Hydrolysis of evaporated Zn in a hot wall flow reactor

Tareq Abu Hamed, Jane H Davidson, Mark R Stolzenburg

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Hydrolysis of Zn is investigated as the second step in a ZnO/Zn redox solar water splitting process. Zinc is evaporated and hydrolyzed with steam in a hot wall flow tubular reactor. The influence of the reactor temperature distribution and residence time on hydrogen conversion was measured for furnace set point temperatures of 1023 K and 1073 K. The yield of ZnO aerosol was measured in situ using a scanning differential mobility sizer. The composition and morphology of the solid product were characterized with X-ray diffraction and microscopy. Hydrogen conversions of 87-96% at temperatures above zinc saturation are attributed primarily to hydrolysis of zinc(g) at the wall of the reactor at temperatures from 800 K to 1077 K.

Original languageEnglish (US)
Pages (from-to)410101-410107
Number of pages7
JournalJournal of Solar Energy Engineering, Transactions of the ASME
Volume130
Issue number4
DOIs
StatePublished - Nov 1 2008

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