Role of boron species in the hydrogenation of o-chloronitrobenzene over polymer-stabilized ruthenium colloidal catalysts

✍ Scribed by Xiaoping Yan; Manhong Liu; Hanfan Liu; Kong Yong Liew

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 289 KB
• Volume: 169
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(00)00565-3

✦ Synopsis

The role of boron species in selective hydrogenation of o-chloronitrobenzene (o-CNB) over polymer-stabilized ruthenium colloids has been studied. Of the two kinds of boron species (boride and borate) present in ruthenium colloids prepared by NaBH 4 reduction, it was verified that only borate had a significant effect on the hydrogenation of o-CNB, while boride performed as a spectator. When metal cations were added into ruthenium colloidal catalyst system as modifiers, respectively, we observed that the synergetic effect between borate and metal cations occurred in these systems. It is suggested that metal complex ions were formed between the metal cations and borate ions.