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
Applications of Zeolites to C1 Chemistry: Recent Advances, Challenges, and Opportunities
TL;DR: The key zeolite descriptors that influence catalytic performance, such as framework topologies, nanoconfinement effects, Brønsted acidities, secondary-pore systems, particle sizes, extraframework cations and atoms, hydrophobicity and hydrophilicity, and proximity between acid and metallic sites are discussed to provide a deep understanding of the significance of zeolites to C1 chemistry.
Journal ArticleDOI
Role of zirconium in direct CO2 hydrogenation to lower olefins on oxide/zeolite bifunctional catalysts
Shanshan Dang,Peng Gao,Ziyu Liu,Xinqing Chen,Chengguang Yang,Hui Wang,Liangshu Zhong,Liangshu Zhong,Shenggang Li,Shenggang Li,Yuhan Sun,Yuhan Sun +11 more
TL;DR: In this paper, a series of bifunctional catalysts contained indium-zirconium composite oxides with different In:Zr atomic ratios and SAPO-34 zeolite, which can achieve a selectivity for C2 −C4= as high as 65-80% and that for C 2 −C 4 of 96% with only about 2.5% methane among the hydrocarbon products at CO2 conversion of 15-27%.
Journal ArticleDOI
Zeolite-Encapsulated Pt Nanoparticles for Tandem Catalysis
TL;DR: This is the first demonstration that the product distribution in a tandem reaction is manipulated by tailoring the architecture of catalytic materials via encapsulation.
Journal ArticleDOI
Catalytic reduction of CO2 into fuels and fine chemicals
TL;DR: In this article, the authors summarized several homogeneous catalytic processes involving the nucleophilic addition of CO2, resulting in C-C and C-H bond formation leading to the synthesis of 2-oxazolidinones, aminals, terminal carboxylated products and indolelactone derivatives that are potentially sound for the pharmaceutical industry.
Journal ArticleDOI
Fully Copper‐Exchanged High‐Silica LTA Zeolites as Unrivaled Hydrothermally Stable NH3‐SCR Catalysts
Taekyung Ryu,Nak Ho Ahn,Seungwan Seo,Jung Cho,Hyojun Kim,Donghui Jo,Gi Tae Park,Pyung Soon Kim,Chang H. Kim,Elliott L. Bruce,Paul A. Wright,In-Sik Nam,Suk Bong Hong +12 more
TL;DR: Divalent copper ions when fully exchanged into high-silica LTA zeolites are demonstrated to exhibit excellent activity maintenance for NOx reduction with NH3 under vehicle simulated conditions even after hydrothermal aging at 900 °C, a critical temperature that the current commercial Cu-SSZ-13 catalyst cannot overcome owing to thermal deactivation.