Article
Chemistry, Physical
Shuhao Li, Feng Wang, Zongli Xie, Derrick Ng, Boxiong Shen
Summary: A Fe@CeO2-ZIF-8 core-shell catalyst was synthesized, which exhibited better morphology, thermal stability, and higher specific surface area compared to the FeCe co-impregnated ZIF-8 catalyst. The Fe@CeO2-ZIF-8 catalyst showed higher CO-SCR catalytic activity and improved reducibility of reactive Fe species. The reaction mechanism was investigated and critical intermediates were identified.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Yu Guan, Yinhe Liu, Qiang Lv, Bo Wang
Summary: The successful synthesis of Fe decorated CeO2 microsphere catalysts with surface oxygen defect was achieved in this study, with 0.5Fe-CeO2 sample showing excellent catalytic performance for NO reduction. Fe doping efficiently regulated the Ce4+/Ce3+ redox couple and oxygen vacancy, enhancing the catalytic activity significantly.
MOLECULAR CATALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Lu Feng, Xiangdong Xing, Yueli Du, Zhenghua Shen, Hui Zhang, Liu Yang, Ming Lv
Summary: In this paper, the effect of KMnO4 modification on the performance of CuCeOx/Fe2O3 catalyst for CO oxidation in industrial flue gas was investigated. Various analytical techniques were employed to reveal the relationship between the structural properties and the catalyst performance. The results showed that KMnO4 modification led to an increase in catalytic activity, with 0.07 mol/L KMnO4 modified CuCeOx/Fe2O3 catalyst exhibiting a CO conversion of 78.2% at 160 degrees C. The modification also resulted in reduced grain size and improved dispersion of active particles, as well as an increase in oxygen-containing functional groups for anchoring metal particles and providing active oxygen species for CO oxidation.
Article
Chemistry, Physical
Quanquan Shi, Yuhang Wang, Song Guo, Zhong-Kang Han, Na Ta, Gao Li, Alfons Baiker
Summary: CuOx/CeO2 catalysts were prepared by depositing CuOx clusters onto ceria nanoparticles with different morphologies and were evaluated for NO reduction with CO. The catalytic performance depended strongly on the morphology of the support, with nanorods and nanopolyhedra showing the best performance. Oxygen vacancy defects played a crucial role in the reaction mechanism, with ceria polyhedra catalyst exhibiting the best performance in converting NO and CO to N-2.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Review
Engineering, Chemical
Jialin Song, Ziliang Wang, Xingxing Cheng, Xiuping Wang
Summary: This study reviews the state-of-art catalysts for NO reduction during coal combustion and discusses key steps in NO removal by CO, CH4, and H-2, as well as future prospects for improving catalyst performance.
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
Energy & Fuels
Lin-Cong He, Hua-Hui Xu, Xing-Yue Leng, Ling-Yun Jin, Ai-Ping Jia, Meng-Fei Luo, Jian Chen
Summary: In order to achieve high N2 selectivity in the oxidation of nitrogen-containing volatile organic compounds (NVOCs), excellent catalysts with high N2 selectivity need to be developed. CeO2 modified CuO/ZSM-5 catalysts with different CeO2 addition orders were prepared for diethylamine (DEA) oxidation. The addition of CeO2 changes the geometrical and electronic states of CuO active sites in the catalyst, and the CeO2 addition order affects the Ce3+ ratio on the surface of the catalyst. The CuO/CeO2/ZSM-5 catalyst exhibits moderate high oxidation activity and the widest temperature window (oT) for high N2 selectivity, which is T99 of 230 degrees C and oT of 150 degrees C. These preliminary results provide an efficient strategy for improving catalysts employed for selective oxidation of NVOCs.
