvent in aerobic oxidative desulfurization was investigated, showing that alkyl peroxides from the solvent could be the key stage in the oxidation of sulfur-containing compound. This study provides insights into the mechanism of oxidative desulfurization and the potential application of POM catalysts in sulfur removal from fuel.
CATALYSIS COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Yu Liu, Jiabao Bai, Ya Song, Huawei Yang, Lixia Yang, Liangjiu Bai, Donglei Wei, Wenxiang Wang, Xinxiang Cao, Ying Liang, Hou Chen
Summary: Iron-intercalated molybdenum oxides nanobelts have been reported as a durable and robust catalyst for aerobic oxidative desulfurization, catalyzing the reaction efficiently at 80 degrees C by precisely modulating the electronic structure to increase surface oxygen vacancy density. The optimized doping amount enables the catalyst with excellent catalytic performance through thorough conversion of various sulfides, making it a candidate for sustainable fuel desulfurization. The strategy demonstrated here provides practical guidance for the rational design and optimization of Mo-based catalysts to promote aerobic oxidation reactions.
ACS APPLIED NANO MATERIALS
(2021)
Article
Environmental Sciences
Qicheng Qiao, Seema Singh, Ritesh Patidar, Lizhang Wang, Ya Li, Jian Shi, Vimal Chandra Srivastava, Shang-Lien Lo
Summary: The present study explored the roles of PDS radicals and SO4 center dot- radicals formed from SO42- during the electrochemical oxidation of PFOA. The study investigated the effects of different electrolytes, initial pH, current density, electrolyte dosage, and initial concentration of PFOA on the decomposition of PFOA using electrochemical oxidation. The results showed that (OH)-O-center dot induced oxidation and direct electron transfer reaction played a crucial role in the oxidation of PFOA.
Article
Engineering, Chemical
Nilambar Bariha, Deepak Kumar Ojha, Vimal Chandra Srivastava, Indra Mani Mishra
Summary: This article focuses on the analysis of risks associated with gas transfer operations in an LPG bottling plant in India. Due to urban expansion, these plants are now surrounded by residential and business areas. The frequency of transfer operations has also increased in order to maintain the supply chain. Accidental release of LPG during these operations can have severe consequences such as fire and explosions. The study classifies and analyzes the operations in various hazard zones and models the probability and consequences of accidents using tools like ALOHA and PHAST. The estimated thermal radiation can cause damage to nearby population and plant machinery.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2023)
Article
Chemistry, Multidisciplinary
Ananda Jaysing Jadhav, Vimal Chandra Srivastava
Summary: In spectrophotometry, it is challenging to determine the concentration of chemical constituents in mixtures due to spectral interferences and close lambda max wavelengths. This paper presents a model based on a genetic algorithm and partial least squares to estimate the concentrations of components in ternary synthetic mixtures. The model was verified using different mixtures, and the results showed improved accuracy with the genetic algorithm.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Polymer Science
Anuj Rawat, Raeesh Muhammad, Vimal Chandra Srivastava, Paritosh Mohanty
Summary: The hypercrosslinking of benzene using formaldehyde dimethyl acetal as the crosslinker, anhydrous ferric chloride as the catalyst, and 1,2 dichloroethane as the solvent for the synthesis of poly-benz is reported. Microwave-assisted synthesis resulted in the formation of nanoporous poly-benz with a specific surface area of 1168 m2 g-1 within 60 minutes. Thorough analysis using NMR and XPS revealed the hypercrosslinking at the meta position of the benzene ring. The synthesized poly-benz showed a high CO2 capture capacity of 65.3 wt % at 298 K and 30 bar, and different adsorption isotherm models were fitted to represent the equilibrium CO2 adsorption data at various temperatures.
