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学者姓名：李铁森
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Abstract ：
A highly efficient copper-catalyzed oxidative dehydrogenation of primary amines to access nitriles has been developed. We found that DMAP was an efficient ligand for copper-catalyzed oxidation and molecular oxygen was a green oxidizing agent. This reaction exhibited excellent functional group compatibility and a broad substrate scope. Various benzylic, allylic, and aliphatic amines were selectively and effectively oxidized to the corresponding nitriles in high yields (up to 100%). The ligand DMAP not only accelerated the reaction rate but also enhanced the stability of the catalyst. The practicality of the reaction was illustrated on a gram scale, even at a lower catalyst loading and/or under bubble air conditions.
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| GB/T 7714 | Li, Shiyun , An, Yan , Wang, Lulu et al. Ligand-Accelerated, Copper-Catalyzed Aerobic Oxidative Dehydrogenation of Primary Amines to Nitriles [J]. | ACS OMEGA , 2025 , 10 (11) : 11454-11462 . |
| MLA | Li, Shiyun et al. "Ligand-Accelerated, Copper-Catalyzed Aerobic Oxidative Dehydrogenation of Primary Amines to Nitriles" . | ACS OMEGA 10 . 11 (2025) : 11454-11462 . |
| APA | Li, Shiyun , An, Yan , Wang, Lulu , Chen, Yu , Huang, Jun , Li, Tiesen et al. Ligand-Accelerated, Copper-Catalyzed Aerobic Oxidative Dehydrogenation of Primary Amines to Nitriles . | ACS OMEGA , 2025 , 10 (11) , 11454-11462 . |
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Supported noble metal cluster catalysts are typically operated under severe conditions involving switching between reducing and oxidizing atmospheres, causing irreversible transformation of the catalyst structure and thereby leading to permanent deactivation. We discovered that various platinum (Pt) precursors spontaneously disperse in a germanium-MFI (Ge-MFI) zeolite, which opposes the Ostwald ripening phenomenon, producing self-regenerating Pt/Ge-MFI catalysts for propane dehydrogenation. These catalysts reversibly switch between Pt clusters and Pt single atoms in response to reducing reaction and oxidizing regeneration conditions. This environmental adaptability allows them to completely self-regenerate over 110 reaction and regeneration cycles in propane dehydrogenation, and they exhibited unprecedented sintering resistance when exposed to air at 800 degrees C for 10 days. Such spontaneous metal dispersion in a Ge-MFI zeolite is a robust and versatile methodology for fabricating various rhodium, ruthenium, iridium, and palladium cluster catalysts.
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| GB/T 7714 | Hong, Huizhen , Xu, Zhikang , Mei, Bingbao et al. A self-regenerating Pt/Ge-MFI zeolite for propane dehydrogenation with high endurance [J]. | SCIENCE , 2025 , 388 (6746) : 497-502 . |
| MLA | Hong, Huizhen et al. "A self-regenerating Pt/Ge-MFI zeolite for propane dehydrogenation with high endurance" . | SCIENCE 388 . 6746 (2025) : 497-502 . |
| APA | Hong, Huizhen , Xu, Zhikang , Mei, Bingbao , Hu, Wende , Fornasiero, Paolo , Wang, Chuanming et al. A self-regenerating Pt/Ge-MFI zeolite for propane dehydrogenation with high endurance . | SCIENCE , 2025 , 388 (6746) , 497-502 . |
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In order to gain insight into the influence of SiO2 support particle size on the vacuum residue (VR) slurry-phase hydrocracking performance of Fe-based catalysts, a series of FeZn/SiO2 catalysts with varying SiO2 particle sizes were prepared. Characterization results show that the surface area and pore volume of the FeZn/SiO2 catalysts increase with the reduction of SiO2 particle sizes. The metals Fe and Zn species on FeZn/SiO2-S catalyst are more readily reducible via H2-TPR analysis. Notably, FeZn/SiO2-S catalyst presents higher metal dispersion and a greater degree of sulfurization compared to the other catalysts by XRD and XPS. Hydrocracking results demonstrate that the FeZn/SiO2-S catalyst achieves the lowest coke and gas yields (11.9 wt% and 0.4 wt%), respectively, and the highest VR conversion among these catalysts. The superior performance of the FeZn/SiO2-S catalyst in VR slurry-phase hydrocracking is ascribed to its enhanced hydrogenation activity, deriving from the higher dispersion and sulfurization of metals species. This suppresses the aggregation of polycyclic aromatic hydrocarbons in VR and the over-cracking of intermediate products. Additionally, the increased mesopore associated with smaller SiO2 particles facilitates to the diffusion of large VR molecules, further promoting the hydrocracking reaction.
