Synthesis and Catalytic Performance of Aluminium‐containing Mesoporous, Spherical Silica Particles

A one‐pot synthesis of aluminium‐containing mesoporous silica particles (Al‐MSPs) utilizing polyvinyl alcohol (PVA) as steric stabilization agent is reported. PVA prevents particle agglomeration even when the ionic aluminium source is present in the synthesis mixture. Silicon and aluminium sources w...

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Published inChemie ingenieur technik Vol. 93; no. 6; pp. 1001 - 1010
Main Authors Weissenberger, Tobias, Machoke, Albert G. F., Kolle, Joel M., Avadhut, Yamini S., Hartmann, Martin, Schwieger, Wilhelm
Format Journal Article
LanguageEnglish
Published 01.06.2021
Subjects
Alumina
Beckmann rearrangement
Mesoporous particles
Silica
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Summary:A one‐pot synthesis of aluminium‐containing mesoporous silica particles (Al‐MSPs) utilizing polyvinyl alcohol (PVA) as steric stabilization agent is reported. PVA prevents particle agglomeration even when the ionic aluminium source is present in the synthesis mixture. Silicon and aluminium sources were utilised completely, resulting in high yield and easy adjustment of the Si/Al ratio. The Al‐MSPs showed a spherical morphology, high surface area and were active for the liquid‐phase Beckmann rearrangement of cyclohexanone to caprolactam. Polyvinyl alcohol was successfully utilized as steric stabilisation agent for the synthesis of aluminium‐containing mesoporous silica particles (Al‐MSPs). The synthesized Al‐MSPs were characterized and tested as catalysts for the liquid‐phase Beckmann rearrangement of cyclohexanone to caprolactam.
Bibliography:In Memory of Prof. Dr.‐Ing. Jens Weitkamp
ISSN:0009-286X
1522-2640
DOI:10.1002/cite.202000183