Article
Engineering, Chemical
Jichao Sun, Hewei Yu, Peisen Zhang, Gaoyu Qi, Xiuxiu Chen, Xiaohui Liang, Hongyu Si
Summary: This study synthesized a CaO-CeO2/slag solid base catalyst using steel slag as a carrier for the transesterification of palm oil into FAMEs. The catalyst showed outstanding performance and could be reused for at least three cycles, making it a potential cost-effective and environmentally friendly option for biodiesel production.
Article
Green & Sustainable Science & Technology
Shaige Xia, Jian Li, Guanyi Chen, Junyu Tao, Wanqing Li, Guangbin Zhu
Summary: In this study, acid-base bi-functional Co doped Fe2O3-CaO nanocatalysts were prepared and optimized for biodiesel production, showing enhanced catalytic activity and FFA resistance. The biodiesel yield from soybean oil and WFO was significantly improved, along with better stability and reusability of the catalyst.
Article
Engineering, Environmental
Chao Chen, Shaokang Qu, Mengli Guo, Jie Lu, Weiming Yi, Ransheng Liu, Jincheng Ding
Summary: This work focuses on the development of a reusable heterogeneous catalyst for the preparation of biodiesel. The synthesized mixed metal oxide catalyst shows high stability and achieves a FAEE yield of 92.6% under optimized conditions.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Review
Chemistry, Multidisciplinary
Manish Kumar Bharti, Sonia Chalia, Preeti Thakur, S. N. Sridhara, Atul Thakur, P. B. Sharma
Summary: The depletion and pollution of fossil fuels are prompting the use of alternative, renewable energies such as biofuels. Nanoferrites heterogeneous catalysts have been reviewed for producing biodiesel efficiently. Using transesterification, high conversion yields, low cost, and reusable catalysts can be achieved, with over 90% conversion yields possible with moderate alcohol/oil ratios.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Acoustics
Pamella A. Oliveira, Raphaela M. Baesso, Gabriel C. Morais, Andre Alvarenga, Rodrigo P. B. Costa-Felix
Summary: This study investigated the use of high frequency, low power ultrasound in biodiesel production, eliminating the need for external heating sources and mechanical stirring. Results showed that increasing ultrasound power and frequency can enhance biodiesel conversion rates. Moreover, ultrasound was found to have lower energy consumption compared to conventional methods, indicating its potential as a promising technology for biodiesel production.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Applied
Qi Chen, Anping Wang, Wenxuan Quan, Wei Gong
Summary: To develop new raw materials for biodiesel, Henbane seed oil was synthesized into biodiesel for the first time using K2O/γ-Al2O3 as a catalyst. The optimal transesterification reaction conditions were determined using central composite design and response surface methodology. The predicted biodiesel yield was 90.25%, and the quality of the biodiesel met the European standard EN14214.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Natkanin Supamathanon, Kornkanok Boonserm, Sireerat Lisnund, Narong Chanlek, Bunyarat Rungtaweevoranit, Pongtanawat Khemthong, Jatuporn Wittayakun, Nattawut Osakoo
Summary: By adding Al metal during the synthesis of geopolymer, a modified Geo with larger pore size was obtained, exhibiting strong basicity of the catalysts due to strong interaction of calcium species with the aluminosilicate network. Experimental results showed that the catalyst based on CaO/Geo achieved a FAME yield of 93.12%, significantly higher than that of unfoamed Geo. The 30% CaO/Geo catalyst could be reused for at least 3 runs, demonstrating its potential as a cost-effective catalyst for biodiesel production.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Raquel K. P. Cardoso, Gabriel V. A. Silva, Bruno T. S. Alves, Vitoria A. Freire, Jose J. N. Alves, Bianca V. S. Barbosa
Summary: In this study, Mo-KIT-6 catalyst precursors were directly hydrothermally synthesized with different Si/Mo molar ratios (10, 20, 30) for the production of biodiesel from soybean oil transesterification with methanol. The results showed that the Si/Mo ratio was the most significant variable affecting the biodiesel yield. Under the optimal conditions of using the 10_Mo-KIT-6 catalyst and an alcohol/oil ratio of 20/1, the highest biodiesel yield was achieved. However, using the 20_Mo-KIT-6 catalyst with an alcohol/oil ratio of 15/1 resulted in a biodiesel yield close to the maximum, and it required less methanol consumption, leading to lower energy consumption for the separation of unreacted alcohol.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
Hantoro Satriadi, Isdayana Yogi Pratiwi, Malikhatul Khuriyah, Widayat, Hadiyanto, Jedy Prameswari
Summary: The study aimed to develop a sustainable Ni/Zeolite catalyst derived from geothermal solid waste for waste cooking oil processing. By investigating the effects of catalyst concentration and operation temperature on transesterification process, the optimal conditions for biodiesel production from waste cooking oil were determined. Results showed that the synthesized Ni/Zeolite catalyst had granular shape, crystalline structure, increased surface area, and pore volume. Highest biodiesel yield was achieved at 3% w/w Ni/Zeolite catalyst addition and 60 degrees C operating temperature. The synthesized catalyst showed a decrease in biodiesel yield after three cycles of reuse.