Keyword ：
FeZn catalyst FeZn catalyst Hydrogenation activity Hydrogenation activity SiO2 particle size SiO2 particle size Slurry-phase hydrocracking Slurry-phase hydrocracking Vacuum residue Vacuum residue
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| GB/T 7714 | Wang, Jianbo , Yan, Jianteng , Cui, Qingyan et al. Effect of SiO2 support particle sizes on the performance of FeZn catalysts in VR slurry-phase hydrocracking [J]. | CATALYSIS TODAY , 2025 , 449 . |
| MLA | Wang, Jianbo et al. "Effect of SiO2 support particle sizes on the performance of FeZn catalysts in VR slurry-phase hydrocracking" . | CATALYSIS TODAY 449 (2025) . |
| APA | Wang, Jianbo , Yan, Jianteng , Cui, Qingyan , Li, Tiesen , Shi, Jie , Wang, Tinghai et al. Effect of SiO2 support particle sizes on the performance of FeZn catalysts in VR slurry-phase hydrocracking . | CATALYSIS TODAY , 2025 , 449 . |
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Hierarchical SAPO-11, featuring both micropore and mesopore channels, demonstrates an outstanding performance in high-octane gasoline production. In this work, we propose an economic and effective approach to directly fabricate hierarchical SAPO-11 molecular sieve from natural kaolin, eliminating the need for mesoporogens. The systematic characterization results show that the kaolin-derived SAPO-11 possesses abundant micro-mesoporous structure and more Br & oslash;nsted (B) acid sites on the external surface in contrast with the conventional SAPO-11 prepared employing silica sol as silicon source as well as SAPO-11 synthesized with the assist with of poly(ethylene oxide)-block-poly(propylene oxide)-blockpoly(ethylene oxide) (F127). The analysis of the formation process reveals that the kaolin not only provides silicon source for the SAPO-11 crystal growth, but also offers confined environment for crystal growth along the preferential orientation, resulting in the generation of the microporous and mesoporous structure. Benefiting from these unique properties, the kaolin-derived Pt/SAPO-11 exhibits considerably improved selectivity for di-branched C8 isomers in n-octane hydroisomerization. (c) 2024 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/).
Keyword ：
Hierarchical pore Hierarchical pore High-octane gasoline High-octane gasoline Hydroisomerization Hydroisomerization Kaolin Kaolin SAPO-11 SAPO-11
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| GB/T 7714 | Wang, Chan , Chi, Zhao-Quan , Liu, Shu et al. Mesoporogen-free synthesis of hierarchical SAPO-11 from kaolin for hydroisomerization of n-alkanes [J]. | PETROLEUM SCIENCE , 2025 , 22 (3) : 1370-1379 . |
| MLA | Wang, Chan et al. "Mesoporogen-free synthesis of hierarchical SAPO-11 from kaolin for hydroisomerization of n-alkanes" . | PETROLEUM SCIENCE 22 . 3 (2025) : 1370-1379 . |
| APA | Wang, Chan , Chi, Zhao-Quan , Liu, Shu , Tan, Si-Jia , Xu, Jing-Dong , Li, Tie-Sen et al. Mesoporogen-free synthesis of hierarchical SAPO-11 from kaolin for hydroisomerization of n-alkanes . | PETROLEUM SCIENCE , 2025 , 22 (3) , 1370-1379 . |
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A low-cost and process-intensified synthesis approach of SSZ-35 zeolite via a seed-assisted method is presented. This approach involves the development of a relatively inexpensive template and the application of seeds to minimize crystallization time and template consumption. Herein, N-Ethyl, N-methyl 2,6-cis-dimethylpiperidinium hydroxide (EMDMPOH) is selected as a template to synthesize SSZ-35 zeolite, and a simplified and optimized scheme for the preparation of such a template is proposed. Specially, the high-purity EMDMPOH is prepared by a sequential alkylation of 2,6-dimethylpiperidine with iodoethane and iodomethane, followed by ion exchange. By employing a seed-assisted strategy, the synthesis process of SSZ-35 zeolite is intensified, resulting in a significant reduction in crystallization time from 7 d to 75 h. Systematic characterizations reveal that the synthesized SSZ-35 zeolite has smaller crystals and larger specific surface area in comparison with the reference sample, leading to enhanced selectivity in n-octane hydroisomerization. Moreover, the cost accounting analysis shows a notable decrease in the synthesis cost of SSZ-35 zeolite by using the synthesis route that combines the simplified process for preparing the template and the reduced amount of template.
