Highly active and stable alumina supported nickel nanoparticle catalysts for dry reforming of methane

Shang, Zeyu; Li, Shiguang; Li, Ling; Liu, Guozhu; Liu, Xinhua

doi:10.1016/j.apcatb.2016.08.019

Cited by 174 publications

(77 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The prepared catalysts showed high catalytic reactivity and exceptionally high stability towards DRM reaction performed in the range of 700 and 850 • C for 300 h (Figure 8) [85]. They also suggested that stronger bonding force between Ni nanoparticles and alumina supports was established for ALD-prepared sample than IW-prepared based on the larger size and lower catalytic performance of Ni nanoparticles that were prepared by IW method [86]. nanoparticles inside the pore structures of various supports.…”

Section: Enhancement Of Dispersion and Thermal Stability Of Ni Nanopamentioning

confidence: 92%

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Seo

2018

Catalysts

View full text Add to dashboard Cite

Two major green house gases (CO 2 and CH 4 ) can be converted into useful synthetic gas (H 2 and CO) during dry reforming of methane (DRM) reaction, and a lot of scientific efforts has been made to develop efficient catalysts for dry reforming of methane (DRM). Noble metal-based catalysts can effectively assist DRM reaction, however they are not economically viable. Alternatively, non-noble based catalysts have been studied so far, and supported Ni catalysts have been considered as a promising candidate for DRM catalyst. Main drawback of Ni catalysts is its catalytic instability under operating conditions of DRM (>700 • C). Recently, it has been demonstrated that the appropriate choice of metal-oxide supports can address this issue since the chemical and physical of metal-oxide supports can prevent coke formation and stabilize the small Ni nanoparticles under harsh conditions of DRM operation. This mini-review covers the recent scientific findings on the development of supported Ni catalysts for DRM reaction, including the synthetic methods of supported Ni nanoparticles with high sintering resistance.

show abstract

Section: Enhancement Of Dispersion and Thermal Stability Of Ni Nanopamentioning

confidence: 92%

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Seo

2018

Catalysts

View full text Add to dashboard Cite

show abstract

“…24 Typically, the NiAl 2 O 4 spinel can be formed by calcination of Ni/alumina samples at a relatively high temperature in the presence of oxygen. 11 Obviously, the synthesis of Ni nanoparticles using ALD technique would be different from that of some other conventional methods, such as the impregnation method. 17,25 In this study, however, NiAl 2 O 4 was formed in the as-deposited Ni/a-Al 2 O 3 -NPs by ALD.…”

Section: Characterization Of Ni Catalystmentioning

confidence: 99%

“…8,9 Therefore, alumina has been widely employed as a catalyst support for DRM reactions. 11 The formation of NiAl 2 O 4 spinel increased the thermal stability of the catalyst, and a partial reduction of the NiAl 2 O 4 spinel to metallic Ni under the reductive atmosphere in a DRM reaction at 8508C greatly increased the catalytic activity. Gould et al 10 deposited Ni nanoparticles ($3 nm) on nonporous c-Al 2 O 3 nanoparticles for a DRM reaction.…”

Section: Introductionmentioning

confidence: 99%

“…Atomic layer deposition (ALD), has been reported to prepare Ni nanoparticles for DRM reactions. 11 Though c-Al 2 O 3 was widely used as support for Ni-based catalysts, it was not suitable for the methane reforming process due to phase transformation at elevated temperatures. Our recent work revealed that the interaction between the alumina support and the ALD Ni nanoparticles was the key to the high activity and stability of ALD Ni nanoparticles for a DRM reaction.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nano‐engineered nickel catalysts supported on 4‐channel α‐Al₂O₃ hollow fibers for dry reforming of methane