Article
Engineering, Chemical
Ching-Hsing Lin, Yi-Tang Chang, Mei-Chou Lai, Tai-Ying Chiou, Chien-Sen Liao
Summary: This study successfully produced high-quality biodiesel from waste soybean oil through an efficient microwave-assisted transesterification process. The continuous conversion rate was approximately 95%, and energy consumption was significantly reduced. The biodiesel met the specified standards and showed improved properties compared to traditional methods.
Article
Energy & Fuels
Xiaohang Wang, Kun Yang, Rui Cai, Yujie ChenYang, Zhixing Huang, Benyong Han
Summary: Eleven ionic liquids composed of tetraethylammonium and amino acids were synthesized and evaluated for their catalytic capability in transesterification reactions. Tetraethylammonium arginine showed the highest catalytic activity. By adjusting the reaction conditions, a biodiesel conversion rate of 98.4% was achieved in 60 minutes.
Article
Chemistry, Physical
Shunpan Zhang, Junying Fu, Shiyou Xing, Ming Li, Xiaochun Liu, Lingmei Yang, Pengmei Lv
Summary: Biofuel has received worldwide attention due to its sustainability and low net-carbon emission in the face of the energy crisis and ecological imbalance caused by greenhouse gases. In order to meet the demand of the traditional biodiesel industry, a new silicate-strength strategy was successfully adopted to improve the stability and activity of the calcium-based solid-base catalyst. The synthesized catalyst, NCSO, showed high yield of FAMEs and promising reusability, and the combined characterization confirmed the synergistic effect of Na2CaSiO4 and CaO in catalyzing the transesterification reaction.
Article
Chemistry, Applied
Marcia G. Ventura, Thomas Pullert, Rubia Risso, Ines Matos, I. Fonseca, Joaquim M. Vital
Summary: Composite materials based on CaO from egg shells and anionic sulfated linear polysaccharide k-carrageenan from red seaweeds were successfully used as a heterogeneous catalyst for transesterification reaction of soybean oil with methanol. The prepared composites exhibited excellent thermal stability and catalytic activity, with an internal structure consisting of meso and macropores that widen with the addition of a crosslinker HMDI.
Article
Engineering, Environmental
Ricardo Rodriguez-Ramirez, Fabiola S. Sosa-Rodriguez, Jorge Vazquez-Arenas
Summary: Zinc Oxide-co-Sodium Zirconate (ZnO.Na2ZrO3) composite catalyst is synthesized for the fast transesterification of triglycerides in soybean oil, showing competitive performance compared to caustic soda. The synthesized catalyst exhibits enhanced properties and can achieve 97% biodiesel conversion under optimal conditions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Pelin Misiroglu Varol, Alattin Cakan, Burcu Kiren, Nezihe Ayas
Summary: This study investigates the use of potassium hydroxide (KOH) impregnated alumina catalysts for biodiesel production. The catalysts were prepared with different configurations and tested under various conditions. The results showed that a catalyst with 30 wt.% KOH content, calcined at 400 degrees C for 3 h, achieved a FAMEs content of 97.30% (conversion). The transesterification reaction was carried out using a microwave heating system, with a temperature of 65 degrees C, catalyst loading of 3 wt.%, methanol to oil molar ratio of 12:1, and a reaction duration of 35 min.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Engineering, Chemical
Neng Guo, Xiaoyan Cao, Qian Li, Yan Han, Huiquan Li, Yupeng Yuan
Summary: In this study, oxygen-vacancy-rich Ag/Bi5O7Br nanosheets were synthesized using a facile liquid-phase reduction method for photocatalytic NO removal. The results showed that under visible light irradiation, the photocatalytic NO removal ratio of oxygen-vacancy-rich Ag/Bi5O7Br reached 64.65%, which was 1.6 times higher than that of pristine Bi5O7Br. Moreover, the oxygen production rate of Ag/Bi5O7Br was nearly 10 times higher than that of Bi5O7Br.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Meng Zhu, Xiaojuan Jiao, Wenwei Wang, Haiwei Chen, Fengjiao Li
Summary: To achieve stable cycling of high-voltage cathode and high efficiency for Li metal batteries, a novel ester diluent-based localized high-concentration electrolyte (LHCE) was successfully applied. The high-concentration electrolyte retains its oxidation resistance after dilution. The optimized physical properties and robust SEI film enable superior long-term operation with a high-voltage cathode, achieving over 99.5% Coulombic efficiency in Li||Cu cells. This strategy demonstrates the effectiveness of developing ester diluents for LHCEs in lithium metal batteries.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Ren Tao, Peng Xing, Huiquan Li, Zhigen Cun, Chenye Wang, Shengyue Ma, Zhenhua Sun
Summary: This study investigates the kinetics of full-component pyrolysis of spent NCM LIBs using the isoconversional method, revealing the reaction processes and activation energy at different stages, providing guidance for the recycling of waste LIBs.
