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学者姓名：刘雨溪
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Abstract ：
The paint production sector emits both aromatic compounds and oxygenated volatile organic compounds (OVOCs). Supported palladium catalysts have demonstrated effective oxidation performance for each type of VOCs separately; however, the challenge persists in managing the competitive adsorption of different VOCs types on Pd-based catalysts. In this study, we developed a nitrogen-doped carbon (NC)-modified TiO2-supported catalyst featuring a highly dispersed, cluster-type Pd structure created through in situ pyrolysis method, which offers more catalytic active sites than conventional nanoparticle catalysts. The catalyst's key characteristics, including high noble-metal usage and an ideal Pd0/Pd2+ ratio, enhance its catalytic performance for multicomponent VOCs oxidation, reaching T90% values of 167 and 191 degrees C (at a space velocity of 40,000 mL/(g h)). Furthermore, the NC structure created through in situ pyrolysis technique aids in diminishing the inhibitive adsorption effect of ethyl acetate on o-xylene and improves the catalyst's resistance to water. This research presents a promising approach for the rational design of highly dispersed Pd catalysts that have enhanced water resistance and offers new understanding in managing competitive adsorption for the efficient removal of multicomponent aromatic VOCs and OVOCs in complicated settings.
Keyword ：
Metal cluster Metal cluster Pd-based catalysts Pd-based catalysts VOCs oxidation VOCs oxidation Nitrogen-doped carbon Nitrogen-doped carbon Multicomponent VOCs Multicomponent VOCs
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| GB/T 7714 | Zhang, Zexu , Tao, Jinxiong , Hao, Zhixing et al. High-Performance Pd Cluster Catalyst Modified with N-Doped Carbon for Multicomponent VOCs Oxidation [J]. | CHEMCATCHEM , 2025 , 17 (6) . |
| MLA | Zhang, Zexu et al. "High-Performance Pd Cluster Catalyst Modified with N-Doped Carbon for Multicomponent VOCs Oxidation" . | CHEMCATCHEM 17 . 6 (2025) . |
| APA | Zhang, Zexu , Tao, Jinxiong , Hao, Zhixing , Zhou, Xin , Hou, Zhiquan , Deng, Jiguang et al. High-Performance Pd Cluster Catalyst Modified with N-Doped Carbon for Multicomponent VOCs Oxidation . | CHEMCATCHEM , 2025 , 17 (6) . |
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Abstract ：
The technology for the selective catalytic reduction of NOx by CO (CO-SCR) has the capability to simultaneously eliminate CO and NOx from industrial flue gas and automobile exhaust, thus making it a promising denitrification method. The advancement of cost-effective and high-performing catalysts is crucial for the commercialization of this technology. Mn-based catalysts demonstrate enhanced catalytic efficiency under conditions of low temperature and low oxygen content when compared to other transition metal-based catalysts, indicating significant potential for practical applications. This review outlines the diverse Mn-based catalysts, including bulk or supported MnOx catalysts, bulk or supported Mn-based composite oxide catalysts, and the use of MnOx as dopants. Subsequently, the synthesis methods and catalytic mechanism employed by Mn-based catalysts are presented. The following section examines the impact of O-2, H2O, and SO2 on the catalytic performance. Finally, the potential and implications of this reaction are deliberated. This work aims to offer theoretical guidance for the rational design of highly efficient Mn-based catalysts in the CO-SCR reaction for industrial applications.
