Article
Chemistry, Physical
Allison M. Arinaga, Selim Alayoglu, Ding Zheng, Tobin J. Marks
Summary: Supported V/Al2O3 materials show high selectivity for SODHP reaction, with propylene yields surpassing those of bulk systems. Isolated sulfided vanadium species are more active and selective than crystalline vanadium sulfide, and propylene selectivity is enhanced using S-2 as the oxidant.
Article
Chemistry, Physical
Jian Dou, Joey Funderburg, Kunran Yang, Junchen Liu, Dennis Chacko, Kui Zhang, Adam P. Harvey, Vasudev P. Haribal, S. James. Zhou, Fanxing Li
Summary: CO2-assisted oxidative dehydrogenation of propane (CO2-ODH) is a promising method for propylene production and CO2 utilization. This study focuses on designing CexZr1-xO(2)-mixed oxide-supported CrOx catalysts for CO2-ODH with enhanced selectivity and stability. The addition of Ce to the ZrO2 support greatly improves catalyst stability by enhancing coke resistance.
Review
Chemistry, Inorganic & Nuclear
Ziqiang Qu, Qiming Sun
Summary: This review summarizes the latest research progress in zeolite-supported metal catalysts for propane dehydrogenation (PDH) reactions, including synthesis methods, catalytic mechanisms, and structure-function relationships. It provides references and insights for the future design of highly efficient zeolite-supported metal catalysts for PDH applications.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Kang Xia, Takafumi Yatabe, Kentaro Yonesato, Tomohiro Yabe, Soichi Kikkawa, Seiji Yamazoe, Ayako Nakata, Kazuya Yamaguchi, Kosuke Suzuki
Summary: A feasible method was developed for preparing supported anionic gold nanoparticle catalysts using multivacant lacunary polyoxometalates, confirming the strong electronic interaction between gold nanoparticles and the polyoxometalates, allowing for sequential modulation of the electronic states of the catalysts. The catalyst prepared using [SiW9O34](10-) showed superior catalytic performance and stability compared to supported gold nanoparticle catalysts without this modification.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Allison M. Arinaga, Anik Biswas, Xinrui Zhang, Jeffrey Greeley, Tobin J. Marks
Summary: Sulfur vapor is an effective oxidant for propane dehydrogenation, showing promising performance and propylene selectivity with vanadium-based catalysts. The support of the vanadium catalyst has significant effects on its reducibility and activity. Compared to traditional oxide catalysts, sulfided surfaces have less secondary oxidation of propylene. Therefore, sulfur vapor is a potential alternative for propane oxidation.
Article
Chemistry, Multidisciplinary
Jie Zhang, Meng Wang, Zirui Gao, Xuetao Qin, Yao Xu, Zhaohua Wang, Wu Zhou, Ding Ma
Summary: The structural heterogeneity of supported metal catalysts has unique advantages in complex heterogeneous catalytic reactions. Rhodium catalysts with isolated Rh species exhibit high activity for the first step of dehydrogenation, while Rh ensemble sites are highly efficient for the successive reaction step. Only with the coexistence of both active structures can optimal reaction performance be achieved.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Tetsuo Umegaki, Miho Dobashi, Tsubasa Komuro, Yoshiyuki Kojima
Summary: Copper supported porous silica-alumina hollow sphere catalysts were prepared using surfactant micelles to control interparticle spaces in the hollow sphere shells. The catalysts showed high activity for nitrous oxide decomposition, and the carbon number of surfactant molecules influenced both the size of interparticle spaces and the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Xueya Dai, Fan Li, Xuefei Zhang, Tianlong Cao, Xingyu Lu, Wei Qi
Summary: Polydopamine hollow nanospheres as catalysts for ethylbenzene oxidative dehydrogenation exhibit exceptional catalytic performance, outperforming commercial nanocarbon materials, with high surface area and oxygen and nitrogen content, showing potential in green and sustainable chemical industrial processes.
Article
Nanoscience & Nanotechnology
Qiang Zhang, Xu Zhang, Da Lei, Shaoming Qiao, Qian Wang, Xiaoshan Shi, Chunhong Huang, Gaohong He, Fengxiang Zhang
Summary: Transition-metal alloy nanoparticles embedded in hollow carbon spheres (NiCo@HCS) were fabricated as electrocatalysts for separator modification. The NiCo@HCS-modified battery showed improved adsorption capacity, kinetics, and excellent electrochemical performance under high sulfur content conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wen-Ting Chen, Song Han, Zi-Teng Gao, Ming-Shuai Sun, Zhang-Min Li, Duan-Jian Tao
Summary: A simple and effective one-step pyrolysis method was developed to prepare highly efficient heterogeneous catalyst Mo2C@BNC-1000, which can convert flavanones into flavones through oxidative dehydrogenation. The catalyst exhibits excellent catalytic performance, good applicability, and reusability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Sergei A. Chernyak, Alexander L. Kustov, Dmitrii N. Stolbov, Marina A. Tedeeva, Oksana Ya. Isaikina, Konstantin I. Maslakov, Nadezhda V. Usol, Serguei V. Savilov
Summary: The study utilized different carbon materials as supports for Cr-based catalysts in CO2-assisted ODP, with oxidized CNT and pristine GNF supported catalysts exhibiting the best activity and propylene yield. The stability of these catalysts was attributed to their macro- and mesoporosity enhancing reagent and product diffusion, as well as the highest surface graphitization degree. GNFs and CNTs were found to be effective supports for CO2-ODP catalysts, outperforming activated carbon-supported catalysts.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Ali Farzaneh, Mojtaba Saei Moghaddam
Summary: Coating the non-selective support surface with a monolayer of active phase to reduce overoxidation is a current approach for commercializing propane oxidative dehydrogenation (PODH) catalysts, but it may increase the probability of overoxidation of propylene. Incorporating confinement agents onto the metal oxide support can be considered as an alternative solution to prevent hydrocarbons from reaching the support and overoxidizing.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Sudipta De, Antonio Aguilar-Tapia, Samy Ould-Chikh, Andrea Zitolo, Jean-Louis Hazemann, Genrikh Shterk, Adrian Ramirez, Jorge Gascon
Summary: Designing robust catalysts for high-temperature applications is crucial for chemical industries. In this study, all-silica zeolite was used as a support to create nanometric and single-site metal catalysts with enhanced stability for the non-oxidative dehydrogenation of ethane. Co was found to have the highest intrinsic activity, while Cr and V showed high stability against sintering.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Jihyeon Lee, Byung Gwan Park, Kiheon Sung, Hyeongeon Lee, Jihun Kim, Eonu Nam, Jeong Woo Han, Kwangjin An
Summary: This study investigates the reversible hydrogenation and dehydrogenation processes in a liquid organic hydrogen carrier (LOHC) system using a single-catalyst approach. Key hydrogen-involved catalytic behaviors, such as adsorption and migration, play crucial roles in reactivity. The findings demonstrate that employing a defective metal oxide support can facilitate these behaviors at the active sites on the catalyst surface during the LOHC process.
Article
Nanoscience & Nanotechnology
Kuang Sheng, Qingfeng Yi, A-Ling Chen, Yuebing Wang, Yuhui Yan, Huidong Nie, Xiulin Zhou
Summary: CoNi/NHCS-TUC-x composite materials, synthesized through a simple pyrolysis strategy, exhibit high ORR/OER electroactivity with different proportions of spherical carbon and tubular carbon, showing interesting bifunctional performance. The CoNi/NHCS-TUC-3 material demonstrates superior electrocatalytic performance for both ORR and OER, making it a promising candidate for rechargeable Zn-air batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)
