Hydrogen Production by Ethanol Steam Reforming on NiCuMgAl Catalysts Derived from Hydrotalcite-Like Precursors

Yu, Xiaopeng; Chu, Wei; Wang, Ning; Ma, Fei

doi:10.1007/s10562-011-0608-0

Cited by 50 publications

(34 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This transition is related to the release of interlayer water molecules from the structure. The second DTG-DTA peak occurs at temperatures between 248 and 268°C and is commonly ascribed to the removal of hydroxyl host-layers and CO 3 2-from the structure 34 , although this peak might include the release of NO provided by the decomposition of nitrates from the precursors. Table 1 shows that the second peak is shifted towards higher temperatures for the MgCoAl sample, which suggests a higher thermal stability for this material 35 .…”

Section: Resultsmentioning

confidence: 99%

Dry reforming of methane at moderate temperatures over modified Co-Al Co-precipitated catalysts

2014

View full text Add to dashboard Cite

M-Co-Al (M = Ca, La, Li or Mg) materials were synthesised by co-precipitation and investigated for dry reforming of methane. Thermogravimetry, temperature-programmed oxidation, reduction and CO 2 desorption, specific area and X-ray diffraction were utilised for characterisation. Activity tests were conducted at atmospheric pressure, temperatures between 400-550°C , CH 4 /CO 2 molar ratio of 1 and GHSV of 6000 NmL CH 4 ·g -1 ·h -1 . The partial substitution of Co by a third element increased the area and changed the acid/base properties, reducibility and crystallinity of the oxides. These modifications resulted in higher activity for dry reforming of methane, mainly related to the decrease in the acidity of the promoted materials and, consequently, lower carbon formation. The Li-modified sample presented the lowest coke deposition due to the increase in stronger basic sites. The Mg-promoted catalyst exhibited the best activity performance. This depicts the enhancement in the reducibility and acid/base properties found in the MgCoAl sample.

show abstract

Section: Resultsmentioning

confidence: 99%

Dry reforming of methane at moderate temperatures over modified Co-Al Co-precipitated catalysts

2014

View full text Add to dashboard Cite

show abstract

“…[58][59][60][61][62][63][64] Additionally, by introducing two different reducible cations in the LDH structure (e.g. Ni-Cu; [65][66][67] Ni-Co, [68][69][70] Pd-Cu, 71,72 among others), the subsequent thermal activation/ reduction can lead to the formation of bimetallic catalysts, whose catalytic and stability properties are generally better than those of the respective monometallic systems. The anion-exchange capacity of LDHs has also been exploited as a way to incorporate well-dispersed catalytic species in the interlayer-gallery space.…”

Section: Metal-supported Catalystsmentioning

confidence: 99%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

View full text Add to dashboard Cite

Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase. Among these processes, the valorization/upgrading of lignocellulosic biomass and derived molecules have attracted enormous attention because it constitutes a pivotal axis in the transition from an economic model based on fossil resources to one based on renewable biomass resources with preference for biomass waste streams. Proof of this is the increasing amount of literature reports regarding the rational design and implementation of LDHs and related materials in catalytic processes such as: depolymerization, hydrogenation, selective oxidations, and C-C coupling reactions, among others, where biomass-derived compounds are used. The major aim of this contribution is to situate the most recent advances on the implementation of these types of catalysts into a lignocellulosic-feedstock biorefinery scheme, highlighting the versatility of LDHs and derived materials as multifunctional, tunable, cheap and easy to produce heterogeneous catalysts.

show abstract

“…The addition of appropriate metals to Ni-based catalysts can often bring about high reforming activity and selectivity to hydrogen. As is found that the addition of Cu to Ni-based catalysts is beneficial to water-gas-shift reaction and dehydrogenation, thus enhances the hydrogen production [84,85]. Lanthanide metals can promote the ease of catalyst reduction and decrease the reduction temperature [86,87].…”

Section: Promoter Effectmentioning

confidence: 99%

Development of Ni-Based Catalysts Derived from Hydrotalcite-Like Compounds Precursors for Synthesis Gas Production via Methane or Ethanol Reforming

Cheng

et al. 2017

Catalysts

View full text Add to dashboard Cite

As a favorably clean fuel, syngas (synthesis gas) production has been the focus of concern in past decades. Substantial literatures reported the syngas production by various catalytic reforming reactions particularly in methane or ethanol reforming. Among the developed catalysts in these reforming processes, Ni-based catalysts from hydrotalcite-like compounds (HTLcs) precursors have drawn considerable attention for their preferable structural traits. This review covers the recent literature reporting syngas production with Ni-based catalysts from HTLc precursors via methane or ethanol reforming. The discussion was initiated with catalyst preparation (including conventional and novel means), followed by subsequent thermal treatment processes, then composition design and the addition of promoters in these catalysts. As Ni-based catalysts have thermodynamic potential to deactivate because of carbon deposition or metal sintering, measures for dealing with these problems were finally summarized. To obtain optimal catalytic performances and resultantly better syngas production, based on analyzing the achievements of the references, some perspectives were finally proposed.

show abstract

Hydrogen Production by Ethanol Steam Reforming on NiCuMgAl Catalysts Derived from Hydrotalcite-Like Precursors

Cited by 50 publications

References 46 publications

Dry reforming of methane at moderate temperatures over modified Co-Al Co-precipitated catalysts

Dry reforming of methane at moderate temperatures over modified Co-Al Co-precipitated catalysts

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Development of Ni-Based Catalysts Derived from Hydrotalcite-Like Compounds Precursors for Synthesis Gas Production via Methane or Ethanol Reforming

Contact Info

Product

Resources

About