Deactivation and regeneration of sulfur-poisoned supported palladium complexes

✍ Scribed by Nora S. Fígoli; Pablo C. L'Argentiere

• Book ID: 104423426
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 579 KB
• Volume: 122
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(97)00027-7

✦ Synopsis

The deactivation by thiophene of the [PdCl,(CH,SOCH,),] and the [PdCl,(NH,(CH,),,CH3)2] complexes supported on y-AlaO,, during the selective hydrogenation of styrene has been studied at 353 K and 10 kg cmp2. Although both complexes are deactivated when the feed contains more than 300 ppm thiophene, the [PdCl,(NH,(CH,),,CH,),l supported complex is more sulfur resistant. Thiophene is partially eliminated by hydrogen treatments at 353 K and 10 kg cme2, thereby indicating that thiophene has not substituted, at least totally, the complex ligands.