Journal ArticleDOI
Advances in Catalytic Applications of Zeolite-Supported Metal Catalysts.
TLDR
A comprehensive review of the state-of-the-art achievements in catalytic applications of zeolite-supported metal catalysts is presented in this paper, mainly focusing on hydrogenation reactions.Abstract:
Zeolites possessing large specific surface areas, ordered micropores, and adjustable acidity/basicity have emerged as ideal supports to immobilize metal species with small sizes and high dispersities. In recent years, the zeolite-supported metal catalysts have been widely used in diverse catalytic processes, showing excellent activity, superior thermal/hydrothermal stability, and unique shape-selectivity. In this review, a comprehensive summary of the state-of-the-art achievements in catalytic applications of zeolite-supported metal catalysts are presented for important heterogeneous catalytic processes in the last five years, mainly including 1) the hydrogenation reactions (e.g., CO/CO2 hydrogenation, hydrogenation of unsaturated compounds, and hydrogenation of nitrogenous compounds); 2) dehydrogenation reactions (e.g., alkane dehydrogenation and dehydrogenation of chemical hydrogen storage materials); 3) oxidation reactions (e.g., CO oxidation, methane oxidation, and alkene epoxidation); and 4) other reactions (e.g., hydroisomerization reaction and selective catalytic reduction of NOx with ammonia reaction). Finally, some current limitations and future perspectives on the challenge and opportunity for this subject are pointed out. It is believed that this review will inspire more innovative research on the synthesis and catalysis of zeolite-supported metal catalysts and promote their future developments to meet the emerging demands for practical applications.read more
Citations
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Journal ArticleDOI
Metal Sites in Zeolites: Synthesis, Characterization, and Catalysis.
Qiang Zhang,Shiqin Gao,Jihong Yu +2 more
TL;DR: The metal-in-zeolite composites as mentioned in this paper have experienced rapid development in heterogeneous catalysis, owing to the combination of the merits of both active metal sites and zeolite intrinsic properties.
Journal ArticleDOI
Single Atom Catalysts for Selective Methane Oxidation to Oxygenates.
TL;DR: In this article , a review of single atom catalysts (SACs) for the selective oxidation of CH4 to C1-2 liquid oxygenates is presented, where the chemical nature of catalytic sites, effects of metal-support interaction, and stabilization of intermediate species on catalysts to minimize overoxidation are thoroughly discussed with a forward-looking perspective.
Journal ArticleDOI
Enhanced Catalytic Performance through In Situ Encapsulation of Ultrafine Ru Clusters within a High-Aluminum Zeolite
Jiang-Ling Yang,Ying Juan He,Jiang He,Yuanshuai Liu,Huawei Geng,Shaohua Chen,Lu Lin,M. Liu,Tiehong Chen,Qike Jiang,Bert M. Weckhuysen,Wenhao Luo,Zhijie Wu +12 more
TL;DR: In this paper , Ru@H-ZSM-5 showed an enhanced activity and stability for the crucial hydrodeoxygenation (HDO) of phenol to cyclohexane in biomass valorization.
Journal ArticleDOI
Synergistic catalysis of Ru single-atoms and zeolite boosts high-efficiency hydrogen storage
TL;DR: In this paper , a Ru single atom supported on *BEA zeolite catalyst (Ru(Na)/Beta), with the assistance of hydrogen spillover, was used to accelerate the hydrogenation of N-ethyl carbazole (NEC), N-propylcarbazole(NPC), and 2-methylindole (2-MID).
Journal ArticleDOI
Unveiling Secondary-Ion-Promoted Catalytic Properties of Cu-SSZ-13 Zeolites for Selective Catalytic Reduction of NO<i><sub>x</sub></i>
TL;DR: In this paper , a series of Cu-Sm-SSZ-13 zeolites have been prepared by ion-exchanging Sm ions followed by Cu ions, which exhibit superior NH3-SCR performance.
References
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Journal ArticleDOI
Methane selective oxidation to methanol by metal-exchanged zeolites: a review of active sites and their reactivity
TL;DR: In this paper, the main challenges in the development of Fe-, Cu-, Co-and Ni-exchanged zeolites for methane hydroxylation and summarize key findings that have been reported in both spectroscopy and computational studies.
Journal ArticleDOI
Effect of zeolite topology and reactor configuration on the direct conversion of CO2 to light olefins and aromatics
Adrian Ramirez,Abhishek Dutta Chowdhury,Abhay Dokania,Pieter Cnudde,Mustafa Caglayan,Irina Yarulina,Edy Abou-Hamad,Lieven Gevers,Samy Ould-Chikh,Kristof De Wispelaere,Veronique Van Speybroeck,Jorge Gascon +11 more
TL;DR: The direct transformation of CO2 into high-value-added hydrocarbons (i.e., olefins and aromatics) has the potential to make a decisive impact in our society.
Journal ArticleDOI
Hybrid Cu–ZnO–ZrO2/H-ZSM5 system for the direct synthesis of DME by CO2 hydrogenation
Giuseppe Bonura,M. Cordaro,Lorenzo Spadaro,Catia Cannilla,Francesco Arena,Francesco Frusteri +5 more
TL;DR: In this article, a one-step CO2 hydrogenation reaction to dimethyl ether (DME) was studied on a hybrid system characterized by different reactor bed configurations (physical mixing, dual-bed and mono-bed).
Journal ArticleDOI
Misconceptions and challenges in methane-to-methanol over transition-metal-exchanged zeolites
Manoj Ravi,Vitaly L. Sushkevich,Amy J. Knorpp,Mark A. Newton,Dennis Palagin,Ana B. Pinar,Marco Ranocchiari,Jeroen A. van Bokhoven,Jeroen A. van Bokhoven +8 more
TL;DR: Some oft-cited assumptions in this topic are scrutinized—which include the labelling of the process as biomimetic, the debate regarding the industrial viability of direct methane-oxidation systems and the claim that methane is difficult to activate—and the extent to which these are scientifically robust is delineated.
Journal ArticleDOI
Tandem Catalysis for Hydrogenation of CO and CO2 to Lower Olefins with Bifunctional Catalysts Composed ofSpinel Oxide and SAPO-34
Xiaoliang Liu,Mengheng Wang,Haoren Yin,Hu Jingting,Kang Cheng,Jincan Kang,Qinghong Zhang,Ye Wang +7 more
TL;DR: Transformation of syngas (H2/CO) and hydrogenation of CO2 into lower olefins are attractive routes for chemical utilization of various carbon resources and CO2, but both suffer from limited product as mentioned in this paper.