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学者姓名:邱文革
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摘要 :
The expandable graphite (EG) modified TiO2 nanocomposites were prepared by the high shear method using the TiO2 nanoparticles (NPs) and EG as precursors, in which the amount of EG doped in TiO2 was 10 wt.%. Followed by the impregnation method, adjusting the pH of the solution to 10, and using the electrostatic adsorption to achieve spatial confinement, the Pt elements were mainly distributed on the exposed TiO2, thus generating the Pt/10EG-TiO2- 10 catalyst. The best CO oxidation activity with the excellent resistance to H2O and SO2 was obtained over the Pt/10EG-TiO2 -10 catalyst: CO conversion after 36 hr of the reaction was ca. 85% under the harsh condition of 10 vol.% H2O and 100 ppm SO2 at a high gaseous hourly space velocity (GHSV) of 400,000 hr -1 . Physicochemical properties of the catalysts were characterized by various techniques. The results showed that the electrostatic adsorption, which riveted the Pt elements mainly on the exposed TiO2 of the support surface, reduced the dispersion of Pt NPs on EG and achieved the effective dispersion of Pt NPs, hence significantly improving CO oxidation activity over the Pt/10EG-TiO2 -10 catalyst. The 10 wt.% EG doped in TiO2 caused the TiO2 support to form a more hydrophobic surface, which reduced the adsorption of H2O and SO2 on the catalyst, greatly inhibited deposition of the TiOSO4 and formation of the PtSO4 species as well as suppressed the oxidation of SO2, thus resulting in an improvement in the resistance to H2O and SO2 of the Pt/10EG-TiO2 -10 catalyst. (c) 2024 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
关键词 :
CO oxidation CO oxidation Resistance toH2 O andSO2 Resistance toH2 O andSO2 Electrostatic adsorption Electrostatic adsorption Titania supported platinum Titania supported platinum Expandable graphite Expandable graphite
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GB/T 7714 | Zhu, Hongtai , Qiu, Wenge , Wu, Rui et al. Spatial confinement: An effective strategy to improve H2O and SO2 resistance of the expandable graphite-modified TiO2-supported Pt nanocatalysts for CO oxidation [J]. | JOURNAL OF ENVIRONMENTAL SCIENCES , 2025 , 148 : 57-68 . |
MLA | Zhu, Hongtai et al. "Spatial confinement: An effective strategy to improve H2O and SO2 resistance of the expandable graphite-modified TiO2-supported Pt nanocatalysts for CO oxidation" . | JOURNAL OF ENVIRONMENTAL SCIENCES 148 (2025) : 57-68 . |
APA | Zhu, Hongtai , Qiu, Wenge , Wu, Rui , Li, Kai , He, Hong . Spatial confinement: An effective strategy to improve H2O and SO2 resistance of the expandable graphite-modified TiO2-supported Pt nanocatalysts for CO oxidation . | JOURNAL OF ENVIRONMENTAL SCIENCES , 2025 , 148 , 57-68 . |
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摘要 :
A series of modified carbon nitride with a controlled amount of carbon vacancies is prepared successfully by simple acid treatment, and the performances of the corresponding Pd/CN-X catalysts in phenol-selective hydrogenation are investigated. It is found that the Pd/CN-30 catalyst exhibits the highest activity, while Pd/CN-60 shows a very low activity. The characterization of powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectra, temperature-programmed desorption of phenol and cyclohexanone, phenol adsorption experiments, and isotope experiment show that the high catalytic activities and selectivity of Pd/CN-30 are related to its relatively high Pd dispersity, high phenol adsorption capacity, and proper hydrophilicity. However, the much lower activity of Pd/CN-60 can be attributed to the existence of competitive adsorption of phenol and water molecules on the catalyst surface and its low hydrogen activation ability due to the support over modification that results in the much stronger hydrophilicity and the near atomic Pd dispersion. In addition, the stability of Pd/CN-X is positively correlated with the carbon vacancy contents due to the strong interaction between the Pd species and the support.
