Article
Chemistry, Physical
Jie Chu, Yafei Fan, Lu Sun, Changfu Zhuang, Yunxian Li, Xiaoqin Zou, Chungang Min, Xiaoteng Liu, Ying Wang, Guangshan Zhu
Summary: In this study, a series of CoZn catalysts with controlled Zn content were prepared and investigated for the catalytic hydrogenation of biomass-based ethyl levulinate. The results show that the optimum Zn content significantly enhances the activity and stability of the catalyst, and influences the structural characteristics, dispersion of active sites, and mass transfer of the substrate.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Meng Wang, Xuefeng Yao, Yuxin Chen, Baodong Lin, Na Li, Keduan Zhi, Quansheng Liu, Huacong Zhou
Summary: A novel catalyst was prepared using biomass-derived tannic acid and transition metal cobalt, and its performance was evaluated through hydrogenation reactions. The catalyst demonstrated high GVL yield under mild reaction conditions and efficient hydrogenation of various ketone compounds.
FRONTIERS IN CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Yiwei Tang, Xiaoning Liu, Ran Xi, Le Liu, Xinhua Qi
Summary: In this study, bifunctional ordered mesoporous carbons (Nb/Ni@OMCs) were synthesized and applied in the one-pot catalytic transformation of furfural to ethyl levulinate. Two possible reaction pathways were proposed based on different intermediates.
Article
Energy & Fuels
Huifa Zhang, Shaolin Wang, Huixian Zhang, Lingrui Cui, Fahai Cao
Summary: In this study, an economic and environmentally friendly carbon catalyst P-C-800 was developed for the synthesis of EL from FAL in a hot ethanol medium. The catalyst exhibited high catalytic activity and could be reused multiple times.
Article
Chemistry, Physical
Yafei Li, Boyang Liu, Yu Wang, Shiqing Wang, Xiaocheng Lan, Tiefeng Wang
Summary: Developing non-noble metal catalysts with high activity and selectivity for biomass conversion is important yet challenging. In this study, a series of Ni-xP/Al2O3 catalysts with different P/Ni molar ratios were prepared for the conversion of ethyl levulinate to gamma-valerolactone. The developed Ni-0.38P/Al2O3 catalyst exhibited 5.4 times higher activity than the conventional Ni/Al2O3 catalyst and outperformed existing non-noble metal catalysts. The unique catalytic performance was attributed to the formation of Ni3P phase, as identified through various characterizations.
Article
Chemistry, Multidisciplinary
Aiyun Hu, Haijun Wang, Jian Ding
Summary: In this study, a functionalized, heterogeneous, and insoluble acid catalyst of yeast-sulfonic acid was prepared and characterized for its high catalytic activity. The catalyzed reaction of furfuryl alcohol to produce ethyl levulinate showed significant impact of catalyst amount and reaction conditions on the yield and conversion rate, with a proposed reaction mechanism presented.
Article
Energy & Fuels
Ihtisham Wali Khan, Abdul Naeem, Muhammad Farooq, Zahid Ali Ghazi, Tooba Saeed, Fouzia Perveen, Tabassum Malik
Summary: This study investigates the production of sustainable biodiesel from non-edible wild olive oil using a novel Na/SiO2/TiO2 heterogeneous catalyst. The catalyst was synthesized and evaluated using various spectroscopic techniques. The optimal reaction conditions were determined, and the synthesized biodiesel was analyzed and tested for its physiochemical properties. Furthermore, the commercial viability of the designed catalyst was assessed.
Article
Energy & Fuels
Ruchi Lamba
Summary: This paper investigates the esterification reaction of decanoic acid with ethanol using Amberlyst 15 solid catalyst. The catalytic stability behavior is studied by comparing the structures of fresh and reused catalysts. The effect of initial activities on reaction rate is examined using the group contribution method. The results show that the reaction kinetics of this reaction follow the Eley-Rideal mechanism.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Multidisciplinary
Shankar D. Dhengale, Vaibhav M. Naik, Govind B. Kolekar, Chandrashekhar V. Rode, Prashant V. Anbhule
Summary: Mesoporous materials have small particle size and high surface area, making them highly efficient for therapeutic applications in chemistry, thus performing better compared to other heterogeneous materials.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Energy & Fuels
Yishuang Wang, Jingjing Shi, Xiangsong Chen, Mingqiang Chen, Jun Wang, Jianming Yao
Summary: Cellulose conversion for ethyl levulinate (CCEL) production is a potential technology for obtaining liquid fuels. By using heteropoly acids (HPAs) as catalysts and optimizing reaction conditions, both the cellulose conversion rate and ethyl levulinate yield were significantly improved.
