Home

Citation: YAO Wei, GUO Yang-Long, LU Guan-Zhong, GUO Yun, WANG Yan-Qin, ZHANG Zhi-Gang, HE Dan-Nong. Gas Phase Epoxidation of Propylene over a Modified Ag/α-Al₂O₃ Catalyst[J]. Acta Physico-Chimica Sinica, ;2010, 26(06): 1579-1584. doi: 10.3866/PKU.WHXB20100531 shu

Gas Phase Epoxidation of Propylene over a Modified Ag/α-Al₂O₃ Catalyst

1.
Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, P. R. China; National Engineering Research Center for Nanotechnology, Shanghai 200241, P. R. China

Received Date: 14 October 2009
Available Online: 7 April 2010

Modified Ag/α-Al2O3 catalysts were prepared for the gas phase epoxidation of propylene by molecular oxygen. We used temperature-programmed desorption of oxygen (O2-TPD) to study the desorption behavior of oxygen from the catalyst's surface. Results showed that over the Ag/α-Al2O3 catalyst propylene was completely oxidized to CO2 and H2O. When the catalyst was modified with K2O, a small amount of propylene oxide (PO) was obtained. When the catalyst was modified with Y2O3, a very small amount of propanal and acetone was obtained. Adding 0.1% (w) Y2O3 to the Ag-K2O/α-Al2O3 catalyst significantly improved its catalytic performance for the gas phase epoxidation of propylene. Under reaction conditions of 0.1 MPa, 245 ℃, a feed gas of 20%C3H6/8%O2/72%N2 and gas hourly space velocity (GHSV) of 2000 h-1, the conversion of propylene was 4.0%and the selectivity to PO was 46.8%over the 20% (w)Ag-0.1%Y2O3-0.1%K2O/α-Al2O3 catalyst. O2-TPD showed that when the 20%Ag/α-Al2O3 catalyst was modified with Y2O3, K2O or Y2O3-K2O, the amount of adsorbed oxygen in the higher temperature region for the total oxidation of propylene decreased and the amount of adsorbed oxygen in the lower temperature region for the gas phase epoxidation of propylene was unchanged, which improves the selectivity to PO.
- Silver/alumina catalyst,
- Epoxidation of propylene,
- Propylene oxide,
- O2-TPD
1. [1]
  Zhuoyan Lv , Yangming Ding , Leilei Kang , Lin Li , Xiao Yan Liu , Aiqin Wang , Tao Zhang . Light-Enhanced Direct Epoxidation of Propylene by Molecular Oxygen over CuO_x/TiO₂ Catalyst. Acta Physico-Chimica Sinica, 2025, 41(4): 2408015-0. doi: 10.3866/PKU.WHXB202408015
2. [2]
  Guojie Xu , Fang Yu , Yunxia Wang , Meng Sun . Introduction to Metal-Catalyzed β-Carbon Elimination Reaction of Cyclopropenones. University Chemistry, 2024, 39(8): 169-173. doi: 10.3866/PKU.DXHX202401060
3. [3]
  Ruolin CHENG , Haoran WANG , Jing REN , Yingying MA , Huagen LIANG . Efficient photocatalytic CO₂ cycloaddition over W₁₈O₄₉/NH₂-UiO-66 composite catalyst. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 523-532. doi: 10.11862/CJIC.20230349
4. [4]
  Lina Guo , Ruizhe Li , Chuang Sun , Xiaoli Luo , Yiqiu Shi , Hong Yuan , Shuxin Ouyang , Tierui Zhang . Effect of Interlayer Anions in Layered Double Hydroxides on the Photothermocatalytic CO₂ Methanation of Derived Ni-Al₂O₃ Catalysts. Acta Physico-Chimica Sinica, 2025, 41(1): 100002-0. doi: 10.3866/PKU.WHXB202309002
5. [5]
  Jiahui YU , Jixian DONG , Yutong ZHAO , Fuping ZHAO , Bo GE , Xipeng PU , Dafeng ZHANG . The morphology control and full-spectrum photodegradation tetracycline performance of microwave-hydrothermal synthesized BiVO₄:Yb³⁺,Er³⁺ photocatalyst. Journal of Fuel Chemistry and Technology, 2025, 53(3): 348-359. doi: 10.1016/S1872-5813(24)60514-1
6. [6]
  Yi YANG , Shuang WANG , Wendan WANG , Limiao CHEN . Photocatalytic CO₂ reduction performance of Z-scheme Ag-Cu₂O/BiVO₄ photocatalyst. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 895-906. doi: 10.11862/CJIC.20230434
7. [7]
  Ruolin CHENG , Yue WANG , Xiyao NIU , Huagen LIANG , Ling LIU , Shijian LU . Efficient photothermal catalytic CO₂ cycloaddition over W₁₈O₄₉/rGO composites. Chinese Journal of Inorganic Chemistry, 2025, 41(7): 1276-1284. doi: 10.11862/CJIC.20240424
8. [8]