Article
Chemistry, Physical
Jinyan Cao, Yutao Lin, Tianrun Shao, Qiulin Zhang, Ping Ning, Jianjun Chen, Guocai Tian, Liangtao Yin, Siyuan Xu, Rongbing Nie
Summary: Different preparation variables influence the SO2 reduction by CO over Ir/CeO2 catalyst by changing specific surface area, Ir0 species content, and oxygen vacancies concentration. Among the synthesized catalysts, Ir/CeO2-6 shows the highest crystallinity, smallest grain size, largest lattice parameter, largest pore size, and specific surface area. DFT results indicate that the adsorption energies of CO and SO2 at higher Ir loading are consistent with the stoichiometric ratio. Ir/CeO2-6 exhibits the highest Ce3+ content, OVs content, and Ir0 content, leading to the strongest Ir-O-Ce interaction and better catalytic activity. All the as-prepared catalysts follow the redox mechanism during reactions. This study provides insights into the influence of preparation method on microstructure and reaction activity, offering research ideas for efficient CeO2-based catalyst for SO2 reduction by CO.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zhihua Gao, Fengyan Fu, Zhaozhi Zhang, Lili Niu, Min Jin, Jian Zhang, Zekun Zhao
Summary: Support materials play a crucial role in the durability of iron oxides for chemical looping applications. This study investigates the effect of Gd3+, La3+, and Nd3+ doped CeO2 supports on hydrogen generation via chemical looping water gas shift. The results show that the dopants improve the oxygen vacancy concentration in the CeO2 lattice, leading to enhanced redox reactions. Fe2O3/CeO0.8Gd0.1La0.1O2-delta exhibits the highest hydrogen yield and generation rate due to its high oxygen vacancy concentration. Overall, this work highlights the importance of support properties in the reactivity of iron oxides for chemical looping applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Wei Tan, Yandi Cai, Shaohua Xie, Juntian Xu, Kaili Ma, Kailong Ye, Lu Ma, Steven N. Ehrlich, Weixin Zou, Fei Gao, Lin Dong, Fudong Liu
Summary: By optimizing the deposition process, highly dispersed CuO clusters on unique CeO2-Al2O3 support with small CeO2 particles were successfully constructed, which exhibited much higher NO removal efficiency and N2 selectivity compared to CuO catalysts supported on gamma-Al2O3 and conventional CeO2-Al2O3 support. H2O showed limited inhibition effect on the catalytic performance of the catalyst. The abundant Cu+/Ce3+ paired sites with surface synergetic oxygen vacancies on the catalyst effectively facilitated the adsorption and activation of CO and NO, thus significantly enhancing the NO removal efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yi Zhao, Wei Wang, Xinyi Yin, Linmei Wang, Shanshan Li, Jianli Wang, Yaoqiang Chen
Summary: In this study, aliovalent additives (La3+, Nd3+, Pr3+/4+, and Y3+) were introduced to CeO2-ZrO2-Al2O3 (CZA) to increase surface oxygen vacancies by surface modification. Among them, Pr showed the most significant promotion effect. The modified Pd/Pr/CZA catalyst exhibited the best conversion efficiency of C3H8 and NO, with a reduced light-off temperature (T90) comparing to Pd/CZA even after thermal aging at 900°C for 6 hours. (c) 2022 Published by Elsevier B.V.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Hamid Reza Khaledian, Pezhman Zolfaghari, Parastoo Delir Kheyrollahi Nezhad, Aligholi Niaei, Sirous Khorram, Dariush Salari
Summary: The synthesis of LaMnO3 nanocatalysts via sol-gel auto-combustion method, supported on CeO2 and treated with argon nonthermal glow discharge plasma, significantly improved the conversion rates of NO and CO. The plasma-treated nanocatalysts showed high stability, only losing 3.94% of their activity after 30 hours of operation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Xue Bian, Hanying Jia, Ming Cai, Peng Cen, Yuting Bai, Wenyuan Wu