Keyword ：
Crystallization intensification Crystallization intensification Low-cost synthesis Low-cost synthesis Seed-assisted method Seed-assisted method SSZ-35 zeolite SSZ-35 zeolite
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| GB/T 7714 | Dong, Peng , Wu, Huanliu , Luo, Longhua et al. Low-cost and efficient synthesis of SSZ-35 zeolite through a seed-assisted approach [J]. | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION , 2025 , 208 . |
| MLA | Dong, Peng et al. "Low-cost and efficient synthesis of SSZ-35 zeolite through a seed-assisted approach" . | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION 208 (2025) . |
| APA | Dong, Peng , Wu, Huanliu , Luo, Longhua , Cui, Qingyan , Li, Tiesen , Shi, Jie et al. Low-cost and efficient synthesis of SSZ-35 zeolite through a seed-assisted approach . | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION , 2025 , 208 . |
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For traditional strategies to construct SO2 and H2O co-resistant systems in low-temperature NH3 selective catalytic reduction (NH3-SCR) catalysts, the primary challenge lies in mitigating the partial loss of redox activity at active sites. Herein, we present an approach to construct a protective system based on interface engineering principles, effectively safeguarding Cu active sites in ZnO/FeCu-SSZ-13 under SO2 and H2O exposure. The core innovation stems from the creation of a strong interface effect originated from Zn-O-Al bonds formed between ZnO and the framework Al on the FeCu-SSZ-13 surface. This interface effect can regulate the electronic structure of Zn[sbnd]O bonds on ZnO component, producing abundant basic sites around the Cu active sites, enabling the preferential adsorption of SO2 and its oxidation into ZnSO4, thereby virtually eliminating the redox ability loss of Cu active sites. As a result, ZnO/FeCu-SSZ-13 achieves exceptional low-temperature NH3-SCR performance, maintaining over 90 % NOx conversion even in the presence of SO2 and H2O. Our work opens a new avenue for developing low-temperature NH3-SCR catalysts with desired SO2 and H2O resistance, offering valuable insights for advancing catalytic performance in challenging reaction conditions. © 2025 Elsevier B.V.
Keyword ：
Aluminum compounds Aluminum compounds Catalyst activity Catalyst activity II-VI semiconductors II-VI semiconductors Iron compounds Iron compounds Redox reactions Redox reactions Reduction Reduction Sulfur compounds Sulfur compounds Temperature Temperature
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| GB/T 7714 | He, Shuyi , Lin, Zheguan , Shi, Jie et al. Interface-engineered ZnO/FeCu-SSZ-13 with robust SO2 and H2O resistance for low-temperature NH3-SCR [J]. | Chemical Engineering Journal , 2025 , 522 . |
| MLA | He, Shuyi et al. "Interface-engineered ZnO/FeCu-SSZ-13 with robust SO2 and H2O resistance for low-temperature NH3-SCR" . | Chemical Engineering Journal 522 (2025) . |
| APA | He, Shuyi , Lin, Zheguan , Shi, Jie , Zhou, Linyu , Cui, Qingyan , Li, Tiesen et al. Interface-engineered ZnO/FeCu-SSZ-13 with robust SO2 and H2O resistance for low-temperature NH3-SCR . | Chemical Engineering Journal , 2025 , 522 . |
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Adsorptive separation, which relies on the size, polarity, and affinity of guest molecules, is an efficient, eco-friendly, and cost-effective method. Zeolite-based adsorbents, known for their uniform pore size and regenerability, have exhibited exceptional performance in many challenging adsorption processes, such as the separation of n-paraffin/i-paraffin and xylene isomers. Ion exchange, as an essential piece in the fabrication of zeolite-based adsorbents, significantly affects overall performance. In this review, we survey the recent key developments and issues within ion exchange research of zeolite-based adsorbents, including the solution pH, solution concentration, ion-exchange cycles, ion-exchange temperature, ion-exchange time, calcination temperature, and discuss the mechanisms of their influence on zeolite adsorption. This review also elaborates on the negative effects of improper ion exchange on incomplete cation exchange, cation migration, collapse of the zeolite structure, and blockage of zeolite pores. Other parameters that lack research but have been proven to affect ion exchange are also mentioned. We hope to generate interest in the wider community and encourage others to make use of ion exchange in tackling challenges of adsorption separation science and engineering.
