Article
Nanoscience & Nanotechnology
Andrea Mussio, Maila Danielis, Nuria J. Divins, Jordi Llorca, Sara Colussi, Alessandro Trovarelli
Summary: Bimetallic Pt-Pd catalysts supported on ceria show improved performance in wet conditions, possibly due to the formation of unique mushroom-like structures resulting from the alloying of Pt and Pd. Catalyst prepared by milling Pd metal and ceria first, followed by the addition of Pt, exhibits better performance compared to conventional impregnated samples.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yu Yang, Gang Wang, Sida Ge, Huanhuan Yang, Meijia Liu, Menglin Liu
Summary: This paper investigates the preparation and anti-sulfur dioxide poisoning performance of mesoporous catalysts. Results show that PdePt/MgO/gamma-Al2O3 catalyst can maintain catalytic activity after regeneration.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Wenjie Sun, Yijia Huang, Xiaomin Li, Zhen Huang, Hualong Xu, Wei Shen
Summary: Cu-CeOx-MOF catalysts with well-dispersed Cu in different contents were synthesized via the ethylenediaminetetraacetic acid (EDTA) grafting method, with Cu-CeOx-MOF-0.2 showing outstanding catalytic activity and stability, as well as better low-temperature reducibility.
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, Physical
Zhiqiang Wang, Lixin Zhang, Jiawei Ji, Yuchao Wu, Yandi Cai, Xiaojiang Yao, Xianrui Gu, Yan Xiong, Haiqin Wan, Lin Dong, Yu-Wen Chen
Summary: The study presents a novel catalyst Ir/Ce/gamma-Al2O3 for complete oxidation of toluene, featuring small CeO2 and Ir-0 nanoparticles that exhibit higher catalytic activity. Results from XRD, TEM, Raman, and XPS indicate a strong interaction between IrO2 and small CeO2 nanoparticles, leading to enhanced catalytic performance. This development in synthesizing iridium-based catalysts shows promise for the catalytic oxidation of VOCs.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Applied
Motaz Khawaji, Ines Graca, Ecaterina Ware, David Chadwick
Summary: AuxPdy nanoparticles prepared by colloidal synthesis and immobilised on ceria nanorods exhibit excellent catalytic performance in the selective oxidation of glucose, with activity strongly dependent on bimetallic composition. The catalyst shows good recyclability and high selectivity, with defects on the ceria nanorods surface serving as anchoring sites for the nanoparticles.
Article
Chemistry, Physical
Lidiya Kibis, Andrey Zadesenets, Ilia Garkul, Arina Korobova, Tatyana Kardash, Elena Slavinskaya, Olga Stonkus, Sergey Korenev, Olga Podyacheva, Andrei Boronin
Summary: The study focused on the preparation and characterization of Pd-Ce-O-x/MWCNTs and Pt-Ce-O-x/MWCNTs catalysts using multi-walled carbon nanotubes. The Pd-based catalysts showed higher activity in CO and CH4 oxidation reactions, while the Pt-Ce-O-x/MWCNTs catalyst exhibited strong catalytic activity in low-temperature CO oxidation.
Article
Chemistry, Physical
Yu Hao, Shaohua Chen, Xueyin Zhang, Tiehong Chen
Summary: Pt-1/CeO2 nanospheres (Pt/CeO2-NS) were synthesized using the bath oiling method with L-asparagine as an additive. The addition of L-asparagine allows CeO2 nanospheres to retain their structure and exhibit stronger interaction with highly dispersed Pt. The toluene catalytic combustion performance of Pt/CeO2-NS was investigated, and it was found that the catalyst exhibited superior activity compared to the commercial CeO2-supported Pt catalyst, which can be attributed to its higher oxygen vacancy and Pt4+ content.
