THE WILKINSON COMPLEX AS A HETEROGENEOUS CATALYST IN THE PARTIAL HYDROGENATION OF 1-HEPTYNE. REGENERATION OF THE COMPLEX

Química Nova

Paredes, José¹  Universidad Nacional del Litoral, Santa Fe, Argentina¹  Cagnola, Edgardo¹  Quiroga, Mónica¹  Liprandi, Domingo¹  Carrara, Nicolás¹ 

关键词:  Wilkinson complex;    partial hydrogenation;    heterogeneous catalyst;    complex regeneration;   

DOI  :  10.5935/0100-4042.20160066

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The Wilkinson complex was tested as a catalyst in the partial hydrogenation of 1-heptyne, a medium chain alkyne, at a temperature of T = 303 K and hydrogen pressure PH2 = 150 kPa. The tests were performed in homogeneous system as well as heterogeneous system, supporting the complex on i) γ-Al2O3 and ii) a commercial carbonaceous material, RX3. Characterization by means of XPS and FTIR revealed that the anchored complex did not lose its chemical identity, being the catalytically active species. The Wilkinson complex on RX3 showed better conversions and selectivities, higher than the Lindlar catalyst, used as a reference. Additionally, it was proposed a method to recover Rh as a metal from the remaining solutions, and from it regenerate the complex to be reused from it.

【 授权许可】

Unknown