Incipient Wetness Impregnation
- Incipient Wetness Impregnation
Incipient wetness impregnation (IW or IWI) is a commonly used technique for the synthesis of heterogeneous catalysts. Typically, the active metal precursor is dissolved in an aqueous or organic solution. Then the metal-containing solution is added to a catalyst support containing the same pore volume as the volume of solution that was added. Capillary action draws the solution into the pores. The catalyst can then be dried and calcined to drive off the volatile components within the solution, depositing the metal on the catalyst surface.
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Look at other dictionaries:
incipient wetness — Condition when just enough liquid has been added to a porous solid to just fill all the pore. If more liquid is added to the mixture, it coats the outer surface, changing the appearance from dull to glistening. On drying, catalyst materials added … Petroleum refining glossary
Heterogene Katalyse — ist eine Form der Katalyse, bei der der Katalysator und die reagierenden Stoffe einer chemischen Reaktion in unterschiedlichen Phasen vorliegen. Die Entwicklung und Umsetzung heterogen katalytischer Verfahren zur Herstellung von Grundchemikalien … Deutsch Wikipedia
