Direct synthesis, characterization of Cu-SBA-15 and its high catalytic activity in hydroxylation of phenol by H2O2

Wang, Lingping; Kong, Aiguo; Chen, Bo; Ding, Hanming; Shan, Yongkui; He, Min

doi:10.1016/j.molcata.2004.12.027

Cited by 118 publications

(63 citation statements)

References 33 publications

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“…42 The active phase of transition metal ion reacts with H 2 O 2 , via reactions 4-6, leading to formation of peroxy radical (HO 2 2 ) and hydroxyl radical (HO • ) which have high oxidation potential. 11 However, excess amount of active phase of copper on the catalyst also converts peroxy radical (HO 2 2 ) to nascent oxygen by reaction 7. In addition, in presence of an excess amount of H 2 O 2 , HO…”

Section: Reaction Mechanism Of Pyridine Oxidationmentioning

confidence: 99%

Catalytic Activity of Cu/SBA‐15 for Peroxidation of Pyridine Bearing Wastewater at Atmospheric Condition

2013

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In this study, Cu-loaded Santa Barbara amorphous (SBA)-15 catalysts were synthesized by impregnation method and further used for catalytic wet peroxidation (CWPO) of pyridine from aqueous solution using hydrogen peroxide as oxidant. The synthesized catalysts have been characterized by Brunauer-Emmett-Teller surface area: temperature-programmed reduction, H 2 -chemisorption, Fourier transform infrared spectroscopy, and field emission scanning electron microscopy. Characterization results indicate good dispersion of Cu species inside the porous structure of SBA-15. The effect of various parameters such as Cu loading on SBA-15, pH, catalyst dose, H 2 O 2 concentration, and temperature have been studied for their effect on CWPO of pyridine. More than 97% pyridine removal and 92% total organic carbon removal was achieved at optimum condition. Cu/SBA-15 showed stable performance during reuse for six cycles with negligible copper leaching.

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Section: Reaction Mechanism Of Pyridine Oxidationmentioning

confidence: 99%

Catalytic Activity of Cu/SBA‐15 for Peroxidation of Pyridine Bearing Wastewater at Atmospheric Condition

2013

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“…To date, copper-containing mesoporous molecular sieves (Cu-MMS) such as Cu-MCM-41 [15], Cu-TUD-1 [14] and Cu-SBA-15 [16] have been successfully synthesized and show efficient catalytic performance in liquid phase oxidation of aromatic compounds. Copper substituted SBA-15 mesoporous silica (Cu-SBA-15) catalyst was successfully synthesized using triblock copolymers surfactant as template agent under acidic condition by Wang et.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Synthesis and Characterization of Cu-SBA-16 Mesoporous Molecular Sieves as an Excellent Catalyst for Phenol Hydroxylation

et al. 2010

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“…Copper oxide has been extensively studied as an important component of CuO superconductors because of being a p-type semiconductor. With regard to its commercial value and semiconductor properties, CuO has also been widely exploited as a powerful heterogenous catalyst [6][7][8][9][10][11][12][13][14][15], photocatalyst [16][17][18][19][20], magnetic storage medium, solar energy transformer and gas sensor [21,22]. Therefore, the synthesis of CuO-loaded mesoporous titanium dioxide nanocrystalline seems to be valuable for heterogenous photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

A credible role of copper oxide on structure of nanocrystalline mesoporous titanium dioxide

Rahimnejad

Setayesh

Gholami

2008

JICS

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Copper oxide-titania catalysts with nanocrystalline mesoporous structure were prepared by sol-gel technique using tetra isopropyl ortho titanate (TiPT) as the inorganic precursor and amino-2 ethanol as the swelling agent. Characterization was performed using X-ray diffraction (XRD), fourier transformed infrared spectra (FTIR), scanning electron microscopy (SEM), diffuse reflectance UV-Vis spectroscopy (DRS), and N 2 adsorption-desorption measurements. It was found that CuO (0.025-0.1 mol ratio) has some effect on the particle size, surface area, pore-volume, pore-diameter, crystallinity of the particles, and crystalline phase of TiO 2 nanocrystalline. The results indicated that 0.1 CuO-TiO 2 had higher surface area and total pore volume among all CuO-TiO 2 samples. The S BET value of 0.1 mol ratio CuO-load TiO 2 sample is approximately similar to that of Degussa P25 while its pore volume (0.1198 cm 3 g -1 ) is larger than Degussa P25 due to production of large number of pores. Therefore, the physical property of 0.1 CuO-TiO 2 catalyst is comparable with Degussa P25.At 823K, the 0.1 mol ratio CuO-load TiO 2 sample shows the phase transformation from anatase to rutile in the ratio of 1:1.1. The synthesized CuO-TiO 2 nanocrystalline will be able to show photocatalytic reaction under visible light.

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Direct synthesis, characterization of Cu-SBA-15 and its high catalytic activity in hydroxylation of phenol by H2O2

Cited by 118 publications

References 33 publications

Catalytic Activity of Cu/SBA‐15 for Peroxidation of Pyridine Bearing Wastewater at Atmospheric Condition

Catalytic Activity of Cu/SBA‐15 for Peroxidation of Pyridine Bearing Wastewater at Atmospheric Condition

One-Pot Synthesis and Characterization of Cu-SBA-16 Mesoporous Molecular Sieves as an Excellent Catalyst for Phenol Hydroxylation

A credible role of copper oxide on structure of nanocrystalline mesoporous titanium dioxide

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