Review
Chemistry, Inorganic & Nuclear
Yitao Zhao, Hongmei Cao, Lei Tao, Zhiyong Qiao, Changming Ding
Summary: Single-atom catalysts (SACs) are a new type of catalyst that exhibit 100% metal dispersion and maximized metal atom utilization, making them highly promising for catalytic reactions such as benzene oxidation to phenol. Extensive efforts have been made to develop efficient SACs for benzene oxidation, resulting in successful fabrication of various metal SACs. This comprehensive review summarizes the recent research progress in SACs for boosting benzene oxidation, focusing on the roles of metal atoms and supports, and highlighting the applications of advanced SACs and their structure-activity correlation.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Igor Yu. Kaplin, Ekaterina S. Lokteva, Konstantin I. Maslakov, Artem V. Tikhonov, Andrey N. Kharlanov, Alexander V. Fionov, Alexey O. Kamaev, Oksana Ya. Isaikina, Sergey V. Maksimov, Elena V. Golubina
Summary: This study focused on the synthesis and characterization of mesoporous CeO2-SiO2 catalysts with different Ce:Si ratios, as well as the addition of copper for modification, to understand their effects on CO-PROX reactions. The catalyst with an equimolar Ce:Si ratio showed better catalytic performance, while CuOx/CeSiO (Ce:Si=4:1) exhibited superior low-temperature activity, CO2 selectivity, and stability due to its unique structure and properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
P. Brussino, M. A. Ulla, E. D. Banus
Summary: This study investigates the removal of phenol from water using the Catalytic Wet Peroxide Oxidation (CWPO) reaction. The results show that increasing the calcination temperature leads to a decrease in reducible Cu2+ species, which affects the phenol conversion rate. At lower temperatures (500 - 800 degrees C), copper is well-distributed on the support and high mineralization values (above 85%) are obtained. However, at higher temperatures (850 and 900 degrees C), copper migrates to the inner part of the coating, resulting in lower copper leaching and lower mineralization degrees.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Energy & Fuels
P. Brussino, M. A. Ulla, E. D. Banus
Summary: In this work, the elimination of phenol from water using the Catalytic Wet Peroxide Oxidation (CWPO) reaction was investigated. CuO/TiO2-ZrO2 supported on wire-meshes with varying calcination temperatures were studied. The results showed that higher calcination temperatures resulted in reduced reducible Cu2+ species, leading to slower phenol conversion rates. On the other hand, lower temperatures demonstrated well-distributed copper on the support and high mineralization values. An adequate temperature of 850 degrees C was found to have higher mineralization and better mechanical resistance compared to 900 degrees C.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Chemistry, Physical
Chih-Huang Weng, Chong-Yi Liao, Jing-Hua Tzeng, Ying-Chen Chen, Jin Anotai, Yao-Tung Lin
Summary: Developing oxygen vacancies in nanomaterials is an effective method to enhance catalytic performance. In this study, a novel low-cost ternary iron-manganese-copper mixed oxide catalyst with abundant oxygen vacancies was successfully synthesized. Characterization analyses revealed the metal valence transformation, synergy structure, and role of oxygen vacancies in the catalyst, demonstrating its excellent catalytic oxidation performance. The stable and active structure of the catalyst after oxidizing ethylene suggests a redox cycle of catalytic mechanism. This work provides valuable insights into the development of high-performance and stable catalysts with abundant oxygen vacancies for VOCs elimination.