Article
Energy & Fuels
J. L. Aleman-Ramirez, Joel Moreira, S. Torres-Arellano, Adriana Longoria, Patrick U. Okoye, P. J. Sebastian
Summary: This study demonstrates the development of a sustainable biodiesel production catalyst from moringa leaves, with inorganic carbonate minerals promoting transesterification. The synthesized biodiesel meets commercial specifications, and the catalyst shows potential for reuse in multiple cycles.
Article
Chemistry, Physical
Fouzia Perveen, Muhammad Farooq, Abdul Naeem, Muhammad Humayun, Tooba Saeed, Ihtisham Wali Khan, Ghazala Abid
Summary: This study reports the synthesis of an efficient MoO3/ZnCo2O4@CeO2 heterogeneous catalyst for the profitable conversion of corncob biomass into Levulinic acid. The physiochemical properties of the catalyst were studied and correlated with its catalytic activity. The synthesized catalyst showed improved catalytic performance, providing a high yield of Levulinic acid under low catalyst loading and maintained its catalytic activity after multiple cycles of use.
CATALYSIS COMMUNICATIONS
(2022)
Article
Environmental Sciences
Jin Wang, Jihui Zhang, Yahui Song, Xianmang Xu, Mengyun Cai, Peichuang Li, Wenpeng Yuan, Yujiao Xiahou
Summary: In this research, a highly recyclable catalyst of Ag-based agarose hydrogel was successfully fabricated through a simple reduction method. The hydroxyl functional groups in agarose effectively control the growth and dispersion of Ag nanoparticles in the hydrogel, ensuring the reusability of the catalyst. The hydrogel showed great potential as a catalyst for reducing aromatic organic pollutants, achieving high conversion rates and efficient reduction of various pollutants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Shuolin Zhou, Min Lei, Junzhuo Bai, Xianxiang Liu, Lu Wu, Min Long, Keying Huang, Dulin Yin
Summary: The titania nanotubes-bonded sulfamic acid catalyst was successfully fabricated and characterized. The crystal structure of the catalyst remained unchanged, and Bronsted acid sites were efficiently produced on the catalyst surface. The catalyst exhibited high selectivity and reactivity in the esterification and alcoholysis reactions.
FRONTIERS IN CHEMISTRY
(2022)
Article
Engineering, Chemical
Qiuyan Ding, Peng Yan, Hong Li, Zihao Chen, Yanan Guan, Yilai Jiao, Jing Zou, Xin Gao
Summary: This study developed a novel ZSM-5@SiC foam catalyst for reactive distillation to synthesize ethyl levulinate. The structural design was based on the kinetic model of the catalyst, and the designed catalyst showed excellent performance.
CHEMICAL ENGINEERING SCIENCE
(2023)
Review
Polymer Science
Shuaikang Huang, Kai Liu, Wu Zhang, Bing Xie, Zhanming Dou, Zilin Yan, Hua Tan, Chanatip Samart, Suwadee Kongparakul, Naohisa Takesue, Haibo Zhang
Summary: Research on polymer-based dielectric materials for dielectric capacitors can promote the development of advanced energy storage devices and effectively solve energy storage problems. All-organic dielectrics have been proven to be a more suitable option for low-cost and large-scale production compared to polymer inorganic composites. Furthermore, the energy storage theory of dielectrics has been thoroughly reviewed.
