Zeolite decorated highly porous acicular calcium silicate ceramics
Source abstract
Abstract
Abstract Macrocellular calcium silicate (wollastonite) ceramic foams possessing ~86 vol% total porosity were produced from commercial calcium silicate hydrate (xonotlite) nano-size acicular crystals and poly-methyl-methacrylate microbeads (PMMA) (used as sacrificial pore formers). Open cell wollastonite foams had a bi-modal pore size distribution with major modes located ~100 nm due to interparticle porosity and ~100 µm due to the sacrificial pore former. These macrocellular ceramics were then used as a scaffold for MFI type zeolite (silicalite-1) synthesis. Monolayer coffin shaped zeolite crystals (~3 µm size, measured from the c-axis and ~300 nm thickness) were observed with almost full coverage on the inner macro-cell walls. The specific surface area of the components increased from 9.6 m2/g to 108.2 m2/g via zeolite functionalization, leading to components possessing multiscale porosity.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Zeolite Catalysis and Synthesis · Mesoporous Materials and Catalysis · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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