TY - JOUR
T1 - Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
AU - Wong, Siew Fang
AU - Deekomwong, Krittanun
AU - Wittayakun, Jatuporn
AU - Ling, Tau Chuan
AU - Muraza, Oki
AU - Adam, Farook
AU - Ng, Eng Poh
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - An investigation of nanosized potassium aluminosilicate F-type zeolite (K-F, structure code EDI) converted from rice husk ash (RHA) is reported. The crystallization process was studied in an organic template-free system under microwave radiation at 100 °C and the evolution was followed by spectroscopy and microscopy techniques. The study indicated that the crystallization rate of K-F zeolite was significantly enhanced using microwave radiation. The zeolite started to nucleate at 0.5 min and flattened cuboid shaped K-F zeolite crystals (ca. 39 nm, Si/Al = 1.26) were formed after 2 min onwards. The nanocrystalline K-F zeolite exhibited good catalytic performance in solvent-free Aldol condensation reaction between benzaldehyde and heptanal, with ca. 75% reactant conversion and ca. 67% jasminaldehyde selectivity even after fifth cycle of reaction.
AB - An investigation of nanosized potassium aluminosilicate F-type zeolite (K-F, structure code EDI) converted from rice husk ash (RHA) is reported. The crystallization process was studied in an organic template-free system under microwave radiation at 100 °C and the evolution was followed by spectroscopy and microscopy techniques. The study indicated that the crystallization rate of K-F zeolite was significantly enhanced using microwave radiation. The zeolite started to nucleate at 0.5 min and flattened cuboid shaped K-F zeolite crystals (ca. 39 nm, Si/Al = 1.26) were formed after 2 min onwards. The nanocrystalline K-F zeolite exhibited good catalytic performance in solvent-free Aldol condensation reaction between benzaldehyde and heptanal, with ca. 75% reactant conversion and ca. 67% jasminaldehyde selectivity even after fifth cycle of reaction.
KW - Base catalyst
KW - K-F, Nanozeolite
KW - Microwave synthesis
KW - Template-free synthesis
UR - http://www.scopus.com/inward/record.url?scp=85019756484&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2017.04.061
DO - 10.1016/j.matchemphys.2017.04.061
M3 - Article
AN - SCOPUS:85019756484
SN - 0254-0584
VL - 196
SP - 295
EP - 301
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
ER -