关键词 :
benzene ring reduction benzene ring reduction modification of carbon nitride modification of carbon nitride carbon vacancy carbon vacancy phenol-selective hydrogenation phenol-selective hydrogenation Pd-based catalyst Pd-based catalyst
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GB/T 7714 | Ding, Xinlei , Gao, Ruyi , Chen, Yun et al. Carbon Vacancies in Graphitic Carbon Nitride-Driven High Catalytic Performance of Pd/CN for Phenol-Selective Hydrogenation to Cyclohexanone [J]. | ACS CATALYSIS , 2024 , 14 (5) : 3308-3319 . |
MLA | Ding, Xinlei et al. "Carbon Vacancies in Graphitic Carbon Nitride-Driven High Catalytic Performance of Pd/CN for Phenol-Selective Hydrogenation to Cyclohexanone" . | ACS CATALYSIS 14 . 5 (2024) : 3308-3319 . |
APA | Ding, Xinlei , Gao, Ruyi , Chen, Yun , Wang, Hanyang , Liu, Yadong , Zhou, Binghui et al. Carbon Vacancies in Graphitic Carbon Nitride-Driven High Catalytic Performance of Pd/CN for Phenol-Selective Hydrogenation to Cyclohexanone . | ACS CATALYSIS , 2024 , 14 (5) , 3308-3319 . |
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摘要 :
Pt-0.15Na/EG-TiO(2 )catalysts obtained by the impregnation method showed better CO oxidation activity as well as resistance to SO2 and H2O than the unmodified Pt/EG-TiO2 catalysts. The physicochemical properties of the catalysts were characterized by means of ICP-AES, TEM, AC-TEM, CO-TPR, ESR, O-2-TPD, in situ DRIFTS, XAFS, XRD, BET, SEM and XPS techniques. Meanwhile, the influence of Na doping on improving the CO oxidation activity as well as SO2 and H2O resistance of the Pt/EG-TiO2 catalysts was investigated in depth. The addition of Na promoted the dispersion of Pt nanoparticles (NPs) in the Pt/EG-TiO2 catalysts, which led to the uniform dispersion of Pt on the TiO2 support mainly in the form of nanoclusters and single atoms, thus improving the utilization of Pt. Moreover, it also increased the number of active hydroxyl species on the surface of the Pt/EG-TiO2 catalysts, which accelerated the formation of COO*, an intermediate product of the CO oxidation reaction process, thereby improving the CO oxidation activity of the Pt/EG-TiO2 catalysts. The addition of Na did not change the crystal phase structure and surface morphology of the Pt/EG-TiO2 catalysts; it caused the TiO2 support to have more active hydroxyl species, which reacted with SO2 to form sulfite species. At the same time, the presence of active hydroxyl species inhibited the oxidation of SO2 and reduced the production of sulfate species. Pt-Ox and Na in the Pt-0.15Na/EG-TiO2 catalysts directly interacted with each other and uniformly dispersed on the EG-TiO2 support in the form of Pt-O(OH)x-Na. SO2 was preferentially adsorbed on Na, and then SO2 combined with Na to generate Na2SO4, which led to the localized sulfation of Na in Pt-O(OH)x-Na, reducing the adsorption of SO2 on Pt-O(OH)x-Na. Thus, reduced SO2 adsorption on the Pt and TiO2 support significantly improved the resistance to SO2 and H2O of Pt/EG-TiO2 catalysts.
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GB/T 7714 | Zhu, Hongtai , Qiu, Wenge , Wu, Rui et al. Alkali metal modified Pt/EG-TiO2 catalysts for CO oxidation with efficient resistance to SO2 and H2O [J]. | CATALYSIS SCIENCE & TECHNOLOGY , 2024 , 14 (11) : 3050-3063 . |
MLA | Zhu, Hongtai et al. "Alkali metal modified Pt/EG-TiO2 catalysts for CO oxidation with efficient resistance to SO2 and H2O" . | CATALYSIS SCIENCE & TECHNOLOGY 14 . 11 (2024) : 3050-3063 . |
APA | Zhu, Hongtai , Qiu, Wenge , Wu, Rui , Li, Kai , He, Hong . Alkali metal modified Pt/EG-TiO2 catalysts for CO oxidation with efficient resistance to SO2 and H2O . | CATALYSIS SCIENCE & TECHNOLOGY , 2024 , 14 (11) , 3050-3063 . |
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摘要 :
N-doped nestlike carbon nanosheets (NCNs-Nx) were prepared successfully by a two-step strategy, namely, the in situ self-assembly hydrothermal synthesis using glucose as the carbon source in the presence of magnesium nitrate and sodium carbonate and the controlled nitrogen doping carbonization using urea as the nitrogen source. The performance of the corresponding Pd/NCNs-Nx catalysts was investigated for the selective hydrogenation of quinolines. The characterization of transmission electron microscopy, nitrogen sorption isotherm measurement, powder X-ray diffraction, X-ray photoelectron spectra, temperature-programmed desorption of pyridine and benzene, and the pyridine adsorption experiments showed that the very high catalytic activities and selectivity of the Pd/NCNs-Nx catalysts were related with the high Pd dispersion and the electronic structure of Pd species as well as the adsorption capacity and the adsorption type of quinoline molecule on the catalyst surface.
