Article
Thermodynamics
Ying Wang, Shuai Tan, David A. Bell
Summary: The study investigated steam gasification kinetics in a modified drop tube fixed bed reactor, with a focus on temperature and pressure effects on surface chemical reactions. The random pore model closely matched experimental results, and mass transfer resistances were analyzed using the Thiele modulus based on particle sizes, temperature, total pressure, and steam partial pressure.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Multidisciplinary
Tao Liu, Lirui Mao, Facun Jiao, Chengli Wu, Mingdong Zheng, Hanxu Li
Summary: This study investigated the effect of different kinds and content of Na/Ca-based fluxes on char gasification. It also studied the synergistic catalysis effects and mechanism between the two kinds of fluxes. The results showed that Na2CO3 had the best catalysis effect, and Na2CO3-CaO and Na2CO3-CaCO3 had remarkable synergistic effects.
GREEN PROCESSING AND SYNTHESIS
(2022)
Article
Energy & Fuels
Jingchong Yan, Jing He, Qitong Yang, Zongqing Bai, Zhiping Lei, Zhanku Li, Chao Xue, Zhicai Wang, Shibiao Ren, Shigang Kang, Hengfu Shui
Summary: Coal hydro-liquefaction is an important method for producing liquid fuel for countries lacking crude oil reserves. Gasifying liquefaction residues can eliminate hazardous solid waste and optimize gasification conditions for clean and efficient utilization. The study found that enriched minerals in residues accelerate gasification, while aromatic structures inhibit the reaction, providing valuable insights for improving gasification processes.
Article
Engineering, Environmental
Huaming Da, Hepeng Yin, Guangqian Liang
Summary: The study found that in a coal gasification environment, the use of talc powder can effectively reduce the intensity and pressure of coal dust explosions and prolong explosion time. Talc powder has a better inhibitory effect on higher rank coal dust, effectively protecting the carbides in coal dust.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Review
Energy & Fuels
Haiquan An, Zhen Liu, Xinhui Fang, Ziyang Feng, Xuelei Duan
Summary: This study investigated the CO2 gasification kinetics of direct coal liquefaction residue (ER), showing higher reactivity of ER char compared to coal char and an increase in reactivity with higher ER content in blends. The partial pressure of CO2 promoted the reactivity of all samples, and ER char exhibited larger BET surface area and pore volume compared to coal char. Activation energy and reaction order parameters for ER char, coal char, and their blend were also determined.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Thermodynamics
Christian Hasse, Paulo Debiagi, Xu Wen, Klaus Hildebrandt, Michele Vascellari, Tiziano Faravelli
Summary: Research on clean coal technologies requires experimental methods and computational tools, especially 3D computational fluid dynamics (CFD) simulations which can provide detailed information on complex systems.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Zhiyuan Zhang, Hengtao Zhou, Xutao Wang, Lilin Zhang, Peijun Rao, Huanguang Zhu
Summary: In this study, a water-soluble sodium-loaded coal sample was prepared using crown ether, and its pyrolysis process and kinetics were investigated. The results showed that the presence of sodium intensified the pyrolysis reaction and affected the graphitization of char.
Article
Mining & Mineral Processing
Tao Xu, Yongping Wu, Sankar Bhattacharya
Summary: The gasification kinetic modelling and prediction model for Victorian brown coal chars were found to be applicable in this study, with limited effect on gasification rate by particle size under 106μm. Maddingley char and Yallourn char showed differences in activation energies and pre-exponential factors during CO2 gasification.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
D. A. Bagdonas, A. J. Enriquez, K. A. Coddington, D. C. Finnoff, J. F. McLaughlin, M. D. Bazilian, E. H. Phillips, T. L. McLing
Summary: Domestic rare earth element sources and production in the United States are limited and reliant on processing overseas. Recent investigations have focused on the potential of unconventional ore stocks, including coal and coal byproducts. This study specifically examines coal byproducts from coal burning power stations in Wyoming's Powder River Basin and finds that they have consistently high concentrations of rare earth elements, making them a promising potential resource. Economic feasibility analysis shows that extracting rare earths from these coal byproducts could be more cost-effective than mining. However, the profitability is highly sensitive to rare earth prices. Overall, developing coal byproducts as a partial solution to domestic rare earth element shortages shows promise.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Qing He, Yan Gong, Lu Ding, Qinghua Guo, Kunio Yoshikawa, Guangsuo Yu
Summary: The study revealed that the reactivity of demineralized coal char was more sensitive to the heating rate, and the parameters of kinetics varied with the conversion level accordingly. At high temperatures, the conversion-effectiveness factors of raw coal char increased with the conversion level.
