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]
  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
3. [3]
  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
4. [4]
  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
5. [5]
  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
6. [6]
  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
7. [7]
  Cheng Zheng , Shiying Zheng , Yanping Zhang , Shoutian Zheng , Qiaohua Wei . Synthesis, Copper Content Analysis, and Luminescent Performance Study of Binuclear Copper (I) Complexes with Isomeric Luminescence Shift: A Comprehensive Chemical Experiment Recommendation. University Chemistry, 2024, 39(7): 322-329. doi: 10.3866/PKU.DXHX202310131
8. [8]
  Zongfei YANG , Xiaosen ZHAO , Jing LI , Wenchang ZHUANG . Research advances in heteropolyoxoniobates. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 465-480. doi: 10.11862/CJIC.20230306
9. [9]
  Tongyu Zheng , Teng Li , Xiaoyu Han , Yupei Chai , Kexin Zhao , Quan Liu , Xiaohui Ji . A DIY pH Detection Agent Using Persimmon Extract for Acid-Base Discoloration Popularization Experiment. University Chemistry, 2024, 39(5): 27-36. doi: 10.3866/PKU.DXHX202309107
10. [10]
  Tianyun Chen , Ruilin Xiao , Xinsheng Gu , Yunyi Shao , Qiujun Lu . Synthesis, Crystal Structure, and Mechanoluminescence Properties of Lanthanide-Based Organometallic Complexes. University Chemistry, 2024, 39(5): 363-370. doi: 10.3866/PKU.DXHX202312017
11. [11]
  Cuiping Yang , Huiping Ding , Jinpeng Hou , Kai Li , Weiliang Tian . Reform and Exploration of “Comprehensive and Precise Process” Assessment in Chemical Engineering Principle Experimental Course. University Chemistry, 2024, 39(3): 178-190. doi: 10.3866/PKU.DXHX202309087
12. [12]
  Ji Qi , Jianan Zhu , Yanxu Zhang , Jiahao Yang , Chunting Zhang . Visible Color Change of Copper (II) Complexes in Reversible SCSC Transformation: The Effect of Structure on Color. University Chemistry, 2024, 39(3): 43-57. doi: 10.3866/PKU.DXHX202307050
13. [13]
  Xin XIONG , Qian CHEN , Quan XIE . First principles study of the photoelectric properties and magnetism of La and Yb doped AlN. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1519-1527. doi: 10.11862/CJIC.20240064
14. [14]
  Yonghui Wang , Weilin Chen , Yangguang Li . Knowledge Construction of “Solubility of Inorganic Substances” in Elemental Chemistry Teaching. University Chemistry, 2024, 39(4): 261-267. doi: 10.3866/PKU.DXHX202312102
15. [15]
  Yingchun ZHANG , Yiwei SHI , Ruijie YANG , Xin WANG , Zhiguo SONG , Min WANG . Dual ligands manganese complexes based on benzene sulfonic acid and 2, 2′-bipyridine: Structure and catalytic properties and mechanism in Mannich reaction. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1501-1510. doi: 10.11862/CJIC.20240078
16. [16]
  Yanan Liu , Yufei He , Dianqing Li . Preparation of Highly Dispersed LDHs-based Catalysts and Testing of Nitro Compound Reduction Performance: A Comprehensive Chemical Experiment for Research Transformation. University Chemistry, 2024, 39(8): 306-313. doi: 10.3866/PKU.DXHX202401081
17. [17]
  Xinxin JING , Weiduo WANG , Hesu MO , Peng TAN , Zhigang CHEN , Zhengying WU , Linbing SUN . Research progress on photothermal materials and their application in solar desalination. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1033-1064. doi: 10.11862/CJIC.20230371
18. [18]
  Aiai WANG , Lu ZHAO , Yunfeng BAI , Feng FENG . Research progress of bimetallic organic framework in tumor diagnosis and treatment. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1825-1839. doi: 10.11862/CJIC.20240225
19. [19]
  Xu Liu , Chengfang Liu , Jie Huang , Xiangchun Li , Wenyong Lai . Research on the Application of Diversified Teaching Models in the Teaching of Physical Chemistry. University Chemistry, 2024, 39(8): 112-118. doi: 10.3866/PKU.DXHX202402021
20. [20]
  Tingting Jiang , Jing Chang . Application of Ideological and Political Education in Chemical Analysis Experiment under the Background of Emerging Engineering Education: Taking the Redox Titration Experiment as an Example. University Chemistry, 2024, 39(2): 168-174. doi: 10.3866/PKU.DXHX202308007

Get Citation

PDF

XML

Metrics

PDF Downloads(1726)
Abstract views(2532)
HTML views(1)

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