Methods for Determining the Metal Crystallite Size of Ni Supported Catalysts

作者：Geyer Reinhard^*; Hunold Juergen; Keck Michael; Kraak Peter; Pachulski Axel; Schoedel Rainer

来源：Chemie Ingenieur Technik, 2012, 84(1-2): 160-164.

DOI：10.1002/cite.201100101

• Catalysts
• Chemisorption
• Crystallite size
• Nickel
• Temperature programmed reaction
• X-ray diffraction

Catalysts containing transition metals like nickel are frequently used in technical hydrogenation reactions. Typically their activity and selectivity are determined via metal dispersion. XRD, H2 TPD, volumetric chemisorption of H2 and CO pulse chemisorption were applied to determine the Ni crystallite size of Ni-containing catalysts. The methods were compared with regard to their information content and validity as well as their applicability in quality control during industrial manufacturing of catalysts. Pulse chemisorption of CO showed the best results for utilization in quality control.

• 出版日期2012-1