H₅PW₁₀V₂O₄₀/pyridino-SBA-15 as a highly recyclable, robust and efficient inorganic–organic hybrid material for the catalytic preparation of bis(indolyl)methanes
2013
Tayebee, Reza | Amini, Mostafa M. | Nehzat, Farzaneh | Sadeghi, Omid | Armaghan, Mahsa
A highly well-organized heterogeneous protocol is developed for the simple synthesis of bis(indolyl)methanes by the effective mediation of an inorganic–organic hybrid material prepared by the chemically anchoring of H₅PW₁₀V₂O₄₀ onto mesoporous silica (SBA-15). Standard characterization data such as XRD, SEM, and FT-IR for the obtained catalyst verified that the ordered hexagonal mesoporous structure of SBA-15 and the Keggin structure of tungstovanadophosphoricacid on pyridine modified SBA-15 surface are preserved. Reusability experiments demonstrated that the active sites on the pyridine modified SBA-15 mesoporous silica retained their structure after several cycles.
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