Keyword ：
reaction mechanism reaction mechanism H2O H2O CO-SCR CO-SCR SO2 SO2 O-2 O-2 Mn-based catalysts Mn-based catalysts
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| GB/T 7714 | Lian, Dianxing , Chen, Mohaoyang , Wang, Huanli et al. Mn-Based Catalysts in the Selective Reduction of NOx with CO: Current Status, Existing Challenges, and Future Perspectives [J]. | CATALYSTS , 2024 , 14 (7) . |
| MLA | Lian, Dianxing et al. "Mn-Based Catalysts in the Selective Reduction of NOx with CO: Current Status, Existing Challenges, and Future Perspectives" . | CATALYSTS 14 . 7 (2024) . |
| APA | Lian, Dianxing , Chen, Mohaoyang , Wang, Huanli , Li, Chenxi , Liu, Botao , Dai, Guiyao et al. Mn-Based Catalysts in the Selective Reduction of NOx with CO: Current Status, Existing Challenges, and Future Perspectives . | CATALYSTS , 2024 , 14 (7) . |
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Abstract ：
The selective catalytic reduction of NO by CO (CO-SCR) is regarded as a highly promising technology for the purification of industrial exhaust gas due to its ability to simultaneously eliminate two toxic and harmful gases. This review provides an overview of recent advances in the CO-SCR reaction, firstly exploring the multiple reaction pathways for the reduction of NO to N2 by CO, and then analyzing in depth the multidimensional influence mechanisms of O2, SO2 and H2O on this reaction. In addition, the structural control strategies to improve the resistance of noble- and non-precious metal-based single-atom and cluster catalysts to O2, SO2 and H2O were discussed from the perspectives of particle size regulation, electronic structure control, and surface/interfacial structure modulation. Finally, the paper summarizes the current challenges of CO-SCR technology and provides detailed suggestions for future research directions, with the objective of enriching the design concepts for high- efficiency denitrification catalysts.
Keyword ：
Regulation of surface/interfacial structure Regulation of surface/interfacial structure O2/SO2/H2O resistance O2/SO2/H2O resistance CO-SCR CO-SCR Electronic structure modulation Electronic structure modulation Adjustment of particle size Adjustment of particle size
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| GB/T 7714 | Wang, Huanli , Lian, Dianxing , Chen, Mohaoyang et al. Enhancing the resistance of single-atom and cluster catalysts in CO-SCR to water, sulfur, and oxygen via structural engineering [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 500 . |
| MLA | Wang, Huanli et al. "Enhancing the resistance of single-atom and cluster catalysts in CO-SCR to water, sulfur, and oxygen via structural engineering" . | CHEMICAL ENGINEERING JOURNAL 500 (2024) . |
| APA | Wang, Huanli , Lian, Dianxing , Chen, Mohaoyang , Li, Chenxi , Dai, Guiyao , Hou, Shujun et al. Enhancing the resistance of single-atom and cluster catalysts in CO-SCR to water, sulfur, and oxygen via structural engineering . | CHEMICAL ENGINEERING JOURNAL , 2024 , 500 . |
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Abstract ：
Pt-based catalysts can be poisoned by the chlorine formed during the oxidation of multicomponent volatile organic compounds (VOCs) containing chlorinated VOCs. Improving the low-temperature chlorine resistance of catalysts is important for industrial applications, although it is yet challenging. We hereby demonstrate the essential catalytic roles of a bifunctional catalyst with an atomic-scale metal/oxide interface constructed by an intermetallic compound nanocrystal. Introducing trichloroethylene (TCE) exhibits a less negative effect on the catalytic activity of the bimetallic catalyst for o-xylene oxidation, and the partial deactivation caused by TCE addition is reversible, suggesting that the bimetallic, HCl-etched Pt3Sn(E)/CeO2 catalyst possesses much stronger chlorine resistance than the conventional Pt/CeO2 catalyst. On the site-isolated Pt/Sn catalyst, the presence of aromatic hydrocarbon significantly inhibits the adsorption strength of TCE, resulting in excellent catalytic stability in the oxidation of the VOC mixture. Furthermore, the large amount of surface adsorbed oxygen species generated on the electronegative Pt is highly effective for low-temperature C/Cl bond dissociation. The adjacent promoter (Sn/O) possesses the functionality of acid sites to provide sufficient protons for HCl formation over the bifunctional catalyst, which is considered critical to maintaining the reactivity of Pt by removing Cl and decreasing the polychlorinated byproducts.