Article
Chemistry, Physical
Changlin Liu, Yang He, Xiaowei An, Nutthaphak Kitiphatpiboon, Xiao Du, Xiaogang Hao, Abuliti Abudula, Guoqing Guan
Summary: In this study, a poly(ether block amide) (PEBA) based polymer electrolyte with lithium bis-(trifluoromethanesulfonyl)imide (LiTFSI) as the Li salt is developed, which possesses good ion conductivity and suppresses the growth of Li dendrites. The electrolyte provides abundant amide groups to activate TFSI- anions and further enriches lithium fluoride (LiF) content in the SEI layer, resulting in improved cyclability and long-life span of the full-cell battery. Therefore, the PEBA based electrolyte shows great potential for solid-state lithium metal batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Nutthaphak Kitiphatpiboon, Meng Chen, Changrui Feng, Yifan Zhou, Changlin Liu, Zhongbao Feng, Qiang Zhao, Abuliti Abudula, Guoqing Guan
Summary: Currently, electrolysis of seawater-based electrolytes for hydrogen production is gaining attention. A composite electrocatalyst, MnCo2O4@NiFe-LDH, was developed for seawater electrolysis, which exhibited low overpotentials and improved stability. The NiFe-LDH layer acted as a protective layer and improved the active surface area of MnCo2O4 nanowires. Additionally, high valence states of Mn3+, Co3+, Ni3+, and Fe3+ played a vital role in the oxygen evolution reaction. This composite electrocatalyst shows promise for long-term seawater splitting.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Physical
Xiumin Li, Yifan Zhou, Changrui Feng, Ran Wei, Xiaogang Hao, Keyong Tang, Guoqing Guan
Summary: This article reviews the structural features, synthesis strategies, and performances of high entropy catalysts in catalyzing hydrogen and oxygen evolution reactions in water electrolysis. The crucial roles of structure, composition, multi-sites synergy, and four core effects in enhancing catalytic activity, stability, and resistance of electrochemical corrosion are introduced. The design tactics, main challenges, and future prospects of HEM-based electrocatalysts for hydrogen and oxygen evolution reactions are also discussed.
Article
Engineering, Environmental
Jinggang Zhao, Peifen Wang, Jing Wang, Changlin Liu, Junli Wang, Lei Shi, Guangwen Xu, Abuliti Abudula, Guoqing Guan
Summary: A nanoparticles-stacking MnCox oxide with multifarious active phases was successfully synthesized using a starch-paste assisted method, achieving complete combustion of 1,000 ppm toluene at 226 degrees C. The method not only constructed a porous structure but also enriched active species through the interaction of Mn and Co species with starch-paste. The study demonstrated the potential of creating novel catalysts with multiple active regions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jiajia Xu, Guohua Du, Yufei Zhai, Guoqing Guan, Yuanyang Wang
Summary: The preparation and characterization of three deep eutectic solvents (DESs) using N, N, N-trimethyl butylsulphonate ammonium hydrosulfate (DES1-0) as HBA and urea as HBD are presented. The DESs are used as electrolytes for fuel cells, and show high performance, with DES2-1 exhibiting the highest performance.
Article
Chemistry, Analytical
Xueer Pan, Wenhao Lian, Nan Zhang, Jingxuan Yang, Zhonglin Zhang, Xiaogang Hao, Guoqing Guan
Summary: A mass transfer model based on the spatial superposition assumption is developed to study the coal pyrolysis process. The simulated volatiles yield using this model shows better agreement with experimental data compared to the conventional Jung-La Nauze equation. It is found that the mass transfer coefficients calculated by the Jung-La Nauze equation are overestimated, indicating an overestimation of the mass transfer process predicted with a uniform structure. The results provide insights into the mass transfer and reaction process in gas-solid fluidized systems by considering the influence of heterogeneous structures.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Physical
Tan Khanh Trinh Le, Suwadee Kongparakul, Haibo Zhang, Jinggang Zhao, Guoqing Guan, Narong Chanlek, Thi Tuoung Vi Tran, Chanatip Samart
