Reactor comprising an extractive membrane, preparation and use

EP4727682A1Pending Publication Date: 2026-04-22TOTALENERGIES ONETECH
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
TOTALENERGIES ONETECH
Filing Date
2024-06-13
Publication Date
2026-04-22

AI Technical Summary

Technical Problem

Dehydrogenation reactions in industrial processes are limited to about 50% conversion and result in significant coking of catalysts, requiring continuous decoking, and existing membrane technologies face challenges with defect formation and fragility, which hampers efficient hydrogen extraction and membrane durability.

Method used

A proton-conducting catalytic membrane with a layered structure comprising an anode, an electrolyte layer of perovskite materials, and a porous cathode, where the anode is devoid of pores and contains dehydrogenation catalysts, enhancing hydrogen extraction and proton transport, and a dehydrogenation reactor design with multiple membranes to minimize coking and improve catalyst activity.

Benefits of technology

The membrane configuration increases hydrogen extraction efficiency, improves alkane conversion to alkenes, and reduces coking, achieving higher propane conversion and propene selectivity while preserving catalyst activity, with a hydrogen extraction ratio ranging from 0.20 to 0.99 and minimized coke formation.

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Abstract

The disclosure concerns a proton-conducting catalytic membrane remarkable in that it comprises an anode, an electrolyte layer disposed on top of the anode and a porous cathode disposed on top of the electrolyte layer, wherein the anode comprises at least one dehydrogenation catalyst and is devoid of pores, and wherein the electrolyte layer comprises one or more perovskite materials with one or more cations selected from Ba, Ce, Zr, Y, La, Sr, Mn, Fe, Eu, Tb, Ni, Yb, Pr, Sm, Zn, Gd, Er, Co, Nd, or any mixtures thereof. The disclosure is also about a dehydrogenation reactor comprising such proton-conducting catalytic membrane as well as to method for making such proton-conducting catalytic membrane.
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