One Step Backward Is Two Steps Forward

Enhancing the Hydrolysis Rate of UiO-66 by Decreasing [OH-]

Michael J. Katz, Rachel C. Klet, Su Young Moon, Joseph E. Mondloch, Joseph T Hupp, Omar K. Farha

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The rapid destruction of chemical threats, such as phosphate-based nerve agents, is of considerable current interest. The hydrolysis of the nerve-agent simulant methylparaoxon, as catalyzed by UiO-66 and UiO-67, was examined as a function of pH. Surprisingly, even though typical phosphate-ester hydrolysis mechanisms entail nucleophilic attack of the simulant by aqueous hydroxide, the rate of hydrolysis accelerates as the solution pH is lowered. The unexpected behavior is attributed to a pH-dependent composition change followed by ligand substitution at the Zr6-based node.

Original languageEnglish
Pages (from-to)4637-4642
Number of pages6
JournalACS Catalysis
Volume5
Issue number8
DOIs
Publication statusPublished - Aug 7 2015

Fingerprint

Hydrolysis
Phosphates
Esters
Substitution reactions
Ligands
Chemical analysis
hydroxide ion
Nerve Agents
methylparaoxon

Keywords

  • defects
  • hydrolysis
  • metal-organic frameworks
  • pH
  • phosphate nerve agents
  • UiO

ASJC Scopus subject areas

  • Catalysis

Cite this

One Step Backward Is Two Steps Forward : Enhancing the Hydrolysis Rate of UiO-66 by Decreasing [OH-]. / Katz, Michael J.; Klet, Rachel C.; Moon, Su Young; Mondloch, Joseph E.; Hupp, Joseph T; Farha, Omar K.

In: ACS Catalysis, Vol. 5, No. 8, 07.08.2015, p. 4637-4642.

Research output: Contribution to journalArticle

Katz, Michael J. ; Klet, Rachel C. ; Moon, Su Young ; Mondloch, Joseph E. ; Hupp, Joseph T ; Farha, Omar K. / One Step Backward Is Two Steps Forward : Enhancing the Hydrolysis Rate of UiO-66 by Decreasing [OH-]. In: ACS Catalysis. 2015 ; Vol. 5, No. 8. pp. 4637-4642.
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