MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202647086433 A) filed by Ifp Energies Nouvelles on July 15, 2026, for Batch Leaching Method For Recycling Catalyst Metals.
Inventors include Blancke, Guillaume; Grandjean, Julien; Carrette, Pierre-Louis; and Delpoux, Olivier.
The application for the patent was published on July 17, 2026, under issue no. 29/2026.
Abstract: The invention relates to a batch method for leaching a spent catalyst comprising a metal from group VIB, and/or a metal from group VIII, and a support based on one or more oxides, characterised in that the method comprises N leaching steps, N being = 2, by bringing the spent catalyst into contact with a leaching solution comprising an organic compound, wherein each leaching step is followed by a solid/liquid separation step, and wherein the method comprises the following successive steps i, i varying from 1 and N: i) bringing into contact: - the spent catalyst containing a metal content C(i-1) with - a leaching solution containing an extracted metal content S(N-i) to produce, after a solid/liquid separation step, - a spent catalyst containing a metal content C(i), and - the leaching solution containing an extracted metal content S(N-i+1), wherein C(i-1) C(i) and S(N-i) S(N-i+1).
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