Article
Nanoscience & Nanotechnology
Haodong Wang, Matthew Kottwitz, Ning Rui, Sanjaya D. Senanayake, Nebojsa Marinkovic, Yuanyuan Li, Ralph G. Nuzzo, Anatoly Frenkel
Summary: By combining aliovalent doping and oxygen vacancy generation, the study demonstrates an enhancement in the thermal stability of supported single-atom configurations.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Zhijun Zhang, Kezhen Chen, Jichang Lu, Qin Zou, Yuhui Zhao, Yongming Luo, Dedong He, Rongtao Li
Summary: Investigation of Sn modified CuO-CeO2 catalysts showed that Sn-Cu-Ce-5 catalyst exhibited stronger interaction between active sites and support, higher amounts of Sn2+ and Ce3+, and increased amount of oxygen vacancies, leading to excellent catalytic performance even in the presence of CO2 and H2O.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Dezhi Ren, Chengxiong Wang, Dongxia Yang, Yangjia Rong, Junchen Du, Yunkun Zhao
Summary: Different Rh/Pt weight ratios in NSR catalysts show varying NOx removal efficiency and nitrogen yield at different temperature ranges. Increasing the weight ratio enhances NOx reduction and overall nitrogen yield in the rich phase, but has a negative effect in the high-temperature region.
CATALYSIS COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Hang Zhang, Lijuan Xia, Yuan Li, Jianping Tang, Lei Wang, Shengliang Zhong
Summary: Designing nanocatalysts with defect architectures and heteroatom doping can increase the performance of the electrocatalyst used for OER. In this study, Fe-doped CeO2 nano-sheets with oxygen vacancies (O-v) were synthesized using a microwave strategy, and it was found that these nano-sheets exhibited excellent electrocatalytic properties and stability for OER. The active sites contributed by the defective regions and the electronic structure improvement due to Fe doping are the main factors contributing to the outstanding performance of Fe/CeO2 NSs.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Rubina Khatun, Rohan Singh Pal, Mohammad Ahmad Shoeb, Deepak Khurana, Shubham Singhl, Nazia Siddiqui, Mukesh Kumar Poddar, Tuhin Suvra Khan, Rajaram Bal
Summary: In this study, a defect-rich Ni-Pt/CeO2 catalyst with oxygen vacancy sites was synthesized using a one-pot complex combustion method. The catalyst exhibited high activity for CO2 dissociation at low temperature. Comparisons with conventionally impregnated catalysts demonstrated superior catalytic properties and stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Jingwen Jiang, Xiaoxiao Zou, Zhiyuan Mei, Sheng Cai, Qi An, Yao Fu, Han Wang, Tingting Liu, Hong Guo
Summary: This study focuses on improving the photocatalytic activity of CO2 reduction through the design of a hollow CeO2@MoSe2 catalyst with rich oxygen vacancies (Vo) and MoSe2 semiconductor heterojunction. The introduction of Vo enhances CO2 capture and electron transfer, while the heterojunction increases light absorption and carrier separation efficiency. The prepared catalyst showed enhanced CH4 and CO production, indicating the potential for effective CO2 reduction. Additionally, the photocatalytic mechanism was discussed using DFT and in-situ DRIFTS, providing new insights for future research in the field.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Lulu Guo, Mengmeng Liu, Xuguang Zhang, Taotao Sui
Summary: In this study, a highly sensitive and stable CO gas sensor based on Pt-functionalized CeO2 nanorods was developed. The Pt-CeO2 sensor exhibited superior CO sensing performance with high response value, selectivity, rapid response/recovery speed, and remarkable long-term stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Fan Lin, Kenneth Rappe, Libor Kovarik, Miao Song, Xiaohong Shari Li, Mark Engelhard, Yong Wang
Summary: Research has found that high-temperature pretreatment of CeO2 support can enhance the redox and hydrocarbon oxidation activity of Pt/CeO2 catalyst. Compared to untreated CeO2 support, high-temperature pretreated CeO2 support can enhance the mobility of surface lattice oxygen, thus promoting the oxidation activity of Pt/CeO2 catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qingyue Wang, Yuxin Li, Ana Serrano-Lotina, Wei Han, Raquel Portela, Ruixuan Wang, Miguel A. Banares, King Lun Yeung
Summary: A unique 1D nanostructure of Pt@CeO2-BDC was prepared for toluene oxidation, facilitating the stepwise oxidation of toluene to CO2 and H2O. The presence of Pt clusters on the catalyst surface promoted the adsorption of toluene and reaction activation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
M. Tang, S. Liu, W. Fu, J. Wang, K. Yin, M. Zhu, J. Tian, Y. Sun, Y. Dai
Summary: In this study, celery-like CeO2 nanofibers were synthesized and used as a reliable support for Pt nanoparticles to enhance their catalytic activity and sinter resistance. The Pt@CeO2 nanoparticles showed stable catalytic performance at high temperatures.