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| GB/T 7714 | Li, Chenxin , Li, Tiesen , Cui, Qingyan et al. Ion exchange: an essential piece in the fabrication of zeolite adsorbents [J]. | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2025 , 27 (30) . |
| MLA | Li, Chenxin et al. "Ion exchange: an essential piece in the fabrication of zeolite adsorbents" . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS 27 . 30 (2025) . |
| APA | Li, Chenxin , Li, Tiesen , Cui, Qingyan , Wang, Tinghai , Wang, Chan , Yang, Jiao et al. Ion exchange: an essential piece in the fabrication of zeolite adsorbents . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2025 , 27 (30) . |
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Natural rectorite modified by the hydrothermal method was employed to prepare a catalyst for the slurry-phase hydrocracking of vacuum residue (VR). The influence of hydrothermal treatment on the properties of rectorite and the performance of the corresponding catalyst was examined. Hydrothermal treatment of the rectorite led to the formation of Fe3O4, as evidenced by H-2-TPR analysis. XPS results indicate that the hydrothermal treatment of rectorite can intensify the sulfidation process of Mo species supported on it, possibly due to modifications in the surface properties of the rectorite. Comparative slurry-phase hydrocracking tests showed that the catalyst supported on hydrothermally treated rectorite exhibited significantly higher VR conversion, higher liquid product yield, and higher yields of gasoline and diesel fractions, but lower gas yield compared to the catalyst supported on untreated rectorite. This is ascribed to the high hydrogenation activity of the catalyst supported on hydrothermally treated rectorite, which effectively suppresses the over-cracking reactions of intermediate products that would otherwise produce gas, illustrating the process intensification achieved through hydrothermal treatment.
Keyword ：
Hydrocracking Hydrocracking Hydrothermal treatment Hydrothermal treatment Mo catalyst Mo catalyst Sulfidation Sulfidation Vacuum residue Vacuum residue
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| GB/T 7714 | Cui, Qingyan , Yan, Jianteng , Zhang, Haobin et al. Hydrothermal treatment of natural rectorite enhanced Mo sulfidation for slurry-phase hydrocracking of vacuum residue [J]. | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION , 2024 , 205 . |
| MLA | Cui, Qingyan et al. "Hydrothermal treatment of natural rectorite enhanced Mo sulfidation for slurry-phase hydrocracking of vacuum residue" . | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION 205 (2024) . |
| APA | Cui, Qingyan , Yan, Jianteng , Zhang, Haobin , Feng, Weiwei , Yue, Yuanyuan , Li, Tiesen et al. Hydrothermal treatment of natural rectorite enhanced Mo sulfidation for slurry-phase hydrocracking of vacuum residue . | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION , 2024 , 205 . |
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A seed-directed approach to synthesizing FeZSM-22 zeolite without organic structure directing agent(OSDA)was developed by using Fe-rich diatomite as all aluminum and iron sources.The FeZSM-22 zeolite with optimal crystallinity and purity can be obtained by systematically adjusting feed composi-tion and synthesis conditions.Characterizations show that FeZSM-22 zeolite synthesized with OSDA-free owns high crystallinity,obvious thin needle-shaped morphology and high Bronsted/Lewis acid ratio.Significantly,when used for n-octane hydroisomerization reaction,its derived catalyst exhibits the best catalytic performance reflected by the highest selectivity to C8 isomers compared to the two reference catalysts prepared based on a Fe-containing and a Fe-free ZSM-22 synthesized through an OSDA-directed route from natural diatomite and conventional chemicals,respectively.This work provides an alternative route to sustainably synthesizing heteroatomic zeolites with high performance.
