Work

Electrically Heated Multilayer Ceramic Composite Tubes for High‐Temperature Endothermic Reactions

Year: 2025

Type: article

Abstract: A high‐temperature reactor concept using electrically heated oxide ceramic tubes is investigated with the aim of replacing fossil fuels with renewable electricity and reducing CO₂ emissions in the chemical industry. The multilayer ceramic composite tubes are resistant to thermal stress and consist of an inner monolithic oxide ceramic, a thin metallic heating element, and an outer Al₂O₃/Al₂O₃ ceramic matrix composite (OCMC) layer. Dry reforming of methane was tested up to 1150 °C, with and without catalyst. Due to the non‐gas‐tight OCMC layer, process conditions had to be adjusted to prevent soot formation on the heater. A tube‐in‐tube design allows for heat recovery and reduces the outlet temperatures. Conversion rates of up to 80 % have been achieved, but temperature drops due to the endothermic reaction can lead to secondary soot forming conditions.

Source: Chemie Ingenieur Technik

DOI: 10.1002/cite.202500005

Authors: Daniel Kleschew, Matthias Sentko, Ulrich Nieken

Institutions: University of Stuttgart, BASF (Germany)

Language: English

Topic: Catalysts for Methane Reforming

Subfield: Catalysis

Field: Chemical Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $4,030