PdCl_2/O-MCM-41催化剂制备及其在苯酚氧化羰化反应中的应用  

PdCl_2 Anchored on Hybrid MCM-41:Preparation and Catalytic Application in Oxidative Carbonylation of Phenol

作　　者：范国枝[1] 李志强[1] 黄娇[1] 李涛[1] 李光兴[1] 

机构地区：[1]华中科技大学化学系,武汉430074

出　　处：《无机化学学报》2006年第9期1701-1705,共5页Chinese Journal of Inorganic Chemistry

基　　金：科技部863项目(No.2004AA32G030)。

摘　　要：Hybrid mesoporous silica MCM-41 (O-MCM-41) was prepared using γ-aminopropyltriethoxysilane (APTES) as spacer, tetraethoxysilane as precursor and 2-acetylpyridine as organic moiety. The heterogeneous palladium catalyst (PdCl2 / O-MCM-41) was then prepared by reaction of the hybrid MCM-41 with PdCl2(PhCN)2. The products were characterized by means of IR, XRD, XPS and N2 adsorption-desorption isotherms. The catalytic properties of the supported catalyst in the oxidative carbonylation of phenol to diphenyl carbonate (DPC) were investigated. The yield of DPC and turnover number (TON) reached 5.8% and 29 mol DPC·mol Pd-1, and Pd loss was only 2.7% at 110 °C, 4.4 MPa for catalytic reaction of 5 h with 4.2wt% Pd loading, and molar ratio of phenol to Pd being 1000 in the presence of Cu2O and terahydrofuran (THF).Hybrid mesoporous silica MCM-41 （O-MCM-41） was prepared using γ-aminopropyhriethoxysilane （APTES） as spacer, tetraethoxysilane as precursor and 2-acetylpyridine as organic moiety. The heterogeneous palladium catalyst （PdCl2/O-MCM-41） was then prepared by reaction of the hybrid MCM-41 with PdCl2（PhCN）2. The products were characterized by means of IR, XRD, XPS and N2 adsorption-desorption isotherms. The catalytic properties of the supported catalyst in the oxidative carbonylation of phenol to diphenyl carbonate （DPC） were investigated, The yield of DPC and turnover number （TON） reached 5.8% and 29 tool DPC·mol Pd^-1, and Pd loss was only 2.7% at 110 ℃, 4.4 MPa for catalytic reaction of 5 h with 4.2wt% Pd loading, and molar ratio of phenol to Pd being 1000 in the presence of Cu20 and terahydrofuran （THF）.

关 键 词：MCM-41 负载钯催化剂 氧化羰化 苯酚 

分 类 号：O614.36[理学—无机化学]