Article
Chemistry, Physical
Jia Zeng, Hongmei Xie, Zhao Liu, Xuecheng Liu, Guilin Zhou, Yi Jiang
Summary: This study demonstrates the tuning of oxygen vacancies on alpha-MnO2 for catalytic toluene oxidation, resulting in superior activity and stability. The control of oxygen vacancies weakens the Mn-O bond strength, increases the amount of surface adsorbed active oxygen species, and promotes catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yi-Jie Lao, Xing-Xing Jiang, Ju Huang, Zhen Zhang, Xing-Yi Wang
Summary: The La/Ce(0.5)Mn(0.5) catalyst prepared by wetness impregnation showed high activity and stability in the catalytic oxidation of ethyl acetate, converting it into CO2 with high efficiency. The intermediates identified were mainly ethanol and acetaldehyde, with concentrations below certain levels. The dissociative adsorption modes of ethyl acetate on the catalyst surface were found to be related to the surface oxygen species, affecting the stability and selectivity of the catalyst.
Article
Chemistry, Physical
Paul K. Huttunen, Daniela Labadini, Genevieve Asselin, Sabrina S. Hafiz, Sumeyra Gokalp, Maria D. Kipreos, Michelle Foster
Summary: The oxidation mechanism of toluene on heat-treated CeO2 nanoparticles was studied. It was found that toluene can chemisorb to the CeO2 surface, forming either monobound or bridged benzyloxy groups. The oxidation of bridged benzyloxy groups is directly related to benzoate production. Temperature dependent peak height analysis revealed the oxidation state of bidentate benzoate groups. Surface lattice oxygens and b-hydroxyl groups facilitate the chemisorption of toluene as benzyloxy groups. The role of surface hydroxyls in the transformation of benzyloxy groups to benzoate groups was also identified.
Article
Materials Science, Ceramics
Igor V. Zagaynov, Anatoly A. Konovalov
Summary: A series of CeO2-TiO2 composites were synthesized using the sol-gel method, and their structures were investigated using HR TEM, XRD, TG-DSC-MS, N2 adsorption-desorption isotherms. The titania coating layer consisting of fine crystallites contributes to the properties of the CeO2@TiO2 nanocomposite. A fast, simple, and facile route for synthesizing novel CeO2@TiO2 core-shell nanocomposite particles was suggested. Increasing the concentration of the titania precursor was found to increase the shell thickness but also led to the formation of a small amount of independent titania clusters. The increase in titania content resulted in a larger proportion of the rutile phase and a decrease in the proportion of metastable anatase and brookite, while reducing the particle size of the initial ceria core and the specific surface area due to the closer connections between nanoparticles caused by the titania shells.
CERAMICS INTERNATIONAL
(2023)
Article
Energy & Fuels
Xuxu Zhai, Luming Li, Shuang Song, Junjun Zhang, Jun Ma, Chongrui Xie, Wei Chu
Summary: A series of MnO2 catalysts with different crystal forms were successfully synthesized by inducing self-doping of Mn through bridging interaction with carboxyl group. Among them, the dual crystal structure catalyst, MnCA-4, demonstrated the best catalytic performance in toluene oxidation, attributed to the interaction between different crystal structures. The study also revealed that MnCA-4 catalyst had stronger adsorption and activation abilities towards toluene.