Article
Chemistry, Physical
Zhenhua Sun, Shaopeng Li, Huiquan Li, Mingkun Liu, Zhanbing Li, Xianjie Liu, Mingyong Liu, Qiyun Liu, Zhaohui Huang
Summary: A study was conducted on the characteristics and surface corrosion behavior of waste saggar samples used in the synthesis process of LiCoO2. The erosion reactants in recycled saggars were identified through high-temperature solid-state reactions. The results showed significant erosion penetration of lithium compared to cobalt, with generation of key phases and internal crack expansion at the material-saggar interface. These findings contribute to the improvement of saggar and the utilization technology of waste saggars.
Article
Chemistry, Multidisciplinary
Jiale Wu, Liguo Wang, Shuang Xu, Yan Cao, Ziqiang Han, Huiquan Li
Summary: Developing efficient and green catalytic systems for the synthesis of alicyclic amines via hydrogenation of nitroaromatics is highly desired. In this study, Ru-Pd dual active site catalysts anchored on air-exfoliated carbon nitride were developed and showed superior performance in the hydrogenation of nitrobenzene to cyclohexylamine. The Ru-Pd catalysts exhibited a higher CHA production rate compared to single Ru or Pd based catalysts and showed enhanced catalytic activity due to the highly dispersed Ru-N-x and Pd-N-x at a nanoscale distance.
Article
Chemistry, Multidisciplinary
Yuan-Fan Yang, Hong-Qi Huang, Zong-Yin Song, Hui-Quan Li, Xin-Yu Yu, Yu-Min Cui, Meng Yang, Shi-Hua Chen, Xing-Jiu Huang
Summary: Doping heteroatoms to modulate active sites and improve catalytic capabilities of nanomaterials has gained attention. However, the relationship between catalytic performance and structural changes caused by doping has been overlooked. In this study, a strategy for enhancing electrochemical analysis of As(iii) was developed using P-doped FeCo2O4-x (P-FeCo2O4-x). P-FeCo2O4-x modified electrodes exhibited improved sensitivity, selectivity, stability, repeatability, practicality, and anti-interference ability compared to FeCo2O4-x. X-ray photoelectron spectroscopy revealed the role of P-doping in facilitating electron transfer and the formation of oxygen vacancies, leading to enhanced electrocatalysis of As(iii). This work provides insights into the relationship between internal changes caused by heteroatomic doping and catalytic performance, guiding the design of highly active electrocatalytic interfaces for ultrasensitive environmental analysis of heavy metal ions.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Chemistry, Multidisciplinary
Mingjuan Sun, Fengjiao Li, Yanhui Cui, Xiaolin Zhao, Haiwei Chen, Shuting Liang
Summary: Dimethyl carbonate (DMC) has been synthesized efficiently and mild by the electrochemical method using urea and methanol as starting materials. The highest DMC yield of 50.4% with 100% selectivity was achieved under optimized conditions. This method also successfully synthesized other important organic carbonates.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Zhanbing Li, Huiquan Li, Xingzhong Huang, Wenfen Wu, Zhenhua Sun, Xiuwen Wu, Shaopeng Li
Summary: This study investigated the catalytic hydrolysis of secondary aluminum dross (SAD) using NaOH as a catalyst to remove nitrides and fluorides simultaneously. The optimal conditions for catalytic hydrolysis were established and achieved efficient removal of nitrides and fluorides. The chemical speciation and transformation of nitrides and fluorides were systematically analyzed. The results of this study are significant for resource utilization of SAD.