Summary: The study of CeO2-Fe2O3 catalysts showed that the addition of CeO2 reduced the reaction temperature and improved NO conversion. With increasing Ce/Fe ratio, the main phase of the catalyst transformed gradually from iron oxide to ceria, and the specific surface area increased, enhancing the redox capacity and adsorption properties. The in situ infrared surface catalyst reaction involved a combination of the Langmuir-Hinshelwood mechanism and the Eley-Rideal mechanism, which improved denitration performance.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Environmental
Yajun He, Jun Liu, Guojie Zhang, Ying Wang, Yuqiong Zhao, Guoqiang Li, Yongfa Zhang, Dengke Lv
Summary: The establishment of strongly coupled heterojunction interfaces between composite metal oxide interfaces is crucial for enhancing the activity of CO-SCR catalysts. A CuCoO2 modified CeO2 catalyst (H-CuCo-CeO2) was synthesized and showed excellent low-temperature activity, achieving 100% NO conversion at 175 degrees C, and excellent resistance to H2O and SO2. Through various tests, the influence of the heterojunction interfaces on the reaction performance was investigated, and it was found that the modification of the CuCoO2 structure promoted the migration of Cun+ species, increased surface active sites, and caused the formation of oxygen vacancies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Xuemei Ou, Kean Chen, Longqing Wei, Yaqian Deng, Ju Li, Bin Li, Lihui Dong
Summary: The study shows that the activity of bayberry-like gamma-xCoFe(2)O(3) microsphere catalysts is significantly affected by the increasing Co doping amount. Doping an appropriate amount of cobalt can improve the catalytic performance of the samples, with 5Co-Fe exhibiting the highest activity and largest surface area.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Xuanxuan Jia, Hao Liu, Yu Zhang, Wei Chen, Qing Tong, Guangxia Piao, Chuanzhi Sun, Lin Dong
Summary: A novel Fe-Sb binary metal oxide catalyst was synthesized, showing excellent activity and stability in the NH3 selective catalytic reduction of NO reaction. The introduction of Sb improved the adsorption behavior of NOx species on the catalyst surface, contributing to enhanced efficiency of the NH3-SCR reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Wei Tan, Annai Liu, Shaohua Xie, Yong Yan, Thomas E. Shaw, Yu Pu, Kai Guo, Lulu Li, Shuohan Yu, Fei Gao, Fudong Liu, Lin Dong
Summary: Investigating catalytic reaction mechanisms can guide catalyst design, as demonstrated by the innovative CeO2-SiO2 mixed oxide catalyst (CeSi2) with excellent SO2/H2O resistance in harsh working conditions. The strong Ce-O-Si interaction and abundant surface hydroxyl groups on CeSi2 provide active acid sites and inhibit SO2 adsorption, enhancing the NH3-SCR performance through an enhanced Eley-Rideal mechanism. This work offers a strategy to develop an environmentally friendly NH3-SCR catalyst with superior SO2 resistance.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Mingxuan Li, Yandi Cai, Jinjin Zhang, Haixiao Sun, Zhi Li, Yujie Liu, Xin Zhang, Xiaoping Dai, Fei Gao, Weiyu Song
Summary: The study successfully enhanced the specific activity of ethanol oxidation reaction by synthesizing Pt3Ni nanowires with tailored structure, improving catalyst stability, and providing a promising pathway for the design and development of durable alloy nanocatalysts for direct ethanol fuel cell applications.
Article
Chemistry, Physical
Shuna Li, Yao Wang, Yunrui Li, Xu Fang, Yujie Liu, Mingxuan Li, Zhen Wang, Yufeng Gao, Haixiao Sun, Fei Gao, Xin Zhang, Xiaoping Dai
Summary: This study presents a simple method to synthesize e-PtNiCu NWs with high proportions of (110) and (100) facets, which exhibit remarkable performance in ethanol electrooxidation reaction. The improved performance of e-PtNiCu NWs is attributed to the synergistic catalytic effect between (110) and (100) facets. The thermodynamics and kinetic studies suggest that the synergistic effect of both facets can decrease the activation energy barrier and facilitate the charge transfer during the reaction.