Article
Thermodynamics
Jun Zhao, Hassan Nasir Mangi, Zhenyue Zhang, Ru'an Chi, Haochen Zhang, Mengyu Xian, Hong Liu, Haibin Zuo, Guangwei Wang, Zhigao Xu, Ming Wu
Summary: This study aimed to utilize low-rank coal and biomass residue in the coking process, and investigated the performance and structural characteristics of the prepared cokes. The results showed that modified coal could improve the quality and caking performance of coke, as well as enhance the gasification performance.
Article
Chemistry, Physical
Fan Yang, Qingbo Yu, Wenjun Duan, Zhenfei Qi, Qin Qin
Summary: Electrochemical catalytic gasification (ECG) is a new approach for achieving high efficiency coal gasification at low reaction temperatures. Compared to common coal gasification (CCG), ECG yields higher carbon conversion, CO production and combustible components, which increase with power. In the ECG process, thermal electrons play a significant role.
CATALYSIS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Yang Guo, Jianjun Wu, Wenke Jia, Fanhui Guo, Guofeng Qiu, Rumeng Wang, Yixin Zhang, Baiqian Dai
Summary: The co-combustion of sewage sludge and coal gasification fine slag residual carbon can improve ignition and burnout properties, maintain combustion stability, and enhance comprehensive combustion performance.
Article
Green & Sustainable Science & Technology
Yinshuang Xia, Jiujie Shi, Zhongnan Zhao, Zhen Liu, Xuhui Liu, Chao Zhang
Summary: This study establishes a comprehensive geodatabase in the Yellow River Basin to better understand the coal-water nexus. The total water withdrawal by the coal industry chain in 2018 was estimated at 2.765 billion m3, with coal-fired power generation accounting for 48%. The water stress exerted by the coal industry is most significant in the eastern part of the 'Hetao' area.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Qi Zhang, Shiquan Shan, Jinhong Yu, Zhijun Zhou, Kai H. Luo
Summary: This study designed a novel experimental solar radiation gasification thermogravimetric device and developed an energy model for a solar radiation dish thermochemical conversion system. The results showed that direct radiation had higher carbon conversion rate, energy upgrade factor, and energy conversion efficiency compared to indirect radiation. The catalytic effect of K2CO3 was better than that of Na2CO3. The study also analyzed the reaction kinetics of direct radiation-catalyzed gasification and constructed a solar concentrating radiation dish thermochemical conversion system model. The system energy efficiency in the direct radiation form was higher than that in the indirect radiation form, and adding catalyst further increased the energy efficiency. The results guide the chemical process of solar thermal conversion.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Runping Ye, Yuan-Yuan Huang, Chong-Chong Chen, Yuan-Gen Yao, Maohong Fan, Zhangfeng Zhou
Summary: This article reviews various approaches to synthesize ethylene glycol (EG) from CO2 and its derivatives under mild conditions, including thermocatalysis, photocatalysis, and electrocatalysis. The coal-to-ethylene glycol technology, a mature thermal catalytic method, still faces challenges in industrialization. The recent progress in the development of coal-to-ethylene glycol technology is discussed, with a focus on achieving EG synthesis under mild conditions through strategies such as doping promoters, support modification, and catalyst design. The emerging technological progress of photocatalytic and electrocatalytic EG synthesis under ambient conditions is also introduced, highlighting the need to address issues for large-scale production. Future development issues and prospects for ambient EG synthesis using different catalytic routes are proposed.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Lulu Ping, Yuan Zhang, Baojun Wang, Maohong Fan, Lixia Ling, Riguang Zhang
Summary: Based on the advantages of ethane oxidative dehydrogenation and the challenge of low ethylene selectivity, chemical looping oxidative dehydrogenation (CL-ODH) over the IrO2 catalyst was studied. The study revealed that both S-IrO2 and R-IrO2 states exist for the IrO2 catalyst in the dehydrogenation and regeneration processes, and the optimal reaction conditions were determined. This research expands the understanding of ethane CL-ODH over metal oxide catalysts and provides valuable information for process optimization and catalyst development.