Article
Energy & Fuels
Da Shi, Jianbo Zhang, Huiquan Li, Shaopeng Li, Fayu He, Jiangshan Qu, Ruiqi Chang, Ganyu Zhu, Chennian Yang, Chenye Wang
Summary: Coal gasification fine slag (CGFS) generated in the coal chemical industry poses serious environmental pollution and resource wastage. By studying the phenomenon of covering between CGFS particles, this study proposes a selective dispersion flocculation flotation method to efficiently separate unburned carbon (UC) from CGFS. The mechanism of selective dispersion flocculation is revealed through the analysis of adsorption mode, interaction force between particles, and particle size distribution. Results show that selective adsorption controls the agglomeration of particles, transforming the original carbon-ash selective agglomeration state to carbon-carbon selective agglomeration state. This work improves the recovery rate of combustible materials and provides guidance for the separation of carbon and ash from gasification slag in industry.
Article
Nanoscience & Nanotechnology
Fengjiao Li, Naveed Mushtaq, Tong Su, Yanhui Cui, Jiajia Huang, Mingjuan Sun, Manish Singh, Xiaolin Zhao, Kristina Maliutina, Yu Zhang, Chuanxin He, Ming Yang, Bin Zhu, Liangdong Fan
Summary: In this study, a unique hybrid catalyst composed of nitrogen-doped carbon nanotube (NCNT) grown on La0.8Sr0.2Ti0.65Fe0.35O3-delta perovskite oxide (LSTFO/NCNT) was developed as a bifunctional ORR and OER electrocatalyst for zinc-air batteries. The optimized LSTFO/NCNT hybrid exhibited outstanding bifunctional oxygen electrocatalysis performances with a characteristic potential gap (Delta E) of 0.76 V. The homemade zinc-air batteries using LSTFO/NCNT as an air electrode catalyst demonstrated reliable electrochemical performances with high peak power density and cycling stability, achieving a final round-trip efficiency of 62.8% at 10 mA cm(-2) during 123 cycles.
MATERIALS TODAY NANO
(2023)
Article
Chemistry, Physical
Xiaolin Zhao, Fengjiao Li, Shuting Liang, Shuyuan Liu, Mingjuan Sun, Yanhui Cui, Bin Chi
Summary: In this study, a hollow spherical LaNiO3 perovskite material was synthesized and showed excellent performance in oxygen reduction reaction (ORR) and urea oxidation reaction (UOR), making it a potential candidate for urea-assisted Zn-air batteries and urea splitting.
APPLIED SURFACE SCIENCE
(2023)
Article
Thermodynamics
Shuyuan Liu, Luyang Han, Qunli Cheng, Peipei Wang, Yu Zhang, Fengjiao Li, Linlin Liu
Summary: In this study, a distributed regenerative cooling system using supercritical aviation kerosene and distributed supply of water is evaluated and compared with a conventional regenerative cooling system. The results show that the distributed system has better thermal performance, with higher heat transfer coefficient and heat absorption capacity. Moreover, increasing the secondary injection ratio of water can further reduce coke content and increase the heat transfer coefficient.
Review
Chemistry, Multidisciplinary
Shuting Liang, Jie Yang, Fengjiao Li, Shunbi Xie, Na Song, Liang Hu
Summary: This paper focuses on the latest research printing technology and broad application for flexible liquid metal (LM) materials. The precision of liquid metal printing on the devices was improved to 10 nm through various printing methods. The development of novel liquid metal inks has enhanced the recovery, rapid printing, conductivity, and strain resistance. Liquid metals also show promise in the applications of biochemical sensors, photocatalysts, composite materials, driving machines, and electrode materials.
Article
Chemistry, Multidisciplinary
Fengjiao Li, Xiaoming Zhang, Shuting Liang, Mingjuan Sun, Xiaolin Zhao, Haiwei Chen, Yanhui Cui
Summary: Urea splitting for hydrogen production has attracted attention for energy-saving purposes. This study developed cost-effective composites of Ni nanoparticles anchored on 2D porous carbon nanosheets, which exhibited excellent urea oxidation reaction (UOR) performance. The optimized 4-Ni/CS catalyst showed low potential and Tafel slope, and the overall urea splitting cell with 4-Ni/CS as the anode catalyst achieved significant voltage reduction compared to pure water splitting. The enhanced performance of 4-Ni/CS was attributed to its larger specific area, abundant active sites, defects, and faster mass transfer.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Energy & Fuels
Jiajia Huang, Tong Su, Huibin Zhao, Fengjiao Li, Te-Wei Chiu, Manish Singh, Qixing Wu, Liangdong Fan
Summary: In this study, a comprehensive strategy combining nanoarchitecture synthesis, nanoparticle exsolution design, and hybrid phase assembly with multi-interfacial interaction was proposed to fabricate highly efficient Ruddlesden-Popper composite materials. The composite catalyst LSFCN-R600 showed the best OER activity and reliable performance, indicating its potential application in various reactions and energy technologies.
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)
