A novel homogeneous catalyst made of poly(N-vinyl-2-pyrrolidone)-CuCl2 complex for the oxidative carbonylation of methanol to dimethyl carbonate

✍ Scribed by Jun-Cheng Hu; Yong Cao; Ping Yang; Jing-Fa Deng; Kang-Nian Fan

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 111 KB
• Volume: 185
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(02)00052-3

✦ Synopsis

A new type of homogeneous catalyst for dimethyl carbonate (DMC) synthesis by oxidative carbonylation of methanol in the liquid-phase reaction was investigated. The polymer-bound monometallic PVP-CuCl 2 catalyst (PVP, poly(N-vinyl-2-pyrrolidone)) prepared by the combination of an alcoholic solutions of PVP and CuCl 2 exhibits excellent catalytic performance for the oxidative carbonylation of methanol with carbon monoxide and oxygen to DMC under 3.0 MPa (P O 2 = 0.24 MPa and P CO = 2.76 MPa) pressure at temperature around 140-160 • C. The catalyst exhibits much higher activity and selectivity than non-supported CuCl 2 in the DMC synthesis reaction. The remarkable increase in the conversion and selectivity is attributed to the presence of a strong complexation effect between Cu(II) and the amide ligands in the polymer chains.