Stable hydrogen production by methane steam reforming in a two-zone fluidized-bed reactor: Effect of the operating variables

Pérez-Moreno, Lucía C.; Soler, J.; Herguido, J.; Menéndez, M.

doi:10.1016/j.ijhydene.2013.04.122

Cited by 18 publications

(6 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In that way, it is possible to operate in steady state with a feed (considering the sum of the two feeds in the TZFBR) that would cause catalyst deactivation in a conventional reactor. A wide study of the operating conditions, showed they effect on hydrogen yield, as well as the operation limits to obtain steady state operation [13]. The use of water as regenerating agent was a main novelty of this work, since in previous works we always used oxygen as the reactant for coke removal.…”

Section: New Reactions Methane Steam Reformingmentioning

confidence: 99%

Advances and trends in two-zone fluidized-bed reactors

Herguido

Menéndez

2017

Current Opinion in Chemical Engineering

View full text Add to dashboard Cite

Two-zone fluidized bed reactors, devices to carry on two reactions in a single reactor, have been widely studied in our group. This work summarizes the developments achieved after a previous review published in 2005