Effect of Si(IV) substitution on the stability of microporous ZnAPSO-44 solid acid catalysts: a combined XAS/XRD study.
The combined XAS/XRD technique has been used to investigate the stability of the microporous structure during calcination process for a series of ZnAPSO-44 materials. Incorporation of large amounts of Zn is found to produce materials that are unstable upon removal of the structure directing organic template molecule. However, simultaneous incorporation of Si is found to increase the thermal stability of the materials, yielding catalysts that are well suited for acid catalysed reactions.
Sankar
G
G
Davy Faraday Research Laboratory, The Royal Institution of Great Britain, London, UK. sankar@ri.ac.uk
Muncaster
G
G
Gleeson
D
D
Catlow
C R
CR
Thomas
J M
JM
Mosselmans
J F
JF
Harvey
I
I
Dent
A J
AJ