Shang

Wang

et al. 2018

AIChE Journal

Self Cite

View full text Add to dashboard Cite

A nickel (Ni) nanoparticle catalyst, supported on 4‐channel α‐Al2O3 hollow fibers, was synthesized by atomic layer deposition (ALD). Highly dispersed Ni nanoparticles were successfully deposited on the outside surfaces and the inside porous structures of hollow fibers. The catalyst was employed to catalyze the dry reforming of methane (DRM) reaction and showed a methane reforming rate of 2040 Lh−1gNi−1 at 800°C. NiAl2O4 spinel was formed when Ni nanoparticles were deposited on alpha‐alumina substrates by ALD, which enhanced the Ni‐support interaction. Different cycles (two, five, and ten) of Al2O3 ALD films were applied on the Ni/hollow fiber catalysts to further improve the interaction between the Ni nanoparticles and the hollow fiber support. Both the catalyst activity and stability were improved with the deposition of Al2O3 ALD films. Among the Al2O3 ALD coated catalysts, the catalyst with five cycles of Al2O3 ALD showed the best performance. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2625–2631, 2018

show abstract

“…They employed Ni/SiO 2 catalysts, which exhibited 50% methane conversion at 750 °C, over 15 h of stream reaction [22]. Shang et al also applied Ni metal for DRM, but used γ-Al 2 O 3 as a support, with no CH 4 conversion observed at 850 °C for the first 10 h, and 99% conversion over the following 140 h of reaction [23]. However, transition metal based catalysts have been found to be less resistant to the coking process when compared to noble metals [24].…”

Section: Introductionmentioning

confidence: 99%

Can Ultrasound or pH Influence Pd Distribution on the Surface of HAP to Improve Its Catalytic Properties in the Dry Reforming of Methane?

et al. 2017

View full text Add to dashboard Cite

samples were evaluated for their catalytic activity towards dry reforming of methane (DRM) and the reaction was monitored via a thermal conductivity detector, coupled with gas chromatography (GC-TCD). It was found that ultrasound-assisted IE significantly accelerated the process from 3 days to 3 h and with the Pd 0 metal remaining highly distributed upon the HAP with minor changes in catalytic conversions. Moreover, the ultrasound-assisted IW method successfully improved the Pd 0 distribution and catalytic performance. On the other hand, the dispersion of the metal was unaffected after pH treatments in IE with no catalytic improvements observed, in contrast to IW, where considerable increase in metal distribution and subsequently catalytic performance was observed.Abstract The influence of ultrasound and different pH pre-treatments during the metal doping/modification of a hydroxyapatite (HAP) support is investigated. HAP is first synthesised via a hard-template synthetic route using carbon nanorods followed by their full physiochemical characterisation. The HAP was found to be crystalline and comprised a mesoporous structure as observed via XRD and nitrogen adsorption with a BET surface area of 97.57 (±1.16) m 2 g −1. Ultrasound-assisted ion exchange (IE) and incipient wetness impregnation (IW) methodologies were employed to decorate the surface of HAP with Pd 0 and are compared to previous procedures. The influence of pH upon the distribution of Pd 0 throughout the samples during the doping process is also studied. All the prepared Electronic supplementary material The online version of this article

show abstract

Highly active and stable alumina supported nickel nanoparticle catalysts for dry reforming of methane

Cited by 174 publications

References 48 publications

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Nano‐engineered nickel catalysts supported on 4‐channel α‐Al₂O₃ hollow fibers for dry reforming of methane

Can Ultrasound or pH Influence Pd Distribution on the Surface of HAP to Improve Its Catalytic Properties in the Dry Reforming of Methane?

Contact Info

Product

Resources

About

Highly active and stable alumina supported nickel nanoparticle catalysts for dry reforming of methane

Cited by 174 publications

References 48 publications

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Nano‐engineered nickel catalysts supported on 4‐channel α‐Al2O3 hollow fibers for dry reforming of methane

Can Ultrasound or pH Influence Pd Distribution on the Surface of HAP to Improve Its Catalytic Properties in the Dry Reforming of Methane?

Contact Info

Product

Resources

About

Nano‐engineered nickel catalysts supported on 4‐channel α‐Al₂O₃ hollow fibers for dry reforming of methane