APPLIED SURFACE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Jinhui Xu, Lingling Li, Jing Pan, Wenjie Cui, Xi Liang, Yang Yu, Bo Liu, Xiao Wang, Shuyan Song, Hongjie Zhang
Summary: In this study, a Cu-Ce mixed metal oxide catalyst was fabricated and showed excellent catalytic performance in CO2 hydrogenation. The results indicate the significance of the interactions between CuOx and CeO2 in promoting the activation of H2 and CO2.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Chemistry, Multidisciplinary
Yi Xing, Zefeng Guo, Wei Su, Hui Zhang, Jing Chen, Jinglei Tian, Jichao Yuan, Di Wu
Summary: Selective catalytic reduction technology is widely used for NOx control, but the preparation process of catalysts is complicated and costly. In this study, a novel low-cost catalyst was prepared by treating vanadium-bearing steel slag with calcination modification and sulfuric acid modification. The results showed that sulfuric acid modification greatly improved the denitration activity of the catalyst, and calcination before modification further enhanced its activity. The catalyst exhibited high NOx removal efficiency and demonstrated good water and sulfur resistance. The study provides a new idea for reducing catalyst cost and promoting cleaner production.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Tahrizi Andana, Kenneth G. Rappe, Nicholas C. Nelson, Feng Gao, Yong Wang
Summary: A composite catalyst made of ceria-manganese oxide and Cu-SSZ-13 shows improved selective catalytic reduction (SCR) of NOx by ammonia at low temperatures, primarily through the interaction of the oxide phase with Bronsted acid bound NH3.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Mingqiang Chen, Jinhui Zhang, Yishuang Wang, Zhiyuan Tang, Jingjing Shi, Chunsheng Wang, Zhonglian Yang, Jun Wang, Han Zhang
Summary: In this study, Mo/SEP catalysts were prepared by an incipient-wetness impregnation method and it was found that calcination at 400 degrees Celsius exhibited optimal catalytic activity, resulting in the highest lignin oil yield.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Aggeliki Papavasiliou, Benedetta Oliani, Mirko Scanferla, Elias Sakellis, Antonella Glisenti, Paolo Canu, Fotis K. Katsaros
Summary: Mesoporous multicomponent materials based on alumina are synthesized through a facile evaporation-induced-self-assembly method. The addition of citric acid is found to be crucial in obtaining high mesoscopic order and notable homogeneity. After thermal aging, the distribution of metal oxides and nanoporous nature are well-preserved, with a parallel nucleation of ceria nanoparticles into the semi-crystalline framework. The catalytic activity is drastically enhanced, especially for the Cu-Ce-Al system, due to the material's structural reconstruction and its effect on metal-support interaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Biotechnology & Applied Microbiology
Yanfeng Wen, Shunzheng Zhao, Honghong Yi, Fengyu Gao, Qingjun Yu, Jun Liu, Tian Tang, Xiaolong Tang
Summary: In this study, mixed metal oxides with different Ni/Cu molar ratios were prepared using nickel-copper-iron layered double hydroxides as precursors, and the influence of calcination temperature on their catalytic oxidation reaction was investigated. The synthesized catalysts showed excellent catalytic activity and stability under specific conditions. The characterization methods revealed the intermediate product and deactivation mechanism of the oxidation reaction.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Inorganic & Nuclear
Yitao Zhao, Haoran Xing, Qiang Wang, Yinjuan Chen, Jiawei Xia, Hui Xu, Guangyu He, Fengxiang Yin, Qun Chen, Haiqun Chen
Summary: Efficient and selective oxidation of arene C-H bonds has long been a challenging goal. Here, we present a facile and practical strategy to fabricate an N-doped reduced graphene oxide (NRGO) based single-atom Cu catalyst (SACu-NRGO) for the selective oxidation of benzene to phenol at room temperature. The SACu-NRGO exhibits excellent catalytic performance with a selectivity of 98.6% towards phenol, thanks to the fully exposed and homogeneously dispersed CuN3 active sites anchored by adjacent pyrrolic N atoms in the NRGO skeleton. Furthermore, the structure of the single-atom active sites and the mechanism of the oxidation process are elucidated in depth through DFT calculations.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Organic
Shengyang Ni, Josep Cornella
Summary: A catalytic protocol using a nickel catalyst and N2O has been presented for the conversion of aryl thianthrenium salts to the corresponding phenols. This method allows for the hydroxylation of functionalized molecules and tolerates various functional groups. Capitalizing on the high selectivity in introducing the thianthrene unit into aryl groups, this method represents a formal hydroxylation of aromatic C-H bonds.
