Article
Multidisciplinary Sciences
Ali Hussain Motagamwala, Rawan Almallahi, James Wortman, Valentina Omoze Igenegbai, Suljo Linic
Summary: Silica-supported platinum-tin nanoparticles can function as a PDH catalyst with excellent stability and selectivity to propylene, without Pt-Sn segregation and tin oxide phase formation over the catalyst support.
Article
Chemistry, Multidisciplinary
Tingting Zhang, Chunlei Pei, Guodong Sun, Sai Chen, Zhi-Jian Zhao, Shijia Sun, Zhenpu Lu, Yiyi Xu, Jinlong Gong
Summary: The synergy between metals and metal oxides effectively improves the propane dehydrogenation process. The presence of Pt in Pt-GaOx promotes the activation of C-H bonds in propane. Under optimal conditions, the relative propylene formation rate of Pt-GaOx with 0.03 wt% Pt exceeds 25% of the summed contribution of individual components.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Applied
E. Lazareva, V. M. Bondareva, D. A. Svintsitskiy, A. Ishchenko, A. S. Marchuk, E. P. Kovalev, T. Yu Kardash
Summary: The modification by Nd, Mn, Ga, and Ge greatly influences the properties of MoVNbTeO oxides in ODE. The introduction of modifying additives changes the content of M1 phase, surface acidity, and surface composition, leading to positive effects on catalytic properties at a certain ratio.
Article
Chemistry, Physical
Li Li, Jason A. Chalmers, Simon R. Bare, Susannah L. Scott, Fernando D. Vila
Summary: In this study, the experimental characteristics of Ga(I) oxidation state were investigated by recording Ga K-edge X-ray absorption spectra for several well-defined molecular and crystalline Ga(I) compounds. Compared to trigonal Ga(III)-containing materials, Ga(I) spectra displayed a significantly more intense white line feature. Theoretical simulations confirmed this observation and revealed that the strong XANES intensity originated from transitions to several empty, nearly degenerate p-like states.
Article
Chemistry, Physical
Roghayeh Bardool, David P. Dean, Hien N. Pham, Abhaya K. Datye, Sona Raeissi, Mohammad Reza Rahimpour, Jeffery T. Miller
Summary: In this study, Ga/gamma-Al2O3 catalysts were evaluated for propane dehydrogenation (PDH). The results showed that the selectivity of propylene decreased with increasing propane conversion. It was found that propylene is a primary product, while light gas by-products are secondary products. The study also confirmed that the same light gas products can be produced by a direct reaction of propylene.
JOURNAL OF CATALYSIS
(2023)
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.
Article
Chemistry, Physical
Wei Zhou, Yulin Jiang, Zhiguo Sun, Shiqi Zhou, Erpai Xing, Yang Hai, Guanghao Chen, Yuetong Zhao
Summary: This study found that Ga/Na-SSZ-39(9) catalyst exhibited high dehydrogenation activity and excellent catalytic stability, which could be attributed to the large number of acid sites and unique channel structure.
Article
Chemistry, Physical
Xueya Dai, Tianlong Cao, Xingyu Lu, Yunli Bai, Wei Qi
Summary: A dual-path dehydrogenation route was developed to convert ethylbenzene to styrene efficiently using a Pd/hollow nanocarbon spheres catalyst. The catalyst exhibited high activity and selectivity, providing a rational design strategy for efficient alkane dehydrogenation reactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Nanoscience & Nanotechnology
Chenyang Xu, Cong Ge, Dandan Sun, Yining Fan, Xue-Bin Wang
Summary: This article reviews the oxidative dehydrogenation (ODH) of light alkanes to olefins, with a focus on the use of boron nitride (BN) nanomaterials as advanced catalysts. The synthesis methods and the relationship between the active sites and catalytic ability of BN catalysts are discussed. The potential design of BN-based catalysts and exploration of BN-related catalytic mechanisms are also proposed.
Article
Chemistry, Physical
Pedro Castro-Fernandez, Deni Mance, Chong Liu, Paula M. Abdala, Elena Willinger, Aurelio A. Rossinelli, Alexander I. Serykh, Evgeny A. Pidko, Christophe Coperet, Alexey Fedorov, Christoph R. Mueller
Summary: This study investigates the effect of H2 treatment on the structure, acidity, and catalytic activity of γ/β-Ga2O3 nanoparticle catalysts. The results show that the presence of the β-Ga2O3 phase increases the PDH activity of the catalysts, and H2 treatment enhances the catalytic activity for all three catalysts through different mechanisms.
JOURNAL OF CATALYSIS
(2022)
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.
Review
Chemistry, Physical
Duo Wei, Xinzhe Shi, Ruiyang Qu, Kathrin Junge, Henrik Junge, Matthias Beller
Summary: Chemical hydrogen storage and release processes are crucial for new energy vectors, involving catalysts for efficient and stable operation. This review focuses on the current state of using heterogeneous materials as catalysts for chemical hydrogen storage and release systems. The advantages and disadvantages of these systems compared to homogeneous catalysts are discussed.
ACS ENERGY LETTERS
(2022)
Review
Chemistry, Physical
Duo Wei, Xinzhe Shi, Ruiyang Qu, Kathrin Junge, Henrik Junge, Matthias Beller
Summary: Chemical hydrogen storage and release processes are crucial for the implementation of new energy vectors. The use of heterogeneous catalytic systems for this purpose is practical and can be easily applied on an industrial scale.
ACS ENERGY LETTERS
(2022)
Article
Engineering, Environmental
Yuming Li, Qiyang Zhang, Shuting Fu, Vita A. Kondratenko, Tatiana Otroshchenko, Stephan Bartling, Yaoyuan Zhang, Anna Zanina, Yajun Wang, Guoqing Cui, Mingxia Zhou, Zhen Zhao, Chunming Xu, Guiyuan Jiang, Evgenii V. Kondratenko
Summary: In this study, it was found that CoOx species on the catalyst support transform into Co-0 species, which is crucial for the selective dehydrogenation of propane to propylene. The transformation of CoOx is influenced by metal-oxide-support interactions and the presence of defective OH groups in ZSM-5-type zeolites. The presence of CoOx is also shown to inhibit coke formation and the developed Co/S-1 catalyst exhibited high activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Qi Xie, Changxi Miao, Weiming Hua, Yinghong Yue, Zi Gao
Summary: A series of Ga-doped MgAl2O4 spinels were prepared and found to exhibit enhanced ethane dehydrogenation activity due to the introduction of Ga, with surface acid sites playing a key role. Additionally, the introduction of CO2 showed a significant promoting effect on the catalysts' activity and improved their stability.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