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| GB/T 7714 | Tiesen Li , Ting Chen , Yinghui Ye et al. OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization [J]. | 中国化学工程学报（英文版） , 2024 , 66 (2) : 51-59 . |
| MLA | Tiesen Li et al. "OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization" . | 中国化学工程学报（英文版） 66 . 2 (2024) : 51-59 . |
| APA | Tiesen Li , Ting Chen , Yinghui Ye , Peng Dong , Tinghai Wang , Qingyan Cui et al. OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization . | 中国化学工程学报（英文版） , 2024 , 66 (2) , 51-59 . |
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FAU-type zeolites are an important class of porous aluminosilicate materials with a 3-dimiensional network of accessible micropores (0.74 nm), which primarily encompass X and Y zeolites. Typically, FAU zeolite with a framework SiO2/Al(2)O3 molar ratio between 2.0 and 3.0 is called X zeolite, and that is greater than 3.0 is classified as Y zeolite. Due to their distinctive structure and pore characteristics, FAU-type zeolites have emerged as one of the most widely used catalysts, catalyst carriers, and adsorbents in the chemical industry. However, the sole microporous channels of the conventional FAU-type zeolites not only make them difficult for the reactions involving bulky molecules to occur within pore channel, leading to insufficient contact between reactants with active sites of the zeolite, but also restrict the diffusion of product within the zeolite, thus affecting the activity and lifetime of the catalyst. Therefore, the key to improving the performance of FAU-type zeolites lies in alleviating the adverse effects of micropore diffusion on mass transfer. Introducing mesopores and/or macropores into microporous zeolites to construct hierarchical zeolites with a multi-modal pore structure is believed to be a promising approach. This modification not only can preserve the active sites from the microporous structure, but also significantly enhances the diffusion rate of guest molecules within the zeolites. Consequently, researchers have concentrated on the preparation and application of hierarchical zeolites. This article focuses on the current research status on the preparation of hierarchical X and Y zeolites based on "bottom-up" direct synthesis and "top-down" post-treatment methods. The direct synthesis method mainly comprises template and template-free methods. In terms of the template method, the pore structure of FAU zeolites can be tailored by altering the nature of the templating agent, synthesis conditions and so on. Differently, the template-free method enables the preparation of hierarchical FAU zeolites without the addition of any template. In particular, hierarchical X and Y zeolites have been successfully synthesized directly from natural aluminosilicate minerals without the use of organic templates, which not only reduces the synthesis cost of hierarchical zeolites from raw materials, but also contributes to environmental protection. This method provides a novel synthetic pathway for the preparation of hierarchical zeolites in a low-cost and green way. On the other hand, posttreatment method based on desilication and dealumination is the main method for the preparation of hierarchical Y zeolite, whereas few researchers have made use of post-treatment method to introduce meso/macroporous structures into X zeolite because of the poor chemical stability of X zeolite. In addition, the article introduces the application performance of hierarchical X and Y zeolites in adsorption, catalysis as well as other reaction processes. Despite the superior diffusion capabilities of hierarchical FAU-type zeolites, there are several problemsincluding high cost of organic templates and pollution emissions from the removal of template in the process of synthesizing hierarchical zeolites based on template method, limiting the industrial application of this method. As a result, designing cheap and recyclable templates is the key to realizing green and low-cost preparation of hierarchical FAU-type zeolite. Furthermore, post-treatment method cannot achieve the regulation of mesoporous size in hierarchical zeolites. Future research should deeply investigate the structureactivity relationship between the pore structure and reaction performance of hierarchical FAU-type zeolites, so as to further open pore channels, and enhance diffusion, thus promoting the development of hierarchical FAU-type zeolites in industrial applications.
Keyword ：
adsorption adsorption catalysis catalysis direct synthesis direct synthesis hierarchical FAU-type zeolites hierarchical FAU-type zeolites post treatment post treatment
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| GB/T 7714 | Dong, Peng , Zhu, Lin , Luo, Longhua et al. Research progress in the synthesis and application of hierarchical FAU-type zeolites [J]. | CHINESE SCIENCE BULLETIN-CHINESE , 2024 , 69 (19) : 2718-2728 . |
| MLA | Dong, Peng et al. "Research progress in the synthesis and application of hierarchical FAU-type zeolites" . | CHINESE SCIENCE BULLETIN-CHINESE 69 . 19 (2024) : 2718-2728 . |
| APA | Dong, Peng , Zhu, Lin , Luo, Longhua , Li, Tiesen , Wang, Tinghai , Wang, Chan et al. Research progress in the synthesis and application of hierarchical FAU-type zeolites . | CHINESE SCIENCE BULLETIN-CHINESE , 2024 , 69 (19) , 2718-2728 . |
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