MATERIALS TODAY NANO
(2022)
Article
Chemistry, Multidisciplinary
Tomas R. Reina, Miriam Gonzalez-Castano, Victor Lopez-Flores, L. T. Marcela Martinez, Andrea Zitolo, Svetlana Ivanova, Wenquian Xu, Miguel Angel Centeno, Jose A. Rodriguez, Jose Antonio Odriozola
Summary: In this study, it was demonstrated using in situ X-ray absorption spectroscopy that both Au and Pt remain unoxidized during the water-gas shift (WGS) reaction, with significant differences in their dynamics under WGS atmospheres. While Pt undergoes restructuring into metallic particles, Au nanoparticles experience particle splitting and agglomeration processes, maintaining a zero oxidation state throughout the reaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Yixiong Du, Chuan Qin, Yanfei Xu, Di Xu, Jingyang Bai, Guangyuan Ma, Mingyue Ding
Summary: Efficient catalysts for CO2 methanation at low temperature are highly promising yet challenging to develop. This study successfully synthesized a Ni/CeO2-P catalyst with nanoplate-shaped CeO2 as the carrier and dispersed nickel nanoparticles, showing remarkable performance at 300 degrees C with high CO2 conversion rate and 100% CH4 selectivity. The catalyst also demonstrated excellent stability even under high WHSV, showcasing the potential for practical applications. Characterization revealed the crucial role of abundant oxygen vacancies in promoting the interaction between Ni metal and CeO2 support for enhanced catalytic performance. Additionally, in-situ DRIFTS technology provided insights into reaction intermediates and possible pathways for CO2 methanation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Fei Wang, Zairan Yu, Shuai Zhai, Yuanyuan Li, Yang Xu, Yuyang Ye, Xuejiao Wei, Jie Xu, Bing Xue
Summary: With the rapid development of transportation and vehicles, the elimination of NOx and CO has become a major concern. This study successfully prepared vacancy-rich CeO2 nanopencil supported CuO catalysts, which showed the highest catalytic activity for NO reduction by CO compared to other catalysts. The morphology control of CeO2 support was found to enhance the catalytic performance by enabling favorable electron transfer and increasing the density of surface oxygen vacancies and Cu+ species.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Biomedical
Jiankang Zhang, Yu Yang, Fengmin Qin, Tingting Hu, Xinshuo Zhao, Shichao Zhao, Yueqiang Cao, Zhe Gao, Zhan Zhou, Ruizheng Liang, Chaoliang Tan, Yong Qin
Summary: This study reports the generation and stabilization of oxygen vacancies on CeO2 nanorods by Pt nanoclusters at mild temperature, resulting in a highly efficient nanozyme (Pt/CeO2-x) for catalytic cancer therapy. The Pt deposited on CeO2 serves as a catalyst to generate and stabilize oxygen vacancies, and forms strong metal-support interactions with CeO2. The Pt/CeO2-x-350R exhibits excellent enzyme-mimicking catalytic activity, effectively eliminating cancer cells and ablating tumors in vitro.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Engineering, Chemical
Florian Maurer, Andreas Gaenzler, Patrick Lott, Benjamin Betz, Martin Votsmeier, Stephane Loridant, Philippe Vernoux, Vadim Murzin, Benjamin Bornmann, Ronald Frahm, Olaf Deutschmann, Maria Casapu, Jan-Dierk Grunwaldt
Summary: The study found that reductive pulse activation leads to an increase in overall catalyst activity and the generation of different particle size zones within the catalyst bed. Activation temperature and pulse length influence the noble metal particle size, and this activation method could potentially be applied to industrially relevant catalysts in the future.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Environmental Sciences
Jiuhui Li, Zhengfang Wu, Hongshi He, Wenxi Lu