Summary: Selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) using a Co-Cu/AC catalyst was investigated. The presence of Cu promoted dispersion of Co3O4 particles, leading to increased catalytic activity. The highest selectivity for FDCA (92%) was achieved using the 4Co-Cu/AC catalyst, and the proposed reaction mechanism involved redox reactions between Cu2+/Cu+ and Co3+/Co4+.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Physical
Changrui Feng, Meng Chen, Yifan Zhou, Zhengkun Xie, Xiumin Li, Pairuzha Xiaokaiti, Yasuki Kansha, Abuliti Abudula, Guoqing Guan
Summary: High-entropy (NiFeCoV)S2 porous nanosheets were fabricated on Ni foam through a hydrothermal reaction process for alkaline water/seawater electrolysis. The rough and porous nanosheets provided large active surface area and exposed more active sites, facilitating mass transfer and improving catalytic performance. The as-fabricated catalyst exhibited low overpotentials and excellent corrosion resistance, showing promise for efficient water/seawater electrolysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Panya Maneechakr, Irwan Kurnia, Asep Bayu, Obie Farobie, Chanatip Samart, Suwadee Kongparakul, Guoqing Guan, Surachai Karnjanakom
Summary: This study utilized ultrasonic-assisted ethanolysis to convert raw sugar into 5-ethoxymethylfurfural (5-EMF) product. Sulfonic-magnetic activated carbon (S-MAC) was used as the catalyst for the reaction. By optimizing the reaction conditions, a high yield of 5-EMF was obtained, and the effect of catalyst on yield was investigated by introducing oxygen into the system.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Tan Khanh Trinh Le, Hong Thuc Duyen Nguyen, Suwadee Kongparakul, Haibo Zhang, Guoqing Guan, Narong Chanlek, Tran Nguyen Minh An, Thi Tuong Vi Tran, Chanatip Samart
Summary: In this study, a carbon catalyst embedded with Co and Cu oxides on melamine sponge was developed for the oxidation of HMF. The catalyst showed good distribution and small crystal size, resulting in enhanced catalytic activity for HMF conversion and improved FDCA yield.
Article
Engineering, Chemical
Nan Zhang, Xueer Pan, Jingxuan Yang, Qian Liu, Wenhao Lian, Xiao Du, Zhonglin Zhang, Xiaogang Hao, Guoqing Guan
Summary: Fast heat transfer in the cyclone pyrolyzer enhances the production of pyrolysis gas and tar, improving the quality of tar produced. Compared to the downer pyrolyzer, the cyclone pyrolyzer achieves high solids holdup, violent turbulence, and faster heat transfer. The study reveals that gas-solids heat convection is the main contributor to the heat transfer process, while heat radiation and conduction are relatively small and negligible. The heating rate in the cyclone pyrolyzer is significantly increased compared to the downer pyrolyzer under the same operating conditions.
Article
Chemistry, Physical
Panya Maneechakr, Irwan Kurnia, Asep Bayu, Obie Farobie, Chanatip Samart, Suwadee Kongparakul, Guoqing Guan, Surachai Karnjanakom
Summary: This study focuses on the catalytic/reusable capabilities for green production of 5-HMF from commercial sucrose. The sulfonic-magnetic-copper carbonized carbon (S@Fe-Cu-C) catalyst and choline chloride (ChCl) were found to have high catalytic efficiency for the selective production of 5-HMF. The highest yield achieved was 86.7%. The catalyst showed excellent reusability for up to 10 cycles without significant decrease in 5-HMF yield.
SUSTAINABLE ENERGY & FUELS
(2023)
Review
Electrochemistry
Meng Chen, Nutthaphak Kitiphatpiboon, Changrui Feng, Abuliti Abudula, Yufei Ma, Guoqing Guan
Summary: This critical review discusses the prospects of metal-oxide electrocatalysts for seawater splitting, focusing on their chemical properties, OER selectivity, anti-chlorine-corrosion performance, and reaction mechanisms. The review highlights metal oxides that operate at high current densities, near industrial application levels, based on special catalyst design strategies.
Article
Chemistry, Analytical
Zeying Yang, Boyong Cao, Xiaowei An, Zhongliang Yu, Wuduo Zhao, Fangcheng Su, Guoqing Guan, Yanhao Zhang, Zhengkun Xie, Baoxian Ye
Summary: A reliable electrochemical sensor based on a N-C mediated gamma-Mo2N nanocomposite modified carbon paste electrode was developed for selective and sensitive determination of 6-PPD. The sensor showed good stability and superior sensitivity, and has the potential to be applied for real-time evaluation and monitoring of environmental pollutants.
