Back to results
US 10,294,186 B2Granted
Catalysts for the production of acrylic acid or its derivatives
AssigneeThe Procter & Gamble Company
InventorsJuan Esteban Velasquez, Janette Villalobos Lingoes, Dimitris Ioannis Collias, Jane Ellen Godlewski, Marc Andrew Mamak
Life of this patent
Estimating the term…
Abstract
Catalysts for dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity, short residence time, and without significant conversion to undesired side products, such as, for example, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed protonated monophosphates. Methods of preparing the catalysts are also provided.
Claims1
A catalyst comprising:
- a. monophosphate salt KH2PO4;
- and
- b. monophosphate salt MIIHPO4;
- wherein MII is selected from the group consisting of Mg, Ca, Sr, and Ba;
- and further, wherein the molar ratio of said MIIHPO4 to said KH2PO4 in said catalyst is between about 0.2 and about 5.
2 more elements
Dependencies are inferred from the claim text.