Mesoporous silica derived from kaolin: Specific surface area enlargement via a new zeolite-involved template-free strategy
Source abstract
Abstract
Abstract A novel zeolite-involved template-free strategy is proposed and demonstrated to process natural kaolin into mesoporous silica with enlarged specific surface area (SBET). Kaolin was calcined and alkali-treated into aluminosilica zeolite, and then transformed into amorphous mesoporous silica with SBET of 751.5 m2/g and pore size of ~ 4.0 nm at the maximum probability in a subsequent acid-treatment. The alkali-treatment and the formation of zeolite intermediate were found to be the key for the SBET enlargement. The mechanisms were studied by XRD, XRF, SEM, TEM and N2 adsorption/desorption. The mesoporous silica shows favorable adsorption ability towards methylene blue with a monolayer adsorption capacity of up to 756.5 mg/g, indicating its promising potential in adsorption application.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mesoporous Materials and Catalysis · Zeolite Catalysis and Synthesis · Clay minerals and soil interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (49)
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