Article
Chemistry, Physical
Hao Zhang, Xiaohui Gao, Binwei Gong, Shijie Shao, Chensheng Tu, Jun Pan, Yangyang Wang, Qiguang Dai, Yanglong Guo, Xingyi Wang
Summary: MoOx/CeO2 catalysts with different forms of MoOx on CeO2 were prepared for the catalytic oxidation of 1,2-dichloroethane. The acidity and surface oxygen from CeO2 domain play important roles in the activity of the catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Wonsik Jang, Sinmyung Yoon, Jaejung Song, Jihun Kim, Kwangjin An, Seungho Cho
Summary: The phase transformation of LDHs into spinels and delafossites allows for the preparation of phase-pure MMO catalysts. Spinel catalysts exhibit higher CO oxidation activities, greater redox properties, and improved active sites for CO adsorption compared to delafossites, showing that crystal structures greatly influence the catalytic properties of the end products.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Chemistry, Applied
Karim Danoun, Younes Essamlali, Othmane Amadine, Rida Tabit, Aziz Fihri, Christophe Len, Mohamed Zahouily
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
Article
Green & Sustainable Science & Technology
Younes Essamlali, Othmane Amadine, Aziz Fihri, Mohamed Zahouily
Article
Chemistry, Organic
Az-Eddine El Mansouri, Mohamed Zahouily, Hassan B. Lazrek
SYNTHETIC COMMUNICATIONS
(2019)
Article
Biotechnology & Applied Microbiology
Chiraa Elidrissi Elhassani, Younes Essamlali, Meryem Aqlil, Annie Moussemba Nzenguet, Ikram Ganetri, Mohamed Zahouily
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2019)
Article
Chemistry, Physical
Boubker Ouadil, Othmane Amadine, Younes Essamlali, Omar Cherkaoui, Mohamed Zahouily
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2019)
Article
Environmental Sciences
Dalia Allouss, Younes Essamlali, Achraf Chakir, Samia Khadhar, Mohamed Zahouily
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Polymer Science
Chiraa Elidrissi Elhassani, Abdelouahed El Gharrak, Younes Essamlali, Salma Elamiri, Karim Danoun, Soumia Aboulhrouz, Mohamed Zahouily
Summary: The study aimed to develop a novel waterborne chitosan-based coating formulation for slow-release urea fertilizer. The coating formulations were made by blending chitosan and polyvinyl alcohol, followed by the addition of lignin nanoparticles. The results showed that the Cs/PVA-LNPs (3%) formulation exhibited suitable physicochemical characteristics and prolonged the longevity of the coated urea fertilizer compared to the neat Cs/PVA.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Dalia Allouss, Younes Essamlali, Othmane Amadine, Achraf Chakir, Mohamed Zahouily
Article
Chemistry, Multidisciplinary
Othmane Amadine, Younes Essamlali, Abdallah Amedlous, Mohamed Zahouily
Article
Chemistry, Multidisciplinary
Mohammed Majdoub, Younes Essamlali, Othmane Amadine, Ikram Ganetri, Mohamed Zahouily
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Hicham Abou Oualid, Othmane Amadine, Younes Essamlali, Issam Meftah Kadmiri, Hicham El Arroussi, Mohamed Zahouily
NANOSCALE ADVANCES
(2019)
Article
Chemistry, Multidisciplinary
Abdallah Amedlous, Othmane Amadine, Younes Essamlali, Karim Daanoun, Mina Aadil, Mohamed Zahouily
Article
Chemistry, Physical
Houda Maati, Othmane Amadine, Younes Essamlali, Aziz Fihri, Abdallah Rhihil, Christophe Len, Mohamed Zahouily