Summary: In this study, the simulation optimization method was used to identify LNAPL groundwater contamination source (GCS). To improve the accuracy of the simulation model, an artificial intelligence ensemble surrogate model (AIESM) combining deep belief neural network (DBNN) and long short-term memory (LSTM) neural network was used. Empirical mode decomposition (EMD) and wavelet analysis were employed to denoise the observed concentrations, and their denoising effects were compared. The results showed that AIESM achieved the highest accuracy and could replace the actual simulation model to significantly reduce computation load and time.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yunjiang Zhang, Shuyuan Li, Miaojuan Xing, Qing Yuan, Hong He, Shaorui Sun
Summary: In drug design, developing a new rapid and generalizable drug design method is of great value. This study proposed a general model based on reinforcement learning combined with drug-target interaction to design new molecules based on different protein targets. The method used recurrent neural network molecular modeling and the drug-target affinity model as the reward function. It only required the information of a one-dimensional amino acid sequence, without the need for the three-dimensional structure and active sites of protein targets. This approach showed promising results in producing drugs similar to marketed drugs and designing molecules with better binding energy.
Article
Chemistry, Multidisciplinary
Biwu Chu, Yuan Liu, Hao Li, Yongcheng Jia, Jun Liu, Qing Cao, Tianzeng Chen, Peng Zhang, Qingxin Ma, Xiao Cheng Zeng, Joseph S. Francisco, Hong He
Summary: Using a flow tube reactor, it was discovered that N2O5 can be released from the TiO2 surface during the photocatalytic oxidation of NO2, which provides a previously unreported source of N2O5. The release rate of N2O5 from TiO2 depends on various factors including the initial NO2 concentration, relative humidity, O-2/N-2 ratio, and irradiation intensity. Experimental and theoretical studies show that this release is due to the reaction of NO2 with surface hydroxyl groups and electron holes on TiO2, followed by its combination with another NO2 molecule to form N2O5.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Zhi Liu, Guangyan Xu, Lingyou Zeng, Wei Shi, Yingjie Wang, Yanwei Sun, Yunbo Yu, Hong He
Summary: We prepared a PtPd-La1/Al2O3 catalyst with highly dispersed La species and Pt-PdO nanoparticles, showing significantly enhanced hydrothermal and long-term stability under the harsh conditions of simulated natural gas vehicle (NGV) exhaust. PdO nanoparticles can be anchored by highly dispersed La sites through electron transfer, inhibiting the sintering of Pd species during hydrothermal aging. Pt uniformly doped in PdO creates high-efficiency Pt sites and unsaturated Pd sites for water-resistance, further enhancing long-term stability. This work provides the potential to resolve tough challenges related to methane emission control on NGVs.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Jingjing Liu, Xiaoyan Shi, Yunbo Yu, Mengyuan Zhang, Diru Liu, Hong He
Summary: The HC resistance of CeWSnOx, V2O5-WO3/TiO2, and Cu-SSZ-13 catalysts was studied using propene, toluene, and n-pentane as model HCs. The CeWSnOx catalyst showed much better HC tolerance due to its strong HC oxidation capacity, which inhibited side reactions. In contrast, Cu-SSZ-13 and V2O5-WO3/TiO2 showed undesired HC ammoxidation reactions, especially in the presence of propene.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Zhongqi Liu, Yulong Shan, Shichao Han, Yu Fu, Jinpeng Du, Yu Sun, Xiaoyan Shi, Yunbo Yu, Hong He
Summary: The complex poisoning of Cu-KFI catalysts by SO2 and hydrothermal aging was investigated. SO2 poisoning restrained the low-temperature activity of Cu-KFI by the formation of H2SO4 and CuSO4. Hydrothermally aged Cu-KFI exhibited better SO2 resistance due to the reduction of Brunsted acid sites. SO2 poisoning promoted the high-temperature activity of hydrothermally aged Cu-KFI by triggering the formation of CuSO4.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Meng Gao, Zhuocan Li, Guangzhi He, Yulong Shan, Yu Sun, Hong He
