Home

Citation: Wei Zhaobin*, Chen Yixuan, Li Wenzhao. THE EFFECT OF SUPPORT AND Pd ON REDUCTION OF CuO[J]. Acta Physico-Chimica Sinica, ;1988, 4(05): 478-482. doi: 10.3866/PKU.WHXB19880508 shu

THE EFFECT OF SUPPORT AND Pd ON REDUCTION OF CuO

1.
Dal ian Institute of Chemical Physics; Acaiemia Sinica

Received Date: 23 February 1987
Available Online: 15 October 1988

The reduction behavior of CuO supported on SnO_2, ZnO and Al_2O_3 has been examined, the effect of support and Pd investigated as well. The catalyst samples were studied by TPR and electric conductivity measurement simultaneously.
It was observed that CuO supported on n-type semiconductor oxides SnO_2 and ZnO was more easily reduced than bulk CuO and that on Al_2O_3. The TPR peak of CuO was shifted from 285 ℃ to 210 ℃ and 240 ℃ when supported on SnO_2 and ZnO respectively. By introducing a small amount of Pd (0.4-0.5 Wt.%) onto the catalyst, the reduction peak was further shifted to below 100 ℃ in the case of SnO_2 and by 50-60 ℃ in the case of ZnO.
The conductivity-temperature curve of SnO_2 and ZnO in Ar-H_2 (5%) atmosphere revealed that the n-defects were promptly generated around 200-250 ℃, it was the same temperature region at which the reduction of CuO on these supoorts occurred.
In the presence of Pd additve the onset of conductivity increasing would be observed on SnO_2 and ZnO by exposure to reducing atmosphere even at room temperature, while for CuO/SnO_2 and CuO/ZnO the abrupt change of conductivity occurred around 100-150 ℃. Thus it was reasonably explained that Pd, being an activator for H_2 molecules, promoted the defect generation in semicoductor and in turn the reduction of supported CuO was further enhanced. Noticeably in the case of the occurrence of CuO reduction the electric conductivity change of semiconductor was moderated, it seemed that the negative charge was transferred from support to CuO.
As for the catalyst with Al_2O_3 as support, in accordance with that Al_2O_3 was an insulator, no charge transfer property and no promoting effect on CuO reduction was observed at all.
--------------------
Project supported by the Science Fund of Chinese Academy of Sciences
1. [1]
  Fang Niu , Rong Li , Qiaolan Zhang . Analysis of Gas-Solid Adsorption Behavior in Resistive Gas Sensing Process. University Chemistry, 2024, 39(8): 142-148. doi: 10.3866/PKU.DXHX202311102
2. [2]
  Xiting Zhou , Zhipeng Han , Xinlei Zhang , Shixuan Zhu , Cheng Che , Liang Xu , Zhenyu Sun , Leiduan Hao , Zhiyu Yang . Dual Modulation via Ag-Doped CuO Catalyst and Iodide-Containing Electrolyte for Enhanced Electrocatalytic CO₂ Reduction to Multi-Carbon Products: A Comprehensive Chemistry Experiment. University Chemistry, 2025, 40(7): 336-344. doi: 10.12461/PKU.DXHX202412070
3. [3]
  Hailian Tang , Siyuan Chen , Qiaoyun Liu , Guoyi Bai , Botao Qiao , Liu Fei . Stabilized Rh/hydroxyapatite Catalyst for Furfuryl Alcohol Hydrogenation: Application of Oxidative Strong Metal-Support Interactions in Reducing Conditions. Acta Physico-Chimica Sinica, 2025, 41(4): 2408004-0. doi: 10.3866/PKU.WHXB202408004
4. [4]
  Huiying Xu , Minghui Liang , Zhi Zhou , Hui Gao , Wei Yi . Application of Quantum Chemistry Computation and Visual Analysis in Teaching of Weak Interactions. University Chemistry, 2025, 40(3): 199-205. doi: 10.12461/PKU.DXHX202407011
5. [5]
  Ji-Quan Liu , Huilin Guo , Ying Yang , Xiaohui Guo . Calculation and Discussion of Electrode Potentials in Redox Reactions of Water. University Chemistry, 2024, 39(8): 351-358. doi: 10.3866/PKU.DXHX202401031
6. [6]
  Liping Wang , Huanfeng Wang , Yuling Li , Lingchuan Li , Xiaojing Li , Huifeng Chen , Bowen Ji , Linna Wang . Exploring the Full Process of a Research-Based Teaching Model through the Deep Integration of Theory and Practice: A Case Study of the Self-Designed Scheme for “Determination of Total Acid Content in White Vinegar”. University Chemistry, 2025, 40(5): 244-251. doi: 10.12461/PKU.DXHX202406035
7. [7]