  Tao Wen , Tao Zhang , Changguo Sun , Jinyu Liu . Preparation of Dess-Martin Reagent and Its Application in Oxidizing Cyclohexanol. University Chemistry, 2024, 39(5): 20-26. doi: 10.3866/PKU.DXHX202309055
9. [9]
  Hailang JIA , Pengcheng JI , Hongcheng LI . Preparation and performance of nickel doped ruthenium dioxide electrocatalyst for oxygen evolution. Chinese Journal of Inorganic Chemistry, 2025, 41(8): 1632-1640. doi: 10.11862/CJIC.20240398
10. [10]
  Hailang JIA , Hongcheng LI , Pengcheng JI , Yang TENG , Mingyun GUAN . Preparation and performance of N-doped carbon nanotubes composite Co₃O₄ as oxygen reduction reaction electrocatalysts. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 693-700. doi: 10.11862/CJIC.20230402
11. [11]
  Peng YUE , Liyao SHI , Jinglei CUI , Huirong ZHANG , Yanxia GUO . Effects of Ce and Mn promoters on the selective oxidation of ammonia over V₂O₅/TiO₂ catalyst. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 293-307. doi: 10.11862/CJIC.20240210
12. [12]
  Wang Wang , Yucheng Liu , Shengli Chen . Use of NiFe Layered Double Hydroxide as Electrocatalyst in Oxygen Evolution Reaction: Catalytic Mechanisms, Electrode Design, and Durability. Acta Physico-Chimica Sinica, 2024, 40(2): 2303059-0. doi: 10.3866/PKU.WHXB202303059
13. [13]
  Liuyun Chen , Wenju Wang , Tairong Lu , Xuan Luo , Xinling Xie , Kelin Huang , Shanli Qin , Tongming Su , Zuzeng Qin , Hongbing Ji . Soft template-induced deep pore structure of Cu/Al₂O₃ for promoting plasma-catalyzed CO₂ hydrogenation to DME. Acta Physico-Chimica Sinica, 2025, 41(6): 100054-0. doi: 10.1016/j.actphy.2025.100054
14. [14]
  Chi Li , Jichao Wan , Qiyu Long , Hui Lv , Ying Xiong . N-Heterocyclic Carbene (NHC)-Catalyzed Amidation of Aldehydes with Nitroso Compounds. University Chemistry, 2024, 39(5): 388-395. doi: 10.3866/PKU.DXHX202312016
15. [15]
  Wenlong LI , Xinyu JIA , Jie LING , Mengdan MA , Anning ZHOU . Photothermal catalytic CO₂ hydrogenation over a Mg-doped In₂O_3-x catalyst. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 919-929. doi: 10.11862/CJIC.20230421
16. [16]
  Yi Yang , Xin Zhou , Miaoli Gu , Bei Cheng , Zhen Wu , Jianjun Zhang . Femtosecond transient absorption spectroscopy investigation on ultrafast electron transfer in S-scheme ZnO/CdIn₂S₄ photocatalyst for H₂O₂ production and benzylamine oxidation. Acta Physico-Chimica Sinica, 2025, 41(6): 100064-0. doi: 10.1016/j.actphy.2025.100064
17. [17]
  Zhanggui DUAN , Yi PEI , Shanshan ZHENG , Zhaoyang WANG , Yongguang WANG , Junjie WANG , Yang HU , Chunxin LÜ , Wei ZHONG . Preparation of UiO-66-NH₂ supported copper catalyst and its catalytic activity on alcohol oxidation. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 496-506. doi: 10.11862/CJIC.20230317
18. [18]
  Jinwang Wu , Qijing Xie , Chengliang Zhang , Haifeng Shi . Rationally Designed ZnFe_1.2Co_0.8O₄/BiVO₄ S-Scheme Heterojunction with Spin-Polarization for the Elimination of Antibiotic. Acta Physico-Chimica Sinica, 2025, 41(5): 100050-0. doi: 10.1016/j.actphy.2025.100050
19. [19]
  Jianjun LI , Mingjie REN , Lili ZHANG , Lingling ZENG , Huiling WANG , Xiangwu MENG . UV-assisted degradation of tetracycline hydrochloride by MnFe₂O₄@activated carbon activated persulfate. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1869-1880. doi: 10.11862/CJIC.20240187
20. [20]
  Qing Li , Guangxun Zhang , Yuxia Xu , Yangyang Sun , Huan Pang . P-Regulated Hierarchical Structure Ni₂P Assemblies toward Efficient Electrochemical Urea Oxidation. Acta Physico-Chimica Sinica, 2024, 40(9): 2308045-0. doi: 10.3866/PKU.WHXB202308045

Get Citation

PDF

XML

Metrics

PDF Downloads(1189)
Abstract views(2436)
HTML views(11)

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

Gas Phase Epoxidation of Propylene over a Modified Ag/α-Al2O3 Catalyst

Metrics

通讯作者: 陈斌, bchen63@163.com

Gas Phase Epoxidation of Propylene over a Modified Ag/α-Al₂O₃ Catalyst