Summary: This study reveals the origin of the distinct difference in selectivity of oxide catalysts in the NH3-SCR reaction. By combining experimental measurements and density functional theory calculations, the researchers demonstrate that the selectivity difference is determined by the gap in the energy barriers between N2 formation and N2O formation from the consumption of the key intermediate NH2NO. This work provides fundamental insights into the origin of selectivity in the selective catalytic reduction of NO.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Junlin Chen, Yulong Shan, Yu Sun, Wenqing Ding, Sen Xue, Xuewang Han, Jinpeng Du, Zidi Yan, Yunbo Yu, Hong He
Summary: This study investigated the effects of phosphorus on Cu-SSZ-39 catalysts before and after hydrothermal aging treatment. Phosphorus poisoning significantly decreased the low-temperature NH3-SCR catalytic activity, but this activity loss was alleviated by further hydrothermal aging treatment. Characterization techniques revealed that Cu-P species produced by phosphorus poisoning decreased the redox ability of active copper species, resulting in the observed low-temperature deactivation. However, after hydrothermal aging treatment, Cu-P species partly decomposed, leading to the recovery of low-temperature NH3-SCR catalytic activity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Maofan Li, Meng Gao, Guangzhi He, Yunbo Yu, Hong He
Summary: Mn doping can significantly enhance the low-temperature NH3-SCR activity of Ce-based oxide catalysts, providing important insights for the development of low-temperature Ce-based catalysts.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yanmin Dong, Hongkai Li, Shengzhong Wang, Hongshi He
Summary: This study examines the relationship between peatland development, lateral expansion, and carbon accumulation rate with climate and local conditions in the Baijianghe peatland. The results show that climate and local conditions have an important influence on carbon accumulation rates in the peatland.
SCIENCE CHINA-EARTH SCIENCES
(2023)
Article
Thermodynamics
Hong He, Yu Xing, Runguo Wang, Yonglai Lu, Liqun Zhang, Fanzhu Li
Summary: Non-pneumatic tires are targeted for their puncture resistance and low-energy consumption. This study proposes a new idea for conformal cooling layout in non-pneumatic tire molding molds and establishes a three-dimensional model for optimizing the cooling system. Through simulation and experiment, a semi-annular conformal cooling channel layout with significant improvements in pressure loss, cycle time, cooling time, and tire shrinkage rate is found. This optimized design can shorten production cycles, increase efficiency, reduce energy loss, and improve tire quality.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Engineering, Environmental
Yanwei Sun, Guangyan Xu, Yingjie Wang, Wei Shi, Yunbo Yu, Hong He
Summary: In this study, a series of encapsulated structured catalysts with palladium nanoparticles confined in hydrophobic silicalite-2 were prepared, which showed high catalytic activity and long-term stability for methane oxidation under harsh conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Hui Zhang, Zhihua Lian, Chunxi Lin, Ying Zhu, Wenpo Shan, Hong He
Summary: This study investigates the improvement of low-temperature activity and SO2 durability of ceria-based catalysts by Fe doping. The enhanced low-temperature activity is attributed to the improved redox properties, more active oxygen species, and enhanced adsorption and activation of NOx species. Fe doping also prevents sulfate deposition and alters the competitive adsorption behavior between NO and SO2, leading to excellent sulfur resistance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Yuanyuan Fu, Chang Liu, Hong He, Shaoqiang Wang, Lunche Wang, Zhijie Xie
Summary: Exploring spring phenology dynamics in the Greater Khingan Mountains, Northeast China, we found that preseason temperature strongly influenced the start of the growing season (SOS), while the effects of preseason precipitation and radiation varied by region. The SOS dates showed regional characteristics, with a gradual delay from north to south.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2023)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
