Characterization and catalytic properties of Sn-modified rapidly quenched skeletal Ni catalysts in aqueous-phase reforming of ethylene glycol

Xie, Fei; Chu, Xianwen; Hu, Huarong; Qiao, Minghua; Yan, Shaomin; Zhu, Yuanlong; He, Heyong; Fan, Kangnian; Li, Hexing; Zong, Baoning; Zhang, Xiaoxin

doi:10.1016/j.jcat.2006.05.001

Cited by 60 publications

(30 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ethylene glycol is an important industry feedstock which can be derived from sustainable biomass [64]. Many studies on APR process reported using ethylene glycol for its good hydrogen selectivity [6] [64]- [70].…”

Section: Ethylene Glycolmentioning

confidence: 99%

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

Wei¹,

Lei²,

Liu³

et al. 2014

JSBS

View full text Add to dashboard Cite

Aqueous phase reforming (APR) of biomass derived feedstock producing hydrogen was reviewed. The APR process was discussed based on different feedstock categories such as sugars, polyols and ethanol. The mechanism of APR was analyzed referring to different structures of feedstock. The reaction pathways of APR were investigated. The usage of catalysts should be judged by feedstock on the requirement including C-C bond cleavage, water-gas shift (WGS) reaction, and catalyst maintenance. The prospects were concluded based on the recent works from bimetallic catalysts and high efficient supports. Examples of significant challenges of reducing catalyst cost and increasing catalyst stability have been discussed. The modification and utilization of alkane selectivity of APR processes for liquid fuel production was also investigated.

show abstract

Section: Ethylene Glycolmentioning

confidence: 99%

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

Wei¹,

Lei²,

Liu³

et al. 2014

JSBS

View full text Add to dashboard Cite

show abstract

“…Unmodified RNi exhibited two hydrogen desorption peaks at ca. 370 and 640 K, which could be assigned to hydrogen chemisorbed on low-Miller index planes of Ni and defects, respectively [32]. The low temperature peak was slowly attenuated, while the high temperature peak was gradually intensified and shifted slightly to higher temperatures with increasing Ce/Ni ratio from 0 to 0.054.…”

Section: H 2 Temperature Programmed Desorption (H 2 -Tpd)mentioning

confidence: 95%

“…On the other hand, when large quantities of Ce were added, a combination of XRD, XPS and SEM showed that the catalyst surface was heavily covered by Ce. It was suggested that the active sites of Ni for CO adsorption and/or dissociation might be blocked by Ce, thus suppressing the undesired methanation reaction [17,32], and the decrease in methane selectivity and corresponding increase in hydrogen selectivity were obtained. The poison of the active sites for the undesired methanation reaction caused by Ce modification was similar to that induced by Sn modification as suggested in the literatures [17,32].…”

Section: Effect Of Cementioning

confidence: 99%

“…It was suggested that the active sites of Ni for CO adsorption and/or dissociation might be blocked by Ce, thus suppressing the undesired methanation reaction [17,32], and the decrease in methane selectivity and corresponding increase in hydrogen selectivity were obtained. The poison of the active sites for the undesired methanation reaction caused by Ce modification was similar to that induced by Sn modification as suggested in the literatures [17,32]. In addition, it was reported that the deposited Ce(OH) 3 was readily converted to CeO 2 under hydrothermal conditions similar to our APR reaction conditions [35], thus the increase in hydrogen selectivity was also likely to be attributed to the enhancement of desired water-gas shift reaction by Ce modification because of the reducible CeO 2 , which is a common promoter for water-gas shift reaction [36].…”

Section: Effect Of Cementioning

confidence: 99%

See 1 more Smart Citation

Preparation of Ce-modified Raney Ni Catalysts and Their Application in Aqueous-Phase Reforming of Cellulose

Wen

Wang

et al. 2011

Catal Lett

View full text Add to dashboard Cite

A series of Ce-modified Raney Ni (RNi) catalysts were successfully prepared by a simple wet chemical route and employed in aqueous-phase reforming of cellulose. Remarkable enhancement in hydrogen selectivity and yield after the Ce introduction was observed. At 533 K and autogenous pressure, a highest hydrogen yield of 17.8 mmol/g cellulose , which was comparable with that of 5 wt% Pt/AC, could be obtained over Ce-modified catalyst at a Ce:Ni ratio of 0.054. The catalysts were characterized by N 2 adsorption/desorption, XRD, SEM, XPS and H 2 -TPD. It was found that cerium existed at the surface of the catalyst as Ce(OH) 3 , and more defects were generated during Ce modification. Based on the characterization and catalytic performance, it was suggested that the deposited Ce(OH) 3 may transform into reducible CeO 2 under the reaction conditions, thus promoting the desired water-gas shift reaction, leading to more H 2 . On the other hand, the active sites for undesired methanation reaction may be effectively poisoned by Ce modification, thus leading to less undesired methane.

show abstract

“…Different types of catalysts were applied in the APR of ethylene glycol, including noble metal-based catalysts, such as Pt, Pd, Rh, Ru, and Ir (Liu et al, 2008;Skoplyak et al, 2009;Kim et al, 2011;, Sn modified Raney Ni , NiMgAl layered double hydroxide catalysts, Ni/Sn/Al hydrotalcite derived catalysts (Pan et al, 2012), rapidly quenched skeletal Ni (Xie et al, 2006), non-pyrophoric Ni catalysts (Zhu et al, 2008), and Co/ZnO catalysts (Chu et al, 2011).…”

Section: Aqueous-phase Reforming Of Ethylene Glycolmentioning

confidence: 99%

Progress in the aqueous-phase reforming of different biomass-derived alcohols for hydrogen production

Chen

et al. 2015

J. Zhejiang Univ. Sci. A

View full text Add to dashboard Cite

Hydrogen as a clean, efficient, and sustainable energy has attracted considerable attention in recent years. Hydrogen production from aqueous-phase reforming (APR) of biomass-derived alcohols is preferable to other methods because of its wide renewable resource, mild reaction conditions, and low processing cost. In this paper, the progress in the APR process of different biomass-derived alcohols for H 2 production is reviewed, and the reaction mechanisms are briefly discussed for different catalysts. Pt-based catalysts exhibit high H 2 selectivity but low conversion of the alcohols. Ni-based catalysts exhibit high activity and conversion but low H 2 selectivity and yield.

show abstract

Characterization and catalytic properties of Sn-modified rapidly quenched skeletal Ni catalysts in aqueous-phase reforming of ethylene glycol

Cited by 60 publications

References 34 publications

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

Preparation of Ce-modified Raney Ni Catalysts and Their Application in Aqueous-Phase Reforming of Cellulose

Progress in the aqueous-phase reforming of different biomass-derived alcohols for hydrogen production

Contact Info

Product

Resources

About