Keyword ：
chlorine-resistance ability chlorine-resistance ability Pt-based bimetallic catalysts Pt-based bimetallic catalysts volatile organic compound volatile organic compound o-xylene abatement o-xylene abatement intermetallic compound intermetallic compound
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| GB/T 7714 | Gao, Ruyi , Zhang, Manchen , Liu, Yuxi et al. Engineering Platinum Catalysts via a Site-Isolation Strategy with Enhanced Chlorine Resistance for the Elimination of Multicomponent VOCs [J]. | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2022 . |
| MLA | Gao, Ruyi et al. "Engineering Platinum Catalysts via a Site-Isolation Strategy with Enhanced Chlorine Resistance for the Elimination of Multicomponent VOCs" . | ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022) . |
| APA | Gao, Ruyi , Zhang, Manchen , Liu, Yuxi , Xie, Shaohua , Deng, Jiguang , Ke, Xiaoxing et al. Engineering Platinum Catalysts via a Site-Isolation Strategy with Enhanced Chlorine Resistance for the Elimination of Multicomponent VOCs . | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2022 . |
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Abstract ：
The nature of porous support (mesoporous Al2O3 and MgO (denoted as meso-Al2O3 and meso-MgO, respectively) and microporous HZSM-5) on catalytic performance of the bimetallic RuCo nanoparticles (NPs) was investigated for the oxidation of 1,2-dichloroethane (1,2-DCE). Redox and acid properties and reaction intermediates of the samples were measured by means of various techniques. The RuO2 species were dominantly present in the supported bimetallic samples, and Co doping could increase the length of the Ru-O bond. Compared with RuCo/ meso-MgO and RuCo/meso-Al2O3, RuCo/HZSM-5 exhibited the highest catalytic activity (T-90% =281 degrees C, TOFNoble metal = 3.6 x 10(-3) s(-1), reaction rate at 270 ;degrees C = 18.7 mu mol/(g(Noble metal) s), and apparent activation energy =36 kJ/mol at SV = 20,000 mL/(g h)) and the best Cl-resistant performance, which was associated with its strong redox ability, suitable acidity, good 1,2-DCE adsorption capacity, highly dispersed RuCo NPs, and strong interaction between RuCo NPs and HZSM-5. Loading of RuCo NPs on the support could suppress the formation of C2H3Cl and improve the Cl-resistant performance. Over the RuCo/HZSM-5 sample, the partial deactivation induced by water vapor or HCl addition was reversible, while that induced by SO2 introduction was irreversible. Based on the characterization results, we believe that the oxidation of 1,2-DCE over RuCo/meso-Al2O3, RuCo/ meso-MgO or RuCo/HZSM-5 might take place concurrently via the Langmuir-Hinshelwood and Mars-van Krevelen mechanisms. This work can provide a strategy to develop the efficient catalysts with low Cl-containing by-products formation, high CO2 selectivity, and good Cl-resistance in the oxidative removal of Cl-VOCs under the practical conditions.
Keyword ：
Supported noble metal catalyst Supported noble metal catalyst 1, 2-Dichloroethane oxidation br 1, 2-Dichloroethane oxidation br Chlorine-resistance Chlorine-resistance Bimetallic ruthenium-cobalt nanoparticle Bimetallic ruthenium-cobalt nanoparticle Support effect Support effect
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| GB/T 7714 | Zhang, Xing , Dai, Lingyun , Liu, Yuxi et al. Effect of support nature on catalytic activity of the bimetallic RuCo nanoparticles for the oxidative removal of 1,2-dichloroethane [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 285 . |
| MLA | Zhang, Xing et al. "Effect of support nature on catalytic activity of the bimetallic RuCo nanoparticles for the oxidative removal of 1,2-dichloroethane" . | APPLIED CATALYSIS B-ENVIRONMENTAL 285 (2021) . |
| APA | Zhang, Xing , Dai, Lingyun , Liu, Yuxi , Deng, Jiguang , Jing, Lin , Wang, Zhiwei et al. Effect of support nature on catalytic activity of the bimetallic RuCo nanoparticles for the oxidative removal of 1,2-dichloroethane . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 285 . |
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Abstract ：
Catalytic oxidation is one of the effective pathways for completely eliminating volatile organic compounds (VOCs) emitted from industrial and transportation activities. Meanwhile, single-atom catalysts have excellent application prospects in numerous reactions due to their high metal atomic utilization efficiency. In this work, we adopted a novel strategy to prepare an active Pd/Co single-atom catalyst (i.e., Pd1Co1/Al2O3) for benzene oxidation. The successful formation of the atomically dispersed palladium and cobalt species on Al2O3 was verified by the aberration-corrected high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure. By the in situ temperature-programmed techniques and in situ diffuse reflectance Fourier transform infrared spectroscopy, we observed a double effect of the palladium and cobalt oxide active sites, resulting in an enhanced performance for benzene oxidation. A benzene conversion of 90 % was achieved over the Pd1Co1/Al2O3 catalyst at 250 degrees C and a space velocity of 40,000 mL/(g h). Interestingly, the catalyst also possessed enhanced sulfur resistance performance. The good regeneration ability of the active sites in the catalyst was due to the single-atom dispersion of Pd and Co. In addition, we deduce that benzene oxidation might occur over Pd1Co1/Al2O3 via a pathway of benzene -> cyclohexadiene -> phenol -> quinone -> maleate -> acetate -> CO2 and H2O. We believe that the obtained results can provide a useful idea for rationally designing the double active site single-atom catalysts and understanding the mechanism of VOCs oxidation.
