US Patent Issued to CLARIANT INTERNATIONAL on Dec. 23 for "Chromium-free hydrogenation catalyst having increased water and acid stability" (German Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,658, issued on Dec. 23, was assigned to CLARIANT INTERNATIONAL LTD (Muttenz, Switzerland).

"Chromium-free hydrogenation catalyst having increased water and acid stability" was invented by Christoph Doerfelt (Munich), Manuel Pfanzelt (Sauerlach, Germany), Goetz Burgfels (Bad Aibling, Germany) and Frank Grossmann (Munich).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an improved catalyst on the basis of a shaped catalyst body for hydrogenating carbonyl groups in organic compounds under the effect of acids and water, characterized in that the shaped catalyst body contains copper in an amount of 17.5 to 34.5 wt. %, relat...