Article
Chemistry, Physical
Shaohua Xie, Wei Tan, Yuejin Li, Lu Ma, Steven N. Ehrlich, Jiguang Deng, Peng Xu, Fei Gao, Lin Dong, Fudong Liu
Summary: In this study, an efficient NbCuCe oxide catalyst for reducing NOx emissions in cold-start diesel engines is reported. The catalyst exhibits higher DeNO(x) activity below 200 degrees C compared to the Cu-CHA zeolite catalyst, along with superior sulfur resistance, faster response, and lower NH3 slip. Atomically dispersed Cu species facilitate strong interaction between Cu and the Nb/Ce base catalyst, leading to improved low-temperature redox properties and NH3 adsorption/activation. The developed NbCuCe catalyst shows promising potential for efficient DeNO(x) in cold-start diesel engines and can be combined with Cu-CHA for a broader temperature range of operation.
Article
Chemistry, Physical
Shuna Li, Haixiao Sun, Jiaai Zhang, Longjiao Zheng, Yunrui Li, Xu Fang, Yujie Liu, Qi Song, Zhen Wang, Yufeng Gao, Xin Zhang, Xiaoping Dai, Yandi Cai, Fei Gao
Summary: Strengthening the oxide-metal interfacial synergistic interaction in nanocatalysts is an effective strategy to enhance the intrinsic activities and availability of active sites. In this study, SnO2/PtNi concave nanocubes enclosed by high-index facets were successfully fabricated and exhibited significantly improved catalytic performance for electrooxidation reactions. The strong interfacial interaction between SnO2 and PtNi not only reduces the activation energy barrier but also enhances the catalyst's CO-resistance and long-term stability.
Article
Chemistry, Physical
Zhonghui Cui, Song Song, Huibin Liu, Yingtian Zhang, Fei Gao, Tong Ding, Ye Tian, Xiaobin Fan, Xingang Li
Summary: By constructing dual-site copper catalysts with Cu+ single atoms and Cu nanoparticles, this study successfully enhances the water-gas shift reaction, increasing CO adsorption and catalytic activity, especially performing better at low temperatures.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Wei Tan, Shaohua Xie, Xin Wang, Juntian Xu, Yong Yan, Kaili Ma, Yandi Cai, Kailong Ye, Fei Gao, Lin Dong, Fudong Liu
Summary: In this study, an efficient CuO catalyst supported on a CeO2-Al2O3 support (CA-T) prepared by two-step incipient wetness impregnation (T-IWI) method was successfully developed. The Cu/CA-T catalyst exhibited better catalytic performance in CO oxidation and NO reduction by CO (NO + CO reaction) as well as higher thermal stability compared to the CuO catalyst loaded on conventional CeO2-Al2O3 support (Cu/CA). The microstructure of CuO-CeO2-Al2O3 catalysts, especially the state of Cu species, was systematically investigated using various characterization techniques. The mechanisms of CO oxidation and NO + CO reactions on Cu/CA and Cu/CA-T catalysts were collaboratively revealed.
Article
Chemistry, Applied
Yandi Cai, Peng Yang, Qinglong Liu, Kaili Ma, Wenxin Ma, Wang Song, Qiuhui Qian, Fei Gao, Wei Tan, Lin Dong
Summary: Sulfation treatment with different durations was performed on PrOx, and it was found that the catalytic performance of sulfated PrOx in the NH3-SCR of NO is highly dependent on the sulfation time. This study provides new insights into tuning the interaction between the PrOx surface and reactants (NO, NH3) via sulfation treatment, which can guide the design and application of PrOx-based catalysts for NH3-SCR of NO in the future.
