Competitive oxidation of 1- and 2-propanol catalyzed by titanium silicalite-1 and the application for selective oxidation of 1-methoxy-2-propanol to 1-methoxy-2-propanone

Hayashi, Hiromu; Kikawa, K.; Murai, Yoichi; Shigemoto, Naoya; Sugiyama, Shigeru; Kawashioro, K.

doi:10.1007/bf00807212

Cited by 18 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is well known that the addition of H 2 O 2 to titanium silicates produces a titanium peroxo complex 6 and it has been proposed 42,43 that the initial mechanistic step of the oxidation sequence with H 2 O 2 involves hydrolysis of the Ti-O-Si bond to yield a silanol function and a hydroperoxytitanium(IV) function (eqn. (10)), which subsequently leads to the formation of water and a Ti(IV)(Z 2 -O 2 ) peroxo complex (eqn.…”

Section: Formation Of Oxygen Radicals On H 2 O 2 -Treated Ts-1mentioning

confidence: 99%

The interaction of H2O2 with exchanged titanium oxide systems (TS-1, TiO2, [Ti]-APO-5, Ti-ZSM-5)Electronic supplementary information (ESI) available: XRD patterns and further EPR spectra. See http://www.rsc.org/suppdata/cp/b3/b306398b/

Antcliff

Murphy

Griffiths

et al. 2003

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

The interaction of hydrogen peroxide with a range of polycrystalline titanium oxide systems, including TiO 2 , TS-1, [Ti]-APO-5 and ion-exchanged Ti-ZSM-5, has been investigated using c.w. X-band EPR spectroscopy. Decomposition of the peroxide occurs immediately upon contact with all of the metal oxides investigated, resulting in the formation of a series of paramagnetic oxygen centred radicals. In the TiO 2 /H 2 O 2 system, intense signals assigned to adsorbed O 2 À anions were observed. Traces of physisorbed water was found to retard the motional characteritics of the adsorbed O 2 À anion, as manifested in the variable-temperature EPR spectra. In addition, covalently bound superoxo species were also identified on the TiO 2 /H 2 O 2 surface. In the TS-1/H 2 O 2 system, two different bound peroxo radicals were observed and identified firstly as (1) Ti(OSi) 4 /O 2 À /H 2 O or Ti(OSi) 4 /OO /H 2 O and secondly (2) as HOTi(OSi) 3 /OO /H 2 O. In both cases, the adsorbed radical interacts with an adjacent water molecule, while the two models differ by the presence or absence of a titanol function. An EPR signal of the weakly adsorbed hyperperoxy radicals (HO 2 ) was also observed in H 2 O 2 -treated TS-1. In the [Ti]-APO-5/H 2 O 2 and Ti-ZSM5/H 2 O 2 systems bound peroxo radicals are observed in both cases, but broader EPR resonances are observed in the latter case over ZSM5 due to the heterogeneity of extraframework Ti 4+ adsorption sites for stabilisation of the radical anions.y Electronic supplementary information (ESI) available: XRD patterns and further EPR spectra. See

show abstract

Section: Formation Of Oxygen Radicals On H 2 O 2 -Treated Ts-1mentioning

confidence: 99%

The interaction of H2O2 with exchanged titanium oxide systems (TS-1, TiO2, [Ti]-APO-5, Ti-ZSM-5)Electronic supplementary information (ESI) available: XRD patterns and further EPR spectra. See http://www.rsc.org/suppdata/cp/b3/b306398b/

Antcliff

Murphy

Griffiths

et al. 2003

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…Comparison of the yields of acetone or propionaldehyde for a given support, especially those with the highest activity, demonstrate that 2-propanol is more easily oxidized by this catalytic system. Several previous studies have found the same trend between the selective oxidation of 1-propanol and 2-propanol with hydrogen peroxide and attribute it to the weaker C–H bond on the α carbon in 2-propanol. − …”

mentioning

confidence: 61%

Dilute Pd/Au Alloys Replace Au/TiO₂ Interface for Selective Oxidation Reactions

et al. 2020

View full text Add to dashboard Cite

The tandem nature of selective alcohol oxidation with in situ-generated oxidants over Au/metal oxide catalysts is demonstrated. Colloidal synthesis is used to show that while Au nanoparticles require an oxide interface to generate the selective oxidant from a mixture of hydrogen and oxygen, dilute Pd/Au alloy nanoparticles are able to generate oxidants even when immobilized on inert carbon supports because of the hydrogen dissociation ability of Pd single atoms in Au. These oxidants may travel through the gas phase to be utilized by a variety of metal oxides to selectively oxidize primary and secondary alcohols to their respective carbonyls.

