Elucidation of hydrolysis reaction mechanism of tungsten hexafluoride (WF6) using first-principles calculations

Hyunwook Jung, Jeemin Hwang, Hoje Chun, Byungchan Han

Research output: Contribution to journalArticle

Abstract

We identify hydrolysis reaction mechanism of water-reactive WF6 and its accompanying intermediates using first-principles calculations. For the purpose, we evaluate activation and free energy diagrams of elementary reaction steps. We find that WF6, WOF4, and WO2F2 form stable adducts, which quickly reacts with H2O by substituting the ligand F. Gaseous WOF4, WO2F2, WO3 are predicted as unstable in the increasing order, but polymerization reduces their instability, leading to solidification. In overall reaction, WOF4 hydrolysis is the bottleneck due to significantly higher activation barrier of trans isomeric complex than cis counterpart.

Original languageEnglish
Pages (from-to)99-102
Number of pages4
JournalJournal of Industrial and Engineering Chemistry
Volume70
DOIs
Publication statusPublished - 2019 Feb 25

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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