Preparation of Cu/SBA-15 catalysts by different methods for the hydrogenolysis of dimethyl maleate to 1,4-butanediol

Chen, Liangfeng; Guo, Pingjun; Zhu, Lingjun; Qiao, Minghua; Shen, Wei; Xu, Hualong; Fan, Kangnian

doi:10.1016/j.apcata.2008.12.029

Cited by 121 publications

(40 citation statements)

References 31 publications

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“…Fourier transform infrared (FTIR) spectra was obtained over a range of 4000-400 cm 21 with a Nicolet Avatar 370 Tu et al 13 Carrero et al 14 Karvana and Atak€ ul 15 Habimana et al 16 Chen et al 8 Calles et al 17 Wang et al 18 Patel et al 19 Bardajee et al 20 Prathap et al 21 Sorolla et al 22 Zhang et al 23 This work CSI spectrometer (Thermo Electrom Corporation). The sample to be characterized was grounded using KBr pellet technique.…”

Section: Synthesis Of Catalyst and Its Characterizationmentioning

confidence: 98%

“…These mesoporous materials are regarded as excellent catalyst supports for active metallic particles due to their high surface area, uniform pore size and pore volume, and thermal stability. [8][9][10] Santa Barbara amorphous (SBA)-15 itself does not show substantial catalytic activity, unless appropriate active metal species are impregnated inside SBA-15.…”

Section: Introductionmentioning

confidence: 99%

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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: Synthesis Of Catalyst and Its Characterizationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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

2013

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“…The copper modified SBA-15 mesoporous molecular sieves have drawn much attention due to their excellent oxidation performance. Different prepared methods, such as direct synthesis [19,20], impregnation method [21] and grafting approach [22] have been reported. It has been shown that the highly dispersed metal species has a better activity than the crystalline phase MxOy for many oxidation reactions [23,24].…”

Section: Introductionmentioning

confidence: 99%

Catalytic wet peroxide oxidation of aniline in wastewater using copper modified SBA-15 as catalyst

Kong

Zhou

Yao

et al. 2015

Environmental Technology

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SBA-15 mesoporous molecular sieves modified with copper (Cu-SBA-15) were prepared by pH-adjusting hydrothermal method and characterized by X-ray diffraction, BET, transmission electron microscopy, UV-Vis and (29)Si MAS NMR. The pH of the synthesis gel has a significant effect on the amount and the dispersion of copper on SBA-15. The Cu-SBA-15(4.5) (where 4.5 denotes the pH value of the synthesis gel) modified with highly dispersed copper was used as catalyst for the oxidation of aniline by H2O2. The Cu-SBA-15(4.5) shows a higher catalytic activity compared to CuO on the surface of SBA-15. The influences of reaction conditions, such as initial pH of the aqueous solutions, temperature, as well as the dosages of H2O2 and catalyst were investigated. Under weakly alkaline aqueous solution conditions, the aniline conversion, the H2O2 decomposition and the total organic carbon (TOC) removal could be increased significantly compared to the acid conditions. The percentage of leaching Cu(2+) could be decreased from 45.0% to 3.66% when the initial pH of solution was increased from 5 to 10. The TOC removal could be enhanced with the increases of temperature, H2O2 and catalyst dosage, but the aniline conversion and H2O2 decomposition change slightly with further increasing dosage of catalyst and H2O2. At 343 K and pH 8.0, 100% aniline conversion and 66.9% TOC removal can be achieved under the conditions of 1.0 g/L catalyst and 0.05 mol/L H2O2 after 180 min. Although copper might be slightly leached from catalyst, the homogeneous Cu(2+) contribution to the whole catalytic activity is unimportant, and the highly dispersed copper on SBA-15 plays a dominant role.

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“…Ube Kosan of Japan launched a series of Cu/SiO 2 based catalysts for the oxalate hydrogenation of EG [20,21]. There are many papers reporting the texture, structure and catalytic performance of Cu/SiO 2 catalysts prepared by the deposition-precipitation method [22][23][24]. However, few have reported the influence of the copper particle distribution within the Cu/SiO 2 catalyst on the hydrogenation of oxalate to EG.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Copper Particle Dispersion in Cu/SiO2 Catalysts on the Hydrogenation Synthesis of Ethylene Glycol

et al. 2010

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Cu/SiO 2 catalysts were prepared by separate impregnation and deposition precipitation methods for the hydrogenation of dimethyl oxalate (DMO) to ethylene glycol (EG). XRD, TEM, H 2 -TPR, SEM, EDS and N 2 physisorption were performed to characterize the textural and structural properties of the catalysts. The results showed that Cu particles from the deposition precipitation preparation were homogeneously dispersed on the support and their sizes were found to be smaller than those from the impregnation method and the catalyst produced by the deposition precipitation method gave higher EG yields at lower reaction temperatures and lower H 2 /DMO mole ratio.

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Preparation of Cu/SBA-15 catalysts by different methods for the hydrogenolysis of dimethyl maleate to 1,4-butanediol

Cited by 121 publications

References 31 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

Catalytic wet peroxide oxidation of aniline in wastewater using copper modified SBA-15 as catalyst

The Influence of Copper Particle Dispersion in Cu/SiO2 Catalysts on the Hydrogenation Synthesis of Ethylene Glycol

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