Environmental-Friendly Economical Cordierite-Mullite-based Ceramics for Kiln Furniture Production and Supports for CO2 Hydrogenation towards C5+ fuels

Boldizsár, Tamás and Bali, Henrik and Szenti, Imre and Sebők-Papp, Imre and Bán, Zsolt and Herczeg, Sára and Barna, Gábor and Sápi, András and Kukovecz, Ákos and Kónya, Zoltán (2023) Environmental-Friendly Economical Cordierite-Mullite-based Ceramics for Kiln Furniture Production and Supports for CO2 Hydrogenation towards C5+ fuels. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 43 (13). pp. 5596-5605. ISSN 0955-2219

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Abstract

In this study, lightweight cordierite-mullite ceramics with high strength and high thermal-shock resistance were successfully synthesized by solid-state method with the usage of hollow ceramic microspheres. After careful physico-chemical and mechanical characterization, we gained an economical cordierite material with a low bulk density of 1.40 g/cm3 with an apparent porosity of 44.78%, a flexural strength of 20.17 MPa and a coefficient of thermal expansion of 2.26 × 10−6 oC−1 compared to the bulk counterpart with a bulk density of 2.00 g/cm3 with an apparent porosity of 25.75%, a flexural strength of 23.69 MPa and a coefficient of thermal expansion of 2.47 × 10−6 oC−1. As a catalyst support of Na-FeOx, the economical cordierite has proved the same stability and activity in CO2 hydrogenation towards C5+ fuels as bulk cordierite-based catalyst counterparts.

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