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US 11,492,363 B2Granted
Method for preparation of size-modulated UiO-66 and catalyst for hydrolysis of chemical warfare agents with enhanced activity prepared thereby
AssigneeKorea Institute of Science and Technology
InventorsKyung Youl Baek, Chong Min Koo, Soon Man Hong, Seung Sang Hwang, Sangho Cho, Jin Young Seo, Do Xuan Huy, Younghan Song, Sejin Kim, Changju Sung, Yeojin Ahn
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Abstract
The present invention relates to a method for preparing size-modulated UiO-66, which is achieved by modulating the concentrations of reactants, and a catalyst with improved activity of hydrolyzing chemical warfare agents prepared by the method.
Claims11
A method for preparing catalyst particles of UiO-66, comprising:
- providing a first solution comprising ZrCl4 at a concentration of 0.15 M to 0.5 M, and a second solution comprising terephthalic acid (benzene-1,4-dicarboxylic acid;
- BDC) at a concentration of 0.1 M to 0.5 M;
- and
- mixing the first solution and the second solution in a volume ratio of 1:1 to 1:3,
- wherein the first solution comprises hydrochloric acid in an amount of 8 to 15 moles per mole of ZrCl4, and
- the catalyst particles of UiO-66 have an average diameter of 50 nm to 400 nm, and hydrolyze or detoxify chemical warfare agents.
3 more elements
A method for detoxifying chemical warfare agents (CWA) with catalyst particles of UiO-66, the method comprising:
- providing a first solution comprising ZrCl4 at a concentration of 0.15 M to 0.5 M, and a second solution comprising terephthalic acid (benzene-1,4-dicarboxylic acid;
- BDC) at a concentration of 0.1 M to 0.5 M;
- and
- mixing the first solution and the second solution in a volume ratio of 1:1 to 1:3,
- wherein the first solution comprises hydrochloric acid in an amount of 8 to 15 moles per mole of ZrCl4 for making of the catalyst particles of UiO-66 having an average diameter of 50 nm to 400 nm;
- preparing a solution comprising a base and a chemical warfare agent in a water solvent;
- and
- contacting the solution comprising the base and the chemical warfare agent with the catalyst particles of UiO-66, wherein the method of detoxifying has a conversion rate of at least 50% at one minute or less of contact time as measured with a simulated warfare agent, methylparaoxone.
5 more elements
Dependencies are inferred from the claim text.