Some aspects on the losses of metal from the support in the hydrocarbonylation of methanol

✍ Scribed by M.E Halttunen; M.K Niemelä; A.O.I Krause; A.I Vuori

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 817 KB
• Volume: 144
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(98)00384-7

✦ Synopsis

The stability of the RhrC catalysts during hydrocarbonylation of methanol was studied by subjecting the catalysts to the Ž . Ž . individual reactants as well as their combinations in vapour phase 2508C and 1 bar and in liquid phase 2208C, 120 bar . Neither methanol and methyl iodide, nor hydrogen or carbon monoxide alone effectuated metal leaching, but hydrogen did induce agglomeration of metallic species. In the vapour phase reaction, 20-30% of the metal was lost at 1 bar, and 50% at 15 bar, and in liquid phase the losses were 20-70% at 120 bar, i.e., the losses increased with increasing reaction pressure. Nevertheless, the activated carbon support affected product selectivity in the vapour phase conditions at 1 bar.