Article
Engineering, Environmental
Yuanshuang Zheng, Maya Marinova, Pascal Granger
Summary: The kinetics of the catalytic CH4/O-2 reaction on Pd/LaxMnO3 catalysts with different compositions (x = 0.7, 1.0, and 1.3) was studied. It was found that on Pd/La1.3MnO3 with a La-rich surface, a single site reaction mechanism was preferred, while on Pd-La0.7MnO3 with a Mn-rich surface, a dual-site reaction mechanism involving both Pd and surface reactive oxygen species was observed. High surface Pd/Mn ratio and high concentration of Pd-n(+) (n > 2) were identified as good indicators for the efficacy of Pd/LaxMnO3 catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
An-Chih Yang, Verena Streibel, Tej S. Choksi, Hassan Aljama, Baraa Werghi, Simon R. Bare, Roel S. Sanchez-Carrera, Ansgar Schaefer, Yuejin Li, Frank Abild-Pedersen, Matteo Cargnello
Summary: Hydrocarbon combustion is crucial in emission control applications, and developing efficient catalysts optimized for noble metal use is imperative. Pt-rich catalysts were found to perform best for both propane and propene oxidation reactions. However, contrasting trends in rate orders, active phase, and stability were observed due to different rate-limiting steps and interactions between the two compounds.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
Benjawan Moongraksathum, Yu-Wen Chen
JOURNAL OF POROUS MATERIALS
(2019)
Article
Management
Yuwen Chen, John Ni, Degan Yu
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2019)
Article
Engineering, Electrical & Electronic
Yuwen Chen, Jose-Fernan Martinez-Ortega, Pedro Castillejo, Lourdes Lopez
IEEE SENSORS JOURNAL
(2019)
Article
Biotechnology & Applied Microbiology
Anton S. Brichkov, Anastasiya N. Shamsutdinova, Olga S. Khalipova, Anastasiya O. Rogacheva, Tatyana V. Larina, Tatyana S. Glazneva, Svetlana V. Cherepanova, Evgeny A. Paukshtis, Alexander A. Buzaev, Vladmir V. Kozik, Yu-Wen Chen
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2019)
Article
Computer Science, Theory & Methods
Xiaolong Liu, Khan Muhammad, Jaime Lloret, Yu-Wen Chen, Shyan-Ming Yuan
FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE
(2019)
Article
Chemistry, Multidisciplinary
Benjawan Moongraksathum, Min-Yuan Chien, Yu-Wen Chen
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2019)
Article
Materials Science, Ceramics
Anton S. Brichkov, Victiria Yu Brichkova, Evgeniy A. Paukshtis, Yu-Wen Chen, Vladimir V. Kozik
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2020)
Article
Multidisciplinary Sciences
Liudmila A. Rasskazova, Ilya Zhuk, Natalia M. Korotchenko, Anton S. Brichkov, Yu-Wen Chen, Evgeniy A. Paukshtis, Vladimir K. Ivanov, Irina A. Kurzina, VladimirV Kozik
SCIENTIFIC REPORTS
(2019)
Article
Chemistry, Physical
Xiaoyu Weng, Bingqing Shi, Annai Liu, Jingya Sun, Yan Xiong, Haiqin Wan, Shourong Zheng, Lin Dong, Yu-wen Chen
APPLIED SURFACE SCIENCE
(2019)
Article
Energy & Fuels
Yu-Ching Cheng, Yu-Wen Chen, Te-Chin Chang, Shiow-Kang Yen
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Crystallography
Tamara Minakova, Sergey Mjakin, Vadim Bakhmetyev, Maxim Sychov, Ilya Zyatikov, Irina Ekimova, Vladimir Kozik, Yu-Wen Chen, Irina Kurzina
Article
Computer Science, Information Systems
Yuwen Chen, Jose-Fernan Martinez-Ortega, Pedro Castillejo, Lourdes Lopez
IEEE SYSTEMS JOURNAL
(2020)
Article
Computer Science, Information Systems
Chien-Hung Yeh, Chien-Ming Luo, Yue-Ru Xie, Chi-Wai Chow, Yu-Wen Chen, Tzu-An Hsu
Article
Biotechnology & Applied Microbiology
Yu-Wen Chen, Ying-Chieh Yeh, Hsueh-Fen Chen, Ruei-Ching Chen, Guan-Yu Lin, Yu-Ting Chen, Chung-Yu Lan
FEMS YEAST RESEARCH
(2019)
Article
Computer Science, Information Systems
Yuwen Chen, Jose-Fernan Martinez, Pedro Castillejo, Lourdes Lopez