Article
Nanoscience & Nanotechnology
Yuan Zhang, Baojun Wang, Maohong Fan, Lixia Ling, Riguang Zhang
Summary: In this study, a strategy to improve the catalytic performance of Pt-Sn alloy catalysts in ethane dehydrogenation (EDH) is proposed by engineering the shell surface structure and thickness. Density functional theory (DFT) calculations and kinetic Monte Carlo (kMC) simulations are used to understand the influences of catalyst surface structure, temperature, and reactant partial pressures. The results demonstrate that Pt@Pt3Sn catalysts generally have higher C2H4(g) activity and lower selectivity compared to Pt3Sn@Pt catalysts, due to their unique surface geometrical and electronic properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lulu Chai, Jinlu Song, Yanzhi Sun, Xiaoguang Liu, Xifei Li, Maohong Fan, Junqing Pan, Xueliang Sun
Summary: This study proposes a smart dual-oxygen electrode for high-specific-energy batteries, which addresses the issues of energy efficiency decay, wide charge-discharge gap, and catalyst peeling. The electrode consists of a switch control module, OER and ORR catalysis layers, and an ion conductive | electronic insulating membrane. The electrode shows an ultralow energy efficiency decay rate and enables a high energy efficiency in zinc-air batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wantong Zhao, Xuebai Lan, Baojun Wang, Maohong Fan, Riguang Zhang
Summary: In this study, the inverse Mo6C4/Cu catalyst is modeled and predicted to promote C2 oxygenates formation in syngas transformation. The results show that the inverse Mo6C4/Cu catalyst greatly improves catalytic performance and facilitates C2 oxygenate production compared to previous catalysts. This is attributed to the synergistic effect between Mo6C4 cluster with Cu catalyst, which easily activates CO to produce CH2 monomer and facilitates CO insertion into CH2 to CH2CO.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Kunpeng Li, Hui Hu, Maohong Fan, Mi Zhang, Zhongming Chen, Ruibin Lv, Hao Huang
Summary: An advanced oxidation process (AOPs) using Fe(II) activated peracetic acid (PAA) was investigated for the simultaneous removal of SO2 and NO from flue gas. The maximum removal efficiencies obtained were 92.3% for NO and 99.5% for SO2 under optimal conditions. Reactive oxidizing species and organic radicals were generated in the Fe(II)/PAA system, with organic radicals confirmed to be the major factors affecting NO oxidation. The main products of SO2 and NO removal were identified as SO42- and NO3-.
Review
Chemistry, Multidisciplinary
Tongtong Wang, Zhe Chen, Weibo Gong, Fei Xu, Xin Song, Xin He, Maohong Fan
Summary: Carbon nanofibers (CNFs) have diverse applications in sensor manufacturing, electrochemical catalysis, and energy storage. Electrospinning is a powerful commercial large-scale production technique for CNFs due to its simplicity and efficiency. This paper discusses the working theory of manufacturing electrospun CNFs, current efforts in upgrading CNF properties, and the corresponding applications. Future development of CNFs is also discussed.
Article
Chemistry, Physical
Yueyue Wu, Xinyi Guo, Xiufeng Shi, Baojun Wang, Maohong Fan, Riguang Zhang
Summary: This study investigates the catalytic performance of a series of S-modified PdM IMCs with different M types (Cu, Ag and Au) and ratios (1: 1, 3: 1 and 1: 3) in C2H2 semi-hydrogenation using DFT calculations and microkinetic modeling. The results show that the catalytic performance strongly depends on the space region of metal active site and the electronic properties induced by S atoms and the M type and ratio. Only S/Pd1Ag1 and S/Pd1Au1 exhibit higher H2 dissociation activity, C2H4 selectivity and production activity, and can effectively inhibit the formation of green oil.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Weixiang Zhang, Lina Zhang, Sijia Pei, Jiarui Wang, Dawei Liu, Xiaoxun Ma, Maohong Fan, Long Xu
Summary: One of the most significant topics in chemical looping reforming technology is the design and preparation of appropriate oxygen carriers with high reactivity and excellent stability. This study focuses on the chemical looping reforming of methane using cobalt-doped Ce-based oxygen carriers synthesized via the solution combustion method with the assistance of coconut shell. The introduction of cobalt decreases the crystallite size, increases oxygen vacancy concentration and lattice oxygen mobility, and the addition of coconut shell further enhances these positive changes and the interaction between Ce and Co.