关键词 :
N-doped nestlike carbon nanosheets N-doped nestlike carbon nanosheets quinoline hydrogenation quinoline hydrogenation hydrothermal synthesis hydrothermal synthesis ultrasmall palladium catalyst ultrasmall palladium catalyst
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GB/T 7714 | Ding, Xinlei , Chen, Yun , Nan, Junping et al. Ultrasmall Palladium Nanoparticles Anchored on N-Doped Nestlike Carbon Nanosheets for Selective Hydrogenation of Quinolines [J]. | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2022 . |
MLA | Ding, Xinlei et al. "Ultrasmall Palladium Nanoparticles Anchored on N-Doped Nestlike Carbon Nanosheets for Selective Hydrogenation of Quinolines" . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2022) . |
APA | Ding, Xinlei , Chen, Yun , Nan, Junping , Dai, Hengwei , Wang, Yuling , Bai, Guangmei et al. Ultrasmall Palladium Nanoparticles Anchored on N-Doped Nestlike Carbon Nanosheets for Selective Hydrogenation of Quinolines . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2022 . |
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摘要 :
一种提高Pd(OH)2/C催化剂氢解脱苄活性的方法,属于催化剂制备技术领域。具体步骤如下:采用氧化活化和氮掺杂碳包覆有机结合的方法对商业活性炭进行表面改性,得到活性炭@水热碳复合材料。再采用优化的沉积沉淀法制备Pd(OH)2/C催化剂,其在HBIW氢解脱苄反应中催化活性较未改性的商业活性炭有显著提高。该制备方法具有操作简单、工艺稳定、成本低廉等优点。
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GB/T 7714 | 邱文革 , 戴恒玮 , 王瑜凌 et al. 一种提高Pd(OH)2/C催化剂氢解脱苄活性的方法 : CN202211283377.3[P]. | 2022-10-19 . |
MLA | 邱文革 et al. "一种提高Pd(OH)2/C催化剂氢解脱苄活性的方法" : CN202211283377.3. | 2022-10-19 . |
APA | 邱文革 , 戴恒玮 , 王瑜凌 , 丁鑫磊 , 陈云 , 刘亚东 et al. 一种提高Pd(OH)2/C催化剂氢解脱苄活性的方法 : CN202211283377.3. | 2022-10-19 . |
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摘要 :
一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法,属于材料制备技术领域。具体步骤如下:将葡萄糖、硝酸锌、乌洛托品、柠檬酸三钠,以一定比例加入去离子水中,搅拌均匀,然后将上述悬浊液转入自压釜中进行水热处理,得棕色粉末固体,再在惰性气氛中焙烧,盐酸溶液脱除模板,得到“类海胆状”氮掺杂空心碳微球材料。
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GB/T 7714 | 邱文革 , 丁鑫磊 , 陈云 et al. 一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法 : CN202110344391.9[P]. | 2021-03-30 . |
MLA | 邱文革 et al. "一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法" : CN202110344391.9. | 2021-03-30 . |
APA | 邱文革 , 丁鑫磊 , 陈云 , 南俊平 , 张通 , 叶婧桐 . 一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法 : CN202110344391.9. | 2021-03-30 . |
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摘要 :
一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法,属于材料制备技术领域。具体步骤如下:将葡萄糖、硝酸锌、乌洛托品、柠檬酸三钠,以一定比例加入去离子水中,搅拌均匀,然后将上述悬浊液转入自压釜中进行水热处理,得棕色粉末固体,再在惰性气氛中焙烧,盐酸溶液脱除模板,得到“类海胆状”氮掺杂空心碳微球材料。
引用:
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GB/T 7714 | 邱文革 , 丁鑫磊 , 陈云 et al. 一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法 : CN202110344391.9[P]. | 2021-03-30 . |
MLA | 邱文革 et al. "一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法" : CN202110344391.9. | 2021-03-30 . |
APA | 邱文革 , 丁鑫磊 , 陈云 , 南俊平 , 张通 , 叶婧桐 . 一种原位自生长模板水热合成“类海胆状”氮掺杂空心碳微球的方法 : CN202110344391.9. | 2021-03-30 . |
