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Titanium-Doped Solid Core-Mesoporous Shell Silica Particles: Synthesis and Catalytic Properties in Selective Oxidation reactions Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Catalysis Letters
ISSN: 1011-372X , E-ISSN: 1572-879X
Output data Year: 2009, Volume: 127, Number: 1-2, Pages: 75-82 Pages count : 8 DOI: 10.1007/s10562-008-9632-0
Tags Core-shell structure, H2O2, Monodisperse silica particles, Selective oxidation, Site-isolated Ti centers
Authors Barmatova Marina V. 1 , Ivanchikova Irina D. 1 , Kholdeeva Oxana A. 1 , Shmakov Alexander N. 1 , Zaikovskii Vladimir I. 1 , Melʹgunov Maxim S. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS

Funding (2)

1 Russian Foundation for Basic Research 05-03-34760
2 Russian Foundation for Basic Research 06-03-08102

Abstract: Near monodisperse spherical particles composed of a nonporous silica core covered by a Ti-doped hexagonally arranged mesoporous silica shell, Ti-SCMS, as well as spherical submicron-size particles of Ti-MCM-41, have been synthesized for the first time and characterized by elemental analysis, N2 adsorption, XRD, TEM and DR-UV spectroscopy. The mesoporous Ti,Si-shell has a thickness of about 45 nm and incorporates isolated Ti centers in tetrahedral coordination. Catalytic properties of Ti-SCMS and Ti-MCM-41 have been studied in selective oxidation of three representative bulky organic substrates, 2,3,6-trimethylphenol, methyl phenyl sulfide and caryophyllene, with aqueous H2O2 in MeCN medium. Ti-SCMS appeared to be more active and selective in the H2O2-based selective oxidation reactions compared to Ti-MCM-41, thus demonstrating an advantage of conducting a catalytic process in a thin mesoporous Ti,Si-shell.
Cite: Barmatova M.V. , Ivanchikova I.D. , Kholdeeva O.A. , Shmakov A.N. , Zaikovskii V.I. , Melʹgunov M.S.
Titanium-Doped Solid Core-Mesoporous Shell Silica Particles: Synthesis and Catalytic Properties in Selective Oxidation reactions
Catalysis Letters. 2009. V.127. N1-2. P.75-82. DOI: 10.1007/s10562-008-9632-0 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Jul 2, 2008
Accepted: Aug 27, 2008
Published online: Oct 11, 2008
Published print: Jan 1, 2009
Identifiers:
publication_identifier.wos_identifier_type WOS:000261786400013
publication_identifier.scopus_identifier_type 2-s2.0-57649195264
publication_identifier.rinz_identifier_type 13614425
publication_identifier.accession_number_identifier_type 2008:1389951
publication_identifier.chemical_accession_number_identifier_type 150:121289
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