Titanium-Silica Catalyst Derived from Defined Metallic Titanium Cluster Precursor: Synthesis and Catalytic Properties in Selective Oxidations Full article
Journal |
Inorganica Chimica Acta
ISSN: 0020-1693 , E-ISSN: 1873-3255 |
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Output data | Year: 2018, Volume: 470, Pages: 393-401 Pages count : 9 DOI: 10.1016/j.ica.2017.06.059 | ||||||||
Tags | Alkene epoxidation, Heterogeneous catalysis, Mesoporous silica, Oxidative carboxylation, Titanium clusters | ||||||||
Authors |
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Affiliations |
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Funding (3)
1 | Russian Foundation for Basic Research | 15-33-20225 |
2 | Federal Agency for Scientific Organizations | 0303-2016-0005 |
3 | The Ministry of Education and Science of the Russian Federation |
Abstract:
A class of titanium-grafted mesoporous silica catalysts has been designed and prepared starting from molecularly defined metal clusters. The organosol mixture of zerovalent Ti13 clusters was impregnated onto the surface of ordered mesoporous silica molecular sieves (MCM-41 and MMM-2) and, after high-temperature calcination, an evenly dispersed non-single-site Ti(IV)nOx-like silica-supported catalyst was obtained. The catalytic solids, fully characterized by microscopic, spectroscopic and porosimetric techniques, showed standard performance in the liquid-phase epoxidation of a cyclic alkene, as limonene, but remarkably high selectivity values in the oxidative carboxylation of styrene, with tert-butylhydroperoxide and carbon dioxide in the presence of tetrabutylammonium bromide as a cocatalyst. Unprecedented high yields, up to 67%, in styrene carbonate were achieved after 24 h, under solvent-free conditions. The catalysts displayed also a noteworthy stability of the performance to repeated recovery and reuse cycles.
Cite:
Evangelisti C.
, Guidotti M.
, Tiozzo C.
, Psaro R.
, Maksimchuk N.
, Ivanchikova I.
, Shmakov A.N.
, Kholdeeva O.
Titanium-Silica Catalyst Derived from Defined Metallic Titanium Cluster Precursor: Synthesis and Catalytic Properties in Selective Oxidations
Inorganica Chimica Acta. 2018. V.470. P.393-401. DOI: 10.1016/j.ica.2017.06.059 WOS Scopus РИНЦ AN OpenAlex
Titanium-Silica Catalyst Derived from Defined Metallic Titanium Cluster Precursor: Synthesis and Catalytic Properties in Selective Oxidations
Inorganica Chimica Acta. 2018. V.470. P.393-401. DOI: 10.1016/j.ica.2017.06.059 WOS Scopus РИНЦ AN OpenAlex
Dates:
Submitted: | Apr 21, 2017 |
Accepted: | Jun 27, 2017 |
Published online: | Jul 5, 2017 |
Published print: | Jan 1, 2018 |
Identifiers:
Web of science: | WOS:000416060300049 |
Scopus: | 2-s2.0-85024501978 |
Elibrary: | 31048879 |
Chemical Abstracts: | 2017:1192211 |
OpenAlex: | W2733787725 |