Article
Biochemical Research Methods
Behnam Moeini, Joshua W. Pinder, Tahereh G. Avval, Collin Jacobsen, Hidde H. Brongersma, Stanislav Prusa, Pavel Babik, Elena Vanickova, Morris D. Argyle, Brian R. Strohmeier, Brian Jones, Daniel Shollenberger, David S. Bell, Matthew R. Linford
Summary: Surface silanols (Si-OH) are important on fused silica surfaces in chromatography. In this study, we modified the inner surface of a fused silica capillary column by using a gas-phase reactor and a small reactive silane (TDMAMS). We quantified the number of surface silanols on unmodified and TDMAMS-modified silicon and found a significant decrease after modification.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Editorial Material
Multidisciplinary Sciences
Jie Ding, Runping Ye, Yanghe Fu, Yiming He, Ye Wu, Yulong Zhang, Qin Zhong, Harold H. Kung, Maohong Fan
Summary: Urea, a crucial nitrogen fertilizer, plays a vital role in meeting global food demand. However, its current production method is energy-intensive and environmentally unfriendly. In this commentary article, the authors propose strategies to address and overcome these challenges.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zhao Sun, Shufan Yu, Sam Toan, Rufat Abiev, Maohong Fan, Zhiqiang Sun
Summary: In this study, CuCr2O4-based catalytic oxygen carriers were designed for low-temperature methanol reforming. The activation of methanol at relatively low temperatures was achieved through the reinforcement of the Cu-O-Cr structure and the induction of highly reactive lattice oxygen. The hydrogen production rate was significantly increased by 53.2% with the application of CuCr2O4-based catalytic oxygen carriers. Furthermore, the Cu-O-Cr structure demonstrated satisfactory cyclic stability.
Article
Energy & Fuels
Chengda Li, Yueli Wen, Bin Wang, Maohong Fan, Wenlong Liu, Zheng Cui, Wei Huang
Summary: Activation and desorption of hydrogen in toluene methyl is the rate-limiting step for side-chain alkylation of toluene with methanol. In this study, two dehydrogenation strategies were employed to enhance catalytic performance by introducing Cu as a dehydrogenation component in PAl-NaX catalyst and adjusting the acid-base properties through varying NaOH loading. The relationship between the percentage of acid-base sites, low valence Cu species, and catalytic performance was investigated using various characterization techniques and ternary regression analysis. The results showed that Cu, especially low valence Cu species, promoted the selectivity of side-chain alkylation products to some extent, but base sites played a more critical role in enhancing selectivity.
Article
Chemistry, Multidisciplinary
Runping Ye, Lixuan Ma, Xiaoling Hong, Tomas Ramirez Reina, Wenhao Luo, Liqun Kang, Gang Feng, Rongbin Zhang, Maohong Fan, Riguang Zhang, Jian Liu
Summary: This study presents a strategy to enhance the low-temperature CO2 activation through regulating the local electron density of active sites. An optimized Ni/ZrO2 catalyst exhibits excellent performance for CO2 methanation, with high CO2 conversion, CH4 selectivity, and stability, making it one of the best Ni-based catalysts for CO2 methanation to date.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Xuebai Lan, Mifeng Xue, Baojun Wang, Maohong Fan, Riguang Zhang
Summary: This study investigates the performance of diatomic metal catalysts in the semi-hydrogenation of C2H2 by constructing different types of DACs and tuning their coordination environments. The results show that CoCu@N6V4-11, CoPd@N6V4-11, CoNi@N6V4-11, and CoPt@N6V4-11 DACs exhibit superior C2H4 selectivity, formation activity, and stability. Introducing a second metal can significantly improve C2H4 selectivity while maintaining high C2H4 formation activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
