Glycerolysis of Lauric Acid with Strontium Enhanced 12-Tungstophosphoric Acid Incorporated SBA-15: Material Characterization and Reusability Elucidation

SBA-15 was modified with strontium before being functionalized with HPW acid to investigate its performance and stability in the glycerolysis of lauric acid. The physical and chemical characteristics of the catalyst were analyzed using Fourier Transformed Infrared (FTIR), Scanning Electron Morpholog...

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Bibliographic Details
Published in:Key engineering materials 2022-08, Vol.930, p.97-104
Main Authors: Shuit, Siew Hoong, Ng, Qi Hwa, Samsun, Nur Syazwani, Abdullah, Ahmad Zuhairi, Siti Kartini, Enche Ab Rahim, Yong, Hoo Peng, Teoh, Yi Peng
Format: Article
Language:English
Subjects:
Acids
Catalysts
Catalytic activity
Catalytic converters
Chemical synthesis
Infrared analysis
Lauric acid
Stability analysis
Strontium oxides
Surface analysis (chemical)
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Summary:SBA-15 was modified with strontium before being functionalized with HPW acid to investigate its performance and stability in the glycerolysis of lauric acid. The physical and chemical characteristics of the catalyst were analyzed using Fourier Transformed Infrared (FTIR), Scanning Electron Morphology (SEM), BET surface analysis, Transmission Electron Microscopy (TEM), and X-ray Diffraction (XRD). The collective evidence and finding from material characterizations, including the successfully formed and retained SBA-15 mesopores after modification twice, SrO formation and disappearance, post-SrO modification and HPW incorporation, respectively, further strengthen the claim of the strong anchoring of HPW onto the SBA-15 via the strontium-salt bridge. The reusability of the lauric acid conversion was also evaluated. The superior stability of the synthesized catalyst (HPW/SrSBA-15) was demonstrated with minimal to no change in both lauric acid conversion (75.34%) and monolaurin yield (38.9%). Such a result was attributed to the good interaction between HPW and SBA-15 via strontium modification and proved that the catalyst does not undergo severe deactivation and showed good catalytic activity in recycled use.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/p-k8pd67