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摘要 :
一种钒钼钛复合氧化物低温SCR催化剂的制备方法,属于催化剂制备技术领域。具体方法包括:将钒前驱体、钼前驱体、有机配体及载体TiO2放入球磨罐中进行球磨,中间视物料情况,重复多次处理黏附物料,以便确保得到混合均匀的粉体。然后焙烧即得钒钼钛复合氧化物催化剂。本发明所述的钒钼钛复合氧化物催化剂制备方法具有工艺简单、物料损耗少、制备周期短、不使用任何溶剂、能耗低等特点,符合绿色合成发展需要。
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GB/T 7714 | 邱文革 , 叶婧桐 , 张通 et al. 一种钒钼钛复合氧化物低温SCR催化剂的制备方法 : CN202110010673.5[P]. | 2021-01-05 . |
MLA | 邱文革 et al. "一种钒钼钛复合氧化物低温SCR催化剂的制备方法" : CN202110010673.5. | 2021-01-05 . |
APA | 邱文革 , 叶婧桐 , 张通 , 丁鑫磊 , 南俊平 , 何洪 . 一种钒钼钛复合氧化物低温SCR催化剂的制备方法 : CN202110010673.5. | 2021-01-05 . |
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摘要 :
Research on the design, synthesis, and application of metal organic frameworks (MOFs) based on flexible ligands has attracted significant attention in recent years owing to their superior performance in applications such as gas adsorption and molecular separation. In this work, two acs-type MOFs and an Nbo-type MOF derived from three different flexible diisophthalate ligands were solvothermally prepared and structurally characterized by single crystal X-ray diffraction, powder X-ray diffraction, and thermogravimetric analysis. Analyses of the data revealed that the topologies of the MOFs were correlated to the dihedral angle between the phenyl rings in the ligands.
关键词 :
Nbo-type MOF Nbo-type MOF acs-type MOF acs-type MOF Flexible diisophthalate ligand Flexible diisophthalate ligand
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GB/T 7714 | Li, Chuanqiang , Liu, Xiang , Qiu, Wenge et al. MOFs with acs and Nbo topologies using flexible diisophthalate ligands: Influence of dihedral angle between phenyl rings on the crystal structure [J]. | INORGANIC CHEMISTRY COMMUNICATIONS , 2021 , 129 . |
MLA | Li, Chuanqiang et al. "MOFs with acs and Nbo topologies using flexible diisophthalate ligands: Influence of dihedral angle between phenyl rings on the crystal structure" . | INORGANIC CHEMISTRY COMMUNICATIONS 129 (2021) . |
APA | Li, Chuanqiang , Liu, Xiang , Qiu, Wenge , Zhang, Yangyang , Zheng, Xuxu . MOFs with acs and Nbo topologies using flexible diisophthalate ligands: Influence of dihedral angle between phenyl rings on the crystal structure . | INORGANIC CHEMISTRY COMMUNICATIONS , 2021 , 129 . |
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摘要 :
一种用于脱除N‑苄基的氢氧化钯碳催化剂的制备方法,属于催化剂制备技术领域。具体步骤如下:将有机羧酸盐与氮源按照不同比例放入球磨罐中,在优化球磨条件下充分混合。然后在优化条件下碳化,得到氮掺杂的多孔碳纳米片载体。再采用沉积沉淀法负载钯活性组分,得到氢氧化钯碳催化剂,其在HBIW氢解脱苄反应中显示出优异的催化活性。该制备方法具有操作简便、工艺稳定、易放大、载体氮掺杂量及孔结构易调控等特点。
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GB/T 7714 | 邱文革 , 南俊平 , 陈云 et al. 一种用于脱除N-苄基的氢氧化钯碳催化剂的制备方法 : CN202110951852.9[P]. | 2021-08-18 . |
MLA | 邱文革 et al. "一种用于脱除N-苄基的氢氧化钯碳催化剂的制备方法" : CN202110951852.9. | 2021-08-18 . |
APA | 邱文革 , 南俊平 , 陈云 , 王瑜凌 , 丁鑫磊 , 戴恒玮 . 一种用于脱除N-苄基的氢氧化钯碳催化剂的制备方法 : CN202110951852.9. | 2021-08-18 . |
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