Mullite production by valorization of a hydrodesulphurization catalyst waste.
Saved in:
| Title: | Mullite production by valorization of a hydrodesulphurization catalyst waste. |
|---|---|
| Authors: | Carrizosa, Rafael1 (AUTHOR), De Noni, Agenor2 (AUTHOR), López‐Delgado, Aurora1 (AUTHOR), Padilla, Isabel1 (AUTHOR), Romero, Maximina1 (AUTHOR) mromero@ietcc.csic.es |
| Source: | Journal of the American Ceramic Society. Jan2026, Vol. 109 Issue 1, p1-15. 15p. |
| Subjects: | Mullite, Ceramic materials, Aluminum silicates, Catalysts recycling, Petroleum chemicals industry, Heat treatment, Crystallinity, Silica |
| Abstract: | The development of mullite‐based ceramic materials from the solid waste generated after the metal recovery process of spent catalyst waste originated in the petrochemical industry offers promising economic and environmental prospects. Mullite, an aluminosilicate with exceptional thermal and mechanical strength properties, is highly valued in various industrial applications. In this context, the present study aims at the formation of mullite from this amorphous catalyst waste with high alumina and silica content. The results indicate that above 1150°C, a solid‐state reaction develops between alumina and silica, leading to a product with high crystallinity and significant amounts of mullite and corundum. In terms of synthesis parameters, it has been experimentally determined that a temperature of 1200°C and a dwell time of 30 min are optimal to obtain 50 wt.% of mullite and 32 wt.% of corundum. The amorphous content and crystalline phases of the main thermal treatments were quantified using Rietveld refinement. Finally, the incorporation of amorphous silica significantly favors the formation of mullite, resulting in a product with a mullite content of 81% with an 18 wt.% of amorphous silica addition and promoting the formation of crystals with different morphologies. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