Article
Chemistry, Multidisciplinary
Pabitra Mohan Mahapatra, Achyut Kumar Panda, Sahin Ahmed, Sachin Kumar
Summary: The thermal degradation kinetics of discarded Bakelite were investigated using various model fitting and model-free methods, including KAS, FWO, FRM, STR, LTA, VYZ, AVM, and the Master plot. The kinetics triplets (A, Ea, and n) were calculated to determine a suitable mechanism. The thermal degradation experiment was conducted at different heating rates and under an inert gas atmosphere. The results showed that the thermal degradation of discarded Bakelite followed an order-based F-5 model mechanism with an activation energy of 213 KJ/mol. The accuracy of the activation energy was confirmed by KAS, FWO, and VYZ iso-conversional methods.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Indra Mohan, Abhisek Sahoo, Sandip Mandal, Sachin Kumar
Summary: In this study, the thermal properties of Phoenix dactylifera and Phyllanthus emblica seeds were analyzed to determine their potential as pyrolysis feedstocks. Kinetic modeling and artificial neural network (ANN) modeling were used to predict the best fitting for the seeds. The results showed that these waste biomass seeds could be used to obtain liquid fuels and valuable chemicals, contributing to a circular economy and reducing environmental degradation.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Green & Sustainable Science & Technology
Priyankesh Kumar, Devesh Kumar, Ravi Shankar, Sachin Kumar, Prashant Saini, Narendra Kumar
Summary: This study prepared biodiesel from lemongrass oil through transesterification process and characterized its properties. Blending mixtures of biodiesel and fossil diesel at different proportions were tested for performance and emission. The results showed that the blend with 20% biodiesel had the best performance and emission characteristics.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Green & Sustainable Science & Technology
Satya Prakash Pandey, Satish Kumar Singh, Achyut K. Panda, Sandip Mandal, Sachin Kumar
Summary: TiO2 nano particles synthesized through the sol-gel technique were successfully employed for catalytic pyrolysis of Argemone mexicana seed, resulting in increased bio-oil yield and improved product quality. Furthermore, the bio-char also showed potential for further applications.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Green & Sustainable Science & Technology
Tanveer Rasool, Vimal Chandra Srivastava, Pratik Toshniwal, Ishfaq Najar, Vikash Singh
Summary: This study evaluated the kinetic and thermodynamic parameters of co-pyrolysis of wood pellets and petroleum coke blends. It was found that the reaction order increases with increasing heating rate, and the average activation energy was calculated to be 119.6 kJ mol-1 (OFW) and 126.2 kJ mol-1 (KAS). The values for ΔH, ΔG, and ΔS were consistent with previous studies, and ΔG was observed to be around 182 kJ mol-1. The study also identified the mechanisms of diffusion and chemical reaction during the thermal degradation process.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Materials Science, Multidisciplinary
Seema Singh, Ritesh Patidar, Vimal Chandra Srivastava, Praveen Kumar, Ajay Singh, Shang-Lien Lo
Summary: In this study, ellipsoid-shaped cupric oxide (CuO) nanoparticles were synthesized using a simple hydrothermal method and subsequent heat treatment. The catalysts showed excellent peroxymonosulfate (PMS) activation ability for the degradation of perfluorooctanoic acid (PFOA). Various operating parameters were investigated, and it was found that singlet oxygen (1O2) played a key role in the oxidative-reductive mechanism of PFOA degradation. Additionally, a two-step pseudo-first-order kinetic model was proposed and minimal metal leaching was observed after repeated use.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Green & Sustainable Science & Technology
Anuj Rawat, Raeesh Muhammad, Raj K. Singh, Pratiksha Rashmi, Pratiksha Joshi, Om P. Khatri, Vimal Chandra Srivastava, Paritosh Mohanty
Summary: A sustainable method using high surface area nanoporous adsorbents synthesized from polycyclic aromatic hydrocarbons (PAHs) effectively removes polycyclic aromatic sulphur heterocycles (PASHs) from fuels. By hypercrosslinking PAHs through a microwave assisted method, nanoporous polymeric materials with high surface area (SABET of 620-1565 m2 g-1) are synthesized. The adsorbent poly-naph (highest SABET, i.e., 1565 m2 g-1) demonstrates excellent desulphurization performance from batch to fixed bed column mode. The adsorption mechanism is attributed to the π-electron density in the polymeric framework and the high surface area. This approach requires technological advancement, financial assistance and governmental regulation to sustain the control of carcinogenic aromatic pollutants.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Sarvesh Namdeo, Vimal Chandra Srivastava, Paritosh Mohanty
Summary: This study used six supervised machine learning models to understand and predict the CO2 adsorption mechanism and uptake, with the GBDT model outperforming the others. The SHAP method was employed to explain the relationships and provide feature importance analysis. This research is of great significance for the development of CO2 adsorption and prediction methods.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Vikash Singh, Seon Yeong Park, Eun Seo Lee, Jun Ho Choi, Chang Gyun Kim, Vimal Chandra Srivastava
Summary: The co-combustion characteristics and synergy of distillery effluent sludge (DES) and sugar mill waste (SMW) were studied by thermogravimetric analysis. The blend of 25% DES and 75% SMW exhibited optimal combustion parameters and the presence of Fe, Ca, and Mg in DES facilitated effective combustion. The ash from the combustion process can be considered as a possible supplementary cementing material.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Engineering, Environmental
Seema Singh, Praveen Kumar, Ritesh Patidar, Vimal Chandra Srivastava, Shang-Lien Lo, Urska Lavrencic Stangar
Summary: In this study, Co3O4 nanospheres with excellent surface properties were synthesized and used for the degradation of BPA. The nano-Co3O4/PMS system effectively degraded BPA (approximately 92%) at neutral pH with low cobalt leaching and good recyclability. Chemical quenching studies confirmed the involvement of hydroxyl radicals and sulfate radicals in BPA oxidation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Seema Singh, Ritesh Patidar, Vimal Chandra Srivastava, Qicheng Qiao, Praveen Kumar, Ajay Singh, Shang-Lien Lo
Summary: This study synthesized low-toxicity and eco-friendly spherically shaped manganese oxides (alpha-MnO2, Mn2O3, and Mn3O4) using the chemical precipitation method. The variable oxidation states and diverse structures of manganese-based materials have a strong impact on electron transfer reactions. The as-prepared manganese oxides (MnOx) exhibited excellent catalytic activity for the degradation of rhodamine B (RhB) organic pollutant in the presence of peroxymonosulfate (PMS) under acidic conditions. The different oxidation states of MnOx promote oxidative-reductive reactions and the higher surface area provides ample absorption sites for pollutant interactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)
