Deoligomerization of cyclooligosiloxanes with dimethyl carbonate over solid-base catalysts

被引：24
|
作者：
Okamoto, M
Miyazaki, K
Kado, A
Suzuki, S
Suzuki, E [1 ]
机构：
[1] Tokyo Inst Technol, Dept Appl Chem, Meguro Ku, Tokyo 1528552, Japan
[2] Tokyo Inst Technol, Dept Chem & Mat Sci, Meguro Ku, Tokyo 1528550, Japan
来源：
CATALYSIS LETTERS | 2003年 / 88卷 / 3-4期
关键词：
silicone; polysiloxane; recycling; dimethyl carbonate; deoligomerization;
D O I：
10.1023/A:1024093218443
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Cyclooligosiloxanes, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane were efficiently deoligomerized with dimethyl carbonate using an alumina-supported potassium fluoride catalyst under a continuous vapor-phase flow condition to form dimethoxydimethylsilane monomer. In the deoligomerization of larger cyclooligosiloxanes, the catalyst was deactivated. The addition of a small amount of methanol suppressed the deactivation. These results strongly suggest a new method for recycling silicone via monomers.
引用
收藏
页码：115 / 118
页数：4
相关论文
共 50 条
  • [41] Layered double hydroxides as base catalysts for the synthesis of dimethyl carbonate
    Gandara-Loe, Jesus
    Jacobo-Azuara, A.
    Silvestre-Albero, Joaquin
    Sepulveda-Escribano, Antonio
    Ramos-Fernandez, Enrique V.
    CATALYSIS TODAY, 2017, 296 : 254 - 261
  • [42] Catalytic Conversion of Biomass-Derived 1,2-Propanediol to Propylene Oxide over Supported Solid-Base Catalysts
    Liu, Chengyun
    Xin, Junna
    Tan, Jihuai
    Liu, Tuan
    Kessler, Michael R.
    Zhang, Jinwen
    ACS OMEGA, 2018, 3 (08): : 8718 - 8723
  • [43] A novel route for the synthesis of methyl acetoacetate from dimethyl carbonate and acetone over solid base
    Wu, Dudu
    Fu, Xin
    Li, Junping
    Zhao, Ning
    Wei, Wei
    Sun, Yuhan
    CATALYSIS TODAY, 2008, 131 (1-4) : 372 - 377
  • [44] Green approaches to highly selective processes: Reactions of dimethyl carbonate over both zeolites and base catalysts
    Selva, Maurizio
    PURE AND APPLIED CHEMISTRY, 2007, 79 (11) : 1855 - 1867
  • [45] Research on the MgO-supported solid-base catalysts aimed at the sweetening of hydrogenated gasoline
    Zhang, Yufen
    Liu, Zhenyi
    Wang, Wennian
    Cheng, Zhenzhen
    Shen, Baojian
    FUEL PROCESSING TECHNOLOGY, 2013, 115 : 63 - 70
  • [46] BASE-STRENGTH DISTRIBUTION STUDIES OF SOLID-BASE SURFACES
    TAKE, JI
    KIKUCHI, N
    YONEDA, Y
    JOURNAL OF CATALYSIS, 1971, 21 (02) : 164 - &
  • [47] Vapor-phase aldolization of n-butyraldehyde to 2-ethyl-2-hexenal over solid-base catalysts
    Zhu, WD
    Ko, AN
    JOURNAL OF THE CHINESE CHEMICAL SOCIETY, 2000, 47 (06) : 1237 - 1242
  • [48] Benzimidazole-Containing Porous Organic Polymers as Highly Active Heterogeneous Solid-Base Catalysts
    Wang, Yangxin
    Wang, Lijun
    Liu, Caiping
    Wang, Ruihu
    CHEMCATCHEM, 2015, 7 (10) : 1559 - 1565
  • [49] Transesterification of ethylene carbonate and dimethyl terephthalate over various catalysts
    Du, ZP
    Yao, J
    Wang, GY
    CHINESE JOURNAL OF CATALYSIS, 2005, 26 (08) : 637 - 638
  • [50] The decomposition of dimethyl carbonate over carbon supported Cu catalysts
    G. Merza
    B. László
    A. Oszkó
    K. Baán
    A. Erdőhelyi
    Reaction Kinetics, Mechanisms and Catalysis, 2016, 117 : 623 - 638
12345