show abstract

“…It was noted that the catalytic system could be utilized for oxidation of secondary cyclic alcohols such as cyclohexanol and cyclooctanol, which are relatively inactive toward oxidation, to corresponding ketones (entries 10-11). Oxidation of a series of aliphatic alcohols has been widely examined using microporous titanosilicalites such as TS-1 [9][10][11].…”

Section: Catalytic Properties For Oxidation Of Various Hydrophobic Almentioning

confidence: 99%

“…In this paper, we describe the catalytic properties of a titanium oxide-loaded SiO 2 -based phase-boundary 3 catalyst for oxidation of various hydrophobic alcohols using H 2 O 2 . We focus on oxidation of relatively bulky alcohols that are difficult to use for well-known titanium-containing microporous materials such as titanium silicalite, TS-1, and related materials [9][10][11][12] because of their limitation of pore size.…”

Section: Introductionmentioning

confidence: 99%

Oxidation of hydrophobic alcohols using aqueous hydrogen peroxide over amphiphilic silica particles loaded with titanium(IV) oxide as a liquid–liquid phase-boundary catalyst

Choi¹,

Ikeda²,

Ishino³

et al. 2005

Applied Catalysis A: General

View full text Add to dashboard Cite

Competitive oxidation of 1- and 2-propanol catalyzed by titanium silicalite-1 and the application for selective oxidation of 1-methoxy-2-propanol to 1-methoxy-2-propanone

Cited by 18 publications

References 8 publications

The interaction of H2O2 with exchanged titanium oxide systems (TS-1, TiO2, [Ti]-APO-5, Ti-ZSM-5)Electronic supplementary information (ESI) available: XRD patterns and further EPR spectra. See http://www.rsc.org/suppdata/cp/b3/b306398b/

The interaction of H2O2 with exchanged titanium oxide systems (TS-1, TiO2, [Ti]-APO-5, Ti-ZSM-5)Electronic supplementary information (ESI) available: XRD patterns and further EPR spectra. See http://www.rsc.org/suppdata/cp/b3/b306398b/

Dilute Pd/Au Alloys Replace Au/TiO₂ Interface for Selective Oxidation Reactions

Oxidation of hydrophobic alcohols using aqueous hydrogen peroxide over amphiphilic silica particles loaded with titanium(IV) oxide as a liquid–liquid phase-boundary catalyst

Contact Info

Product

Resources

About

Competitive oxidation of 1- and 2-propanol catalyzed by titanium silicalite-1 and the application for selective oxidation of 1-methoxy-2-propanol to 1-methoxy-2-propanone

Cited by 18 publications

References 8 publications

The interaction of H2O2 with exchanged titanium oxide systems (TS-1, TiO2, [Ti]-APO-5, Ti-ZSM-5)Electronic supplementary information (ESI) available: XRD patterns and further EPR spectra. See http://www.rsc.org/suppdata/cp/b3/b306398b/

The interaction of H2O2 with exchanged titanium oxide systems (TS-1, TiO2, [Ti]-APO-5, Ti-ZSM-5)Electronic supplementary information (ESI) available: XRD patterns and further EPR spectra. See http://www.rsc.org/suppdata/cp/b3/b306398b/

Dilute Pd/Au Alloys Replace Au/TiO2 Interface for Selective Oxidation Reactions

Oxidation of hydrophobic alcohols using aqueous hydrogen peroxide over amphiphilic silica particles loaded with titanium(IV) oxide as a liquid–liquid phase-boundary catalyst

Contact Info

Product

Resources

About

Dilute Pd/Au Alloys Replace Au/TiO₂ Interface for Selective Oxidation Reactions