Productos Quimicos Monterrey

Productos Quimicos Monterrey (Mexico) Shanghai Chemical Reagent (China) Spectrum Chemical Mfg. 

The catalysts were prepared by impregnation with excess solution of the supports and then subsequently dried in a rotary evaporator. The palladium employed was the granular metal dissolved in nitric acid (Productos Quimicos Monterrey) while the copper was its nitrate (Aldrich). All of the catalysts were dried at 120°C for 8 h and subsequently calcined at 500°C in flowing air for a further 8 h. For the bimetallic Pd-Cu catalysts the supports were initially impregnated with copper, dried and calcined then subsequently impregnated with palladium then dried and calcined. The drying and calcination routines between each impregnation were the same as that employed with the monometallic catalysts. The catalysts were characterised by atomic adsorption spectroscopy, TPR, TPD-NH3, TPD-CO, these values have been published elsewhere [5]. 

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