Keyword ：
Sulfur resistance Sulfur resistance Benzene oxidation Benzene oxidation Reaction mechanism Reaction mechanism Volatile organic compound Volatile organic compound Bimetallic single-atom catalyst Bimetallic single-atom catalyst
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| GB/T 7714 | Hou, Zhiquan , Dai, Lingyun , Liu, Yuxi et al. Highly efficient and enhanced sulfur resistance supported bimetallic single-atom palladium-cobalt catalysts for benzene oxidation [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 285 . |
| MLA | Hou, Zhiquan et al. "Highly efficient and enhanced sulfur resistance supported bimetallic single-atom palladium-cobalt catalysts for benzene oxidation" . | APPLIED CATALYSIS B-ENVIRONMENTAL 285 (2021) . |
| APA | Hou, Zhiquan , Dai, Lingyun , Liu, Yuxi , Deng, Jiguang , Jing, Lin , Pei, Wenbo et al. Highly efficient and enhanced sulfur resistance supported bimetallic single-atom palladium-cobalt catalysts for benzene oxidation . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 285 . |
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Abstract ：
Since the Pt-based catalysts often suffer severe deactivation by chlorine, development of a catalyst with good activity and chlorine-resistant ability is of importance in effectively controlling emissions of (chlorinated) volatile organic compounds ((C)VOCs). In this work, we prepared the Al2O3-supported bimetallic catalysts with narrow metal particle size distributions and their application in benzene oxidation. It is found that PtW/Al2O3 showed the highest catalytic activity and the lowest activation energy. The characterization results were well correlated with the catalytic activities, and a Pt-MOx (M = W, Mo) bimetallic synergistic effect was proposed. In situ FTIR studies reveal that the transformation from phenol to benzoquinone was the key step in benzene oxidation process. The influence of 1,2-dichloroethane (DCE) on catalytic activity for benzene oxidation of the as-obtained samples was also examined. It is demonstrated that there was a competitive adsorption between benzene and DCE molecules, and the DCE exerted an inhibitive effect on benzene oxidation. We conclude that excellent catalytic performance of the bimetallic sample was associated with its good abilities to adsorb and activate benzene on small ensembles of the MOx in proximity contact with Pt as well as the strong interaction between the highly dispersed metallic Pt species and the MOx clusters (which led to enhancement in antideactivation of the Pt species under the oxygen-rich and Cl-containing reaction conditions). We are sure that the present work can provide an idea for understanding the nature of bimetallic active sites and rationally designing the efficient bimetallic catalysts for the oxidative removal of VOCs.
Keyword ：
Chlorine-resistant ability Chlorine-resistant ability Platinum-tungsten nanoparticle Platinum-tungsten nanoparticle Bimetallic catalyst Bimetallic catalyst Benzene oxidation Benzene oxidation Volatile organic compound removal Volatile organic compound removal
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| GB/T 7714 | Zhang, Kaiyue , Dai, Lingyun , Liu, Yuxi et al. Insights into the active sites of chlorine-resistant Pt-based bimetallic catalysts for benzene oxidation [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2020 , 279 . |
| MLA | Zhang, Kaiyue et al. "Insights into the active sites of chlorine-resistant Pt-based bimetallic catalysts for benzene oxidation" . | APPLIED CATALYSIS B-ENVIRONMENTAL 279 (2020) . |
| APA | Zhang, Kaiyue , Dai, Lingyun , Liu, Yuxi , Deng, Jiguang , Jing, Lin , Zhang, Kunfeng et al. Insights into the active sites of chlorine-resistant Pt-based bimetallic catalysts for benzene oxidation . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2020 , 279 . |
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