Anchoring of copper complex in MCM-41 matrix:: A highly efficient catalyst for epoxidation of olefins by tert-BuOOH

被引：160

作者：

Jana, Sreyashi ^{[1
]}

Dutta, Buddhadeb ^{[1
]}

Bera, Rajesh ^{[1
]}

Koner, Subratanath ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Chem, Kolkata 700032, W Bengal, India

来源：

LANGMUIR | 2007年 / 23卷 / 05期

关键词：

D O I：

10.1021/la062409t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A complex moiety containing copper (II) has been anchored covalently into the organic-modified Si-MCM-41 to prepare a new catalyst. The amine group containing organic moiety 3-aminopropyl-triethoxysilane has been first anchored on the surface of Si-MCM-41 via silicon alkoxide route. The amine group upon condensation with salicyldehyde affords a bidentate ligand in the mesoporous matrix for anchoring copper(II) ions. The prepared catalyst has been characterized by UV-vis, electron paramagnetic resonance (EPR), and infrared (IR) spectroscopic analysis, small-angle X-ray diffraction, and N-2 sorption study. A remarkable difference in the pore structure has been observed after the immobilization of copper(II) complex in Si-MCM-41. The catalyst showed excellent catalytic efficiency in epoxidation reactions with various olefinic compounds including styrene and allyl alcohol, using tert-BuOOH as oxidant. Notably, styrene shows unprecedented high conversion (97%) as well as epoxide selectivity (89%) with tert-BuOOH over the Cu-MCM-41 catalyst.

引用

页码：2492 / 2496

页数：5

共 48 条

[1] Modelling the active sites of heterogeneous titanium epoxidation catalysts using titanium silasequioxanes: Insight into specific factors that determine leaching in liquid-phase processes [J].

Abbenhuis, HCL ;

Krijnen, S ;

vanSanten, RA .

CHEMICAL COMMUNICATIONS, 1997, (03) :331-332

[2] OXIDATION OF ALKANES CATALYZED BY ZEOLITE-ENCAPSULATED PERFLUORINATED RUTHENIUM PHTHALOCYANINES [J].

BALKUS, KJ ;

EISSA, M ;

LEVADO, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (43) :10753-10754

[3] RUTHENIUM-CATALYZED EPOXIDATIONS - MECHANISTIC AND SYNTHETIC ASPECTS [J].

BARF, GA ;

SHELDON, RA .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1995, 102 (01) :23-39

[4] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].

BECK, JS ;

VARTULI, JC ;

ROTH, WJ ;

LEONOWICZ, ME ;

KRESGE, CT ;

SCHMITT, KD ;

CHU, CTW ;

OLSON, DH ;

SHEPPARD, EW ;

MCCULLEN, SB ;

HIGGINS, JB ;

SCHLENKER, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) :10834-10843

[5] ZEOLITE-ENCAPSULATED AND CLAY-INTERCALATED METAL PORPHYRIN, PHTHALOCYANINE AND SCHIFF-BASE COMPLEXES AS MODELS FOR BIOMIMETIC OXIDATION CATALYSTS - AN OVERVIEW [J].

BEDIOUI, F .

COORDINATION CHEMISTRY REVIEWS, 1995, 144 :39-68

[6] EFFECTS ON MOLECULAR ASSOCIATION, CHELATE CONFORMATION, AND REACTIVITY TOWARD SUBSTITUTION IN CU(5-X-SALEN) COMPLEXES, SALEN2- = N,N'-ETHYLENEBIS(SALICYLIDENAMINATO), X = H, CH3O, AND CL - SYNTHESIS, X-RAY STRUCTURES, AND EPR INVESTIGATIONS [J].

BHADBHADE, MM ;

SRINIVAS, D .

INORGANIC CHEMISTRY, 1993, 32 (24) :5458-5466

[7] Transition-metal complexes for liquid-phase catalytic oxidation:: some aspects of industrial reactions and of emerging technologies [J].

Brégeault, JM .

DALTON TRANSACTIONS, 2003, (17) :3289-3302

[8] Synthesis of hybrid inorganic-organic mesoporous silica by co-condensation of siloxane and organosiloxane precursors [J].

Burkett, SL ;

Sims, SD ;

Mann, S .

CHEMICAL COMMUNICATIONS, 1996, (11) :1367-1368

[9] SYNTHESIS OF AN ULTRALARGE PORE TITANIUM SILICATE ISOMORPHOUS TO MCM-41 AND ITS APPLICATION AS A CATALYST FOR SELECTIVE OXIDATION OF HYDROCARBONS [J].

CORMA, A ;

NAVARRO, MT ;

PARIENTE, JP .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (02) :147-148

[10] Improvement of hydrothermal stability of MCM-41 mesoporous molecular sieve [J].

Das, D ;

Tsai, CM ;

Cheng, SF .

CHEMICAL COMMUNICATIONS, 1999, (05) :473-474

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