Cu/SiO2 catalyst prepared by electroless method

✍ Scribed by Ching-Yeh Shiau; J. C. Tsai

• Book ID: 101264155
• Publisher: Wiley (John Wiley & Sons)
• Year: 1998
• Tongue: English
• Weight: 243 KB
• Volume: 73
• Category: Article
• ISSN: 0268-2575
• DOI: 10.1002/(sici)1097-4660(199812)73:4<414::aid-jctb965>3.0.co;2-x

✦ Synopsis

catalysts prepared by an electroless deposition method were Cu/SiO 2 investigated and compared with those by an impregnation method. Copper contents varied from 5% to 15% and was used as support. All catalysts were SiO 2 characterized by BET, DSC, SEM and TPR and tested by an n-butanol dehydrogenation reaction for activities and stabilities. BET analysis showed that the catalysts prepared by the two methods present larger average pore size and less surface area than those of the fresh indicating that smaller pores may get SiO 2 , blocked during the course of preparation. This blockage is more severe in the impregnation method. SEM photos showed that the electroless method produces smaller copper crystals than the impregnated method. The reaction activity was found to be in the order of the calcined electroless copper catalyst [ the fresh electroless copper catalyst [ impregnated copper catalyst.

1998 Society of ( Chemical Industry