  Jinghua Wang , Yanxin Yu , Yanbiao Ren , Yesheng Wang . Integration of Science and Education: Investigation of Tributyl Citrate Synthesis under the Promotion of Hydrate Molten Salts for Research and Innovation Training. University Chemistry, 2024, 39(11): 232-240. doi: 10.3866/PKU.DXHX202402057
8. [8]
  Xinyu Zhu , Meili Pang . Application of Functional Group Addition Strategy in Organic Synthesis. University Chemistry, 2024, 39(3): 218-230. doi: 10.3866/PKU.DXHX202308106
9. [9]
  Yuanqing Wang , Yusong Pan , Hongwu Zhu , Yanlei Xiang , Rong Han , Run Huang , Chao Du , Chengling Pan . Enhanced Catalytic Activity of Bi₂WO₆ for Organic Pollutants Degradation under the Synergism between Advanced Oxidative Processes and Visible Light Irradiation. Acta Physico-Chimica Sinica, 2024, 40(4): 2304050-0. doi: 10.3866/PKU.WHXB202304050
10. [10]
  Jie WU , Zhihong LUO , Xiaoli CHEN , Fangfang XIONG , Li CHEN , Biao ZHANG , Bin SHI , Quansheng OUYANG , Jiaojing SHAO . Critical roles of AlPO₄ coating in enhancing cycling stability and rate capability of high voltage LiNi_0.5Mn_1.5O₄ cathode materials. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 948-958. doi: 10.11862/CJIC.20240400
11. [11]
  Bing WEI , Jianfan ZHANG , Zhe CHEN . Research progress in fine tuning of bimetallic nanocatalysts for electrocatalytic carbon dioxide reduction. Chinese Journal of Inorganic Chemistry, 2025, 41(3): 425-439. doi: 10.11862/CJIC.20240201
12. [12]
  Yuxin CHEN , Yanni LING , Yuqing YAO , Keyi WANG , Linna LI , Xin ZHANG , Qin WANG , Hongdao LI , Wenmin WANG . Construction, structures, and interaction with DNA of two Sm^Ⅲ₄ complexes. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1141-1150. doi: 10.11862/CJIC.20240258
13. [13]
  Linhan Tian , Changsheng Lu . Discussion on Sextuple Bonding in Diatomic Motifs of Chromium Family Elements. University Chemistry, 2024, 39(8): 395-402. doi: 10.3866/PKU.DXHX202401056
14. [14]
  Yanan Jiang , Yuchen Ma . Brief Discussion on the Electronic Exchange Interaction in Quantum Chemistry Computations. University Chemistry, 2025, 40(3): 10-15. doi: 10.12461/PKU.DXHX202402058
15. [15]
  Ruizhi Duan , Xiaomei Wang , Panwang Zhou , Yang Liu , Can Li . The role of hydroxyl species in the alkaline hydrogen evolution reaction over transition metal surfaces. Acta Physico-Chimica Sinica, 2025, 41(9): 100111-0. doi: 10.1016/j.actphy.2025.100111
16. [16]
  Meng-Yin Wang , Ruo-Bei Huang , Jian-Feng Xiong , Jing-Hua Tian , Jian-Feng Li , Zhong-Qun Tian . Critical Role and Recent Development of Separator in Zinc-Air Batteries. Acta Physico-Chimica Sinica, 2024, 40(6): 2307017-0. doi: 10.3866/PKU.WHXB202307017
17. [17]
  Junjie Zhang , Yue Wang , Qiuhan Wu , Ruquan Shen , Han Liu , Xinhua Duan . Preparation and Selective Separation of Lightweight Magnetic Molecularly Imprinted Polymers for Trace Tetracycline Detection in Milk. University Chemistry, 2024, 39(5): 251-257. doi: 10.3866/PKU.DXHX202311084
18. [18]
  Jiandong Liu , Xin Li , Daxiong Wu , Huaping Wang , Junda Huang , Jianmin Ma . Anion-Acceptor Electrolyte Additive Strategy for Optimizing Electrolyte Solvation Characteristics and Electrode Electrolyte Interphases for Li||NCM811 Battery. Acta Physico-Chimica Sinica, 2024, 40(6): 2306039-0. doi: 10.3866/PKU.WHXB202306039
19. [19]
  Changqing MIAO , Fengjiao CHEN , Wenyu LI , Shujie WEI , Yuqing YAO , Keyi WANG , Ni WANG , Xiaoyan XIN , Ming FANG . Crystal structures, DNA action, and antibacterial activities of three tetranuclear lanthanide-based complexes. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2455-2465. doi: 10.11862/CJIC.20240192
20. [20]
  Xiaojing Tian , Zhichun Huang , Qingsong Zhang , Xu Wang , Ning Yang , Nanping Deng . PNIPAm Thermo-Responsive Nanofibers Mats: Morphological Stability and Response Behavior under Cross-Linking. Acta Physico-Chimica Sinica, 2024, 40(4): 2304037-0. doi: 10.3866/PKU.WHXB202304037

Get Citation

PDF

XML

Metrics

PDF Downloads(1726)
Abstract views(3170)
HTML views(16)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return