JOURNAL OF RARE EARTHS
(2023)
Article
Multidisciplinary Sciences
Wei Tan, Shaohua Xie, Duy Le, Weijian Diao, Meiyu Wang, Ke-Bin Low, Dave Austin, Sampyo Hong, Fei Gao, Lin Dong, Lu Ma, Steven N. Ehrlich, Talat S. Rahman, Fudong Liu
Summary: Constructing single atom catalysts with fine-tuned coordination environments can lead to satisfactory catalytic performance. By controlling the calcination temperature, CeO2 supported Pt single atom catalysts with precisely controlled coordination environments were successfully synthesized. The different Pt-CeO2 coordination environments have an impact on reactant adsorption/activation and product desorption, thus resulting in different catalytic performance.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Lipeng Ding, Shaoxiong Zhang, Qinglong Liu, Peng Yang, Yandi Cai, Wei Tan, Wang Song, Fei Gao, Lin Dong
Summary: Catalysts for Nb/CeSi2 with different loadings of niobium were synthesized and evaluated for NH3-SCR performance over a broad temperature range. The 20Nb/CeSi2 catalyst exhibited the best low-temperature NH3-SCR performance while maintaining excellent SO2/H2O resistance. The addition of niobium resulted in variations in the surface structure, specific surface area, and acidity of the catalyst, which facilitated the SCR reaction. The interaction between niobium and ceria was found to enhance the activation of inert surface nitrate, contributing to the improvement of the catalyst performance at low temperature.
CHEMICAL PHYSICS IMPACT
(2023)
Article
Engineering, Environmental
Wei Tan, Shaohua Xie, Yandi Cai, Haowei Yu, Kailong Ye, Meiyu Wang, Weijian Diao, Lu Ma, Steven N. Ehrlich, Fei Gao, Lin Dong, Fudong Liu
Summary: A highly efficient Pt single-atom catalyst was constructed for the catalytic oxidation of C3H8 by calcination of Pt catalysts on pre-stabilized Ce0.9Zr0.1O2 support. The Pt single atoms with different strengths of Pt-CeO2 interaction and coordination environment were successfully achieved by controlling the calcination temperatures. The Pt/CZO-750 catalyst exhibited higher C3H8 oxidation activity than Pt/CZO-550, attributed to the higher concentration of surface Ce3+ species/oxygen vacancies and stronger Pt-CeO2 interaction.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Wei Tan, Yandi Cai, Haowei Yu, Shaohua Xie, Meiyu Wang, Kailong Ye, Lu Ma, Steven N. Ehrlich, Fei Gao, Lin Dong, Fudong Liu
Summary: This study proposes a facile ZrO2 doping strategy to construct Pt-1/CexZr1-xO2 catalysts for eliminating harmful NH3 slip from stationary flue gas denitrification and diesel exhaust aftertreatment systems. The study finds that Pt/Ce0.9Zr0.1O2 catalyst exhibits the strongest Pt-CeO2 interaction and highest Pt-O-Ce coordination number, resulting in superior NH3 oxidation activity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Peng Yang, Juntian Xu, Wei Tan, Qinglong Liu, Yandi Cai, Shaohua Xie, Song Hong, Fei Gao, Fudong Liu, Lin Dong
Summary: The catalytic oxidation performance of the Pt-1/CeO2 catalyst was greatly improved with the introduction of potassium species. Potassium ions acted as structural and electronic promoters, forming Pt-O-K interactions with Pt to directly regulate the coordination environment and electronic state of Pt, as well as the metal-support interaction between Pt and CeO2.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Fei Gao, Annai Liu, Wei Tan, Bing Hu, Ruihan Gong, Xing Cheng, Fudong Liu, Ge Chen, Lin Dong
Summary: A Ti3+-rich rutile TiO2 with a surface lattice expansion structure was prepared by H-2 treatment. The supported Pt single atoms on this surface were stabilized in a highly oxidized state and had a weaker affinity for CO, resulting in robust catalytic performance.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)