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

Zhu, Yingying; Wang, Shurong; Zhu, Lingjun; Ge, Xiaolan; Li, Xinbao; Luo, Zhongyang

doi:10.1007/s10562-010-0298-z

Cited by 75 publications

(58 citation statements)

References 23 publications

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“…The catalysts used in this work were synthesized by the ion exchange method as follows, which is similar to the deposition precipitation (DP) method [35,36] or ammonia evaporation (AE) methods [37,38]. First, the ammonium-type ZSM-5 was calcined at 550°C for 4 h to convert it to HZSM-5.…”

Section: Catalyst Preparationmentioning

confidence: 99%

Conversion of 2,3-butanediol to butenes over bifunctional catalysts in a single reactor

Zheng

Wales

Heidlage

et al. 2015

Journal of Catalysis

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Section: Catalyst Preparationmentioning

confidence: 99%

Conversion of 2,3-butanediol to butenes over bifunctional catalysts in a single reactor

Zheng

Wales

Heidlage

et al. 2015

Journal of Catalysis

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“…Unfortunately, even at nickel loading below 10 wt %, the use of conventional impregnation could result in the appearance of intense NiO XRD reflections after calcination, indicating the formation of large NiO particles [1,5]. Based on pioneering research work [1,[9][10][11][12][13], we have disclosed one simple and practical co-impregnation method using…”

Section: Introductionmentioning

confidence: 99%

Efficient Hydrogenolysis of Guaiacol over Highly Dispersed Ni/MCM-41 Catalyst Combined with HZSM-5

Qiu

Weng

et al. 2016

Catalysts

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Abstract:A series of MCM-41 supported Ni catalysts with high metal dispersion was successfully synthesized by simple co-impregnation using proper ethylene glycol (EG). The acquired Ni-based catalysts performed the outstanding hydrogenolysis activity of guaiacol. The effects of the synthesis parameters including drying temperature, calcination temperature, and metal loading on the physical properties of NiO nanoparticles were investigated through the use of X-ray diffraction (XRD). The drying temperature was found to significantly influence the particle sizes of NiO supported on MCM-41, but the calcination temperature and metal loading had less influence. Interestingly, the small particle size (≤3.3 nm) and the high dispersion of NiO particles were also obtained for co-impregnation on the mixed support (MCM-41:HZSM-5 = 1:1), similar to that on the single MCM-41 support, leading to excellent hydrogenation activity at low temperature. The guaiacol conversion could reach 97.9% at 150 • C, and the catalytic activity was comparative with that of noble metal catalysts. The hydrodeoxygenation (HDO) performance was also promoted by the introduction of acidic HZSM-5 zeolite and an 84.1% yield of cyclohexane at 240 • C was achieved. These findings demonstrate potential applications for the future in promoting and improving industrial catalyst performance.

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“…However, the stability of the catalyst remains to be improved. Several factors, including metal dispersion, Cu 0 /Cu + ratio, metal-support interaction, active-component sintering and carbon deposition, affect the stability of the catalyst [4][5][6][7][8]. Given the difficulty of improving the stability with a single copper catalyst, copper is modified by a second additive (Cr, Ni, B, Zn, Cu, Ag, Co and La), which favours catalytic stability in several recent studies [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Promotive Effect of Sn2+ on Cu0/Cu+ Ratio and Stability Evolution of Cu/SiO2 Catalyst in the Hydrogenation of Dimethyl Oxalate

2017

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Abstract:The influence of Sn 2+ doping on the structure and performance of silica supported copper catalyst was systematically investigated and characterised. Catalytic evaluation showed that the suitable content of Sn 2+ introduced into a Cu/SiO 2 catalyst evidently improved the catalytic activity and stability of ethylene glycol synthesis from dimethyl oxalate. X-ray diffraction and X-ray auger electron spectroscopy indicated that the Cu 0 /Cu + ratio gradually increased with increasing Sn 2+ content, and an appropriate proportion of Cu 0 /Cu + ratio played a very significant role in this reaction. Transmission electron microscopy revealed that the active copper particles in the Cu-xSn/SiO 2 catalyst were smaller than those of the Cu/SiO 2 catalyst. This result may be due to the introduction of Sn 2+ species transformed into SnO 2 . Furthermore, SnO 2 effectively segregated the active copper. These effects are beneficial in inhibiting the aggregation of copper in the catalysts, thereby improving the stability of the catalyst and prolonging the life span.

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

Cited by 75 publications

References 23 publications

Conversion of 2,3-butanediol to butenes over bifunctional catalysts in a single reactor

Conversion of 2,3-butanediol to butenes over bifunctional catalysts in a single reactor

Efficient Hydrogenolysis of Guaiacol over Highly Dispersed Ni/MCM-41 Catalyst Combined with HZSM-5

Promotive Effect of Sn2+ on Cu0/Cu+ Ratio and Stability Evolution of Cu/SiO2 Catalyst in the Hydrogenation of Dimethyl Oxalate

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