Realizable recycling of coal fly ash from solid waste for the fabrication of porous Al 2 TiO 5 ‐Mullite composite ceramic
Source abstract
Abstract
Abstract As the environment deteriorates, recycling of solid waste has become increasingly important. This study aimed to optimize the use of the Fe 2 O 3 , SiO 2 , and CaO components in coal fly ash and to convert coal fly ash into stable porous Al 2 TiO 5 ‐mullite ( AT –M) composite ceramic by sintering with Al OOH and TiO 2 additives at high temperatures. The phase composition, microstructure, apparent porosity, corrosion resistance, and mechanical properties of porous AT –M composite ceramics were systematically investigated. Results indicated that the sintered samples exhibited pore size distributions within the 0.16‐2.9 μm, apparent porosities of approximately 52.8%, and flexural strength of 29.6 MP a. Corrosion resistance data revealed quality losses in the aqueous Na OH and H 2 SO 4 solutions for 10 hours at 0.42% and 2.19%, respectively. After corrosion for 8 hours, the average flexural strength of the samples remained at 21.6 ± 0.53 and 20.84 ± 0.6 MP a, respectively. These findings show that these porous AT –M ceramics may provide enhanced corrosion resistance under alkaline conditions. The porous AT –M composite ceramics may fabricate high‐performance composite membrane supports for the high temperature flue gas filtration.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Recycling and utilization of industrial and municipal waste in materials production · Advanced ceramic materials synthesis · Nuclear materials and radiation effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Material Science and Engineering Shandong University of Science and Technology Qingdao People's Republic of China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Shandong University of Science and Technology
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