Date:

2025-04-30

Title of Paper:

Hierarchically porous alumina ceramic catalyst carrier prepared by powder bed fusion

Journal:

Journal of the European Ceramic Society

Summary:

Hierarchical porous ceramic catalyst carriers, which exhibit good catalytic performance, are widely used in the
petrochemical industry. However, the fabrication of ceramic carriers with hierarchically porous structures is
highly challenging for conventional preparation processes. Thus, a strategy for designing and manufacturing
hierarchically porous alumina ceramic catalyst carriers using aluminium trihydrate as raw material and powder
bed fusion (PBF) as the forming process is proposed herein. PBF process parameters were optimised to define the
processing window for creating ceramics with complex structures. Controllable pore characteristics in nano- and
microscales has been achieved by combining dehydroxylation, PBF, and post-sintering processes. The effects of
raw material composition and process parameters on crush strength, porosity, and specific surface area were
systematically investigated. The resulting porous ceramics exhibit a crush strength of 86.03±18.10 N/cm,
specific surface area of 1.958±0.123 m2/g, and porosity of 64.85±1.15% with a multipeak distribution at
95±1.23 nm and 17.76±0.14 μm. The possibility of complicated monolithic catalyst carrier structures with
bionic leaf vein characters has been validated for potential industrial applications.

Co-author:

Huo, Cunbao Tian, Xiaoyong Nan, Yang Li, Dichen

Volume:

40

Page Number:

4253-4264

Translation or Not:

No

Date of Publication:

2020-04-28