Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 362, Issue 1, Pages 157-163Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.06.008
Keywords
Molybdenum; 8-Quinolinol; Periodic mesoporous organosilicas (PMOs); Cyclooctene epoxidation
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Funding
- National Basic Research Program of China [2004CB217804]
- National Natural Science Foundation of China [20673046]
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Novel periodic mesostructured organometallic silicas of MCM-41 type bearing homogeneously distributed bis(8-quinolinolato)dioxomolybdenum(VI) inside the channel walls (denoted as MoO(2)Q(2)@PMO-x) are synthesized via a convenient one-pot method and examined as catalysts in the epoxidation of cyclooctene. The ordered mesoporous structures as well as the organometallic groups incorporated into the framework are fully determined by comprehensive characterization techniques such as XRD, TEM, N(2) adsorption/desorption, SEM, FT-IR, UV-vis spectroscopy, solid-state NMR, ICP-AES, XPS and TG/DSC. MoO(2)Q(2)@PMO-6% catalyst exhibits higher activity for the epoxidation of cyclooctene with tert-butyl hydroperoxide than other MoO(2)Q(2)@PMO materials and its homogeneous or randomly grafted analogue. (C) 2011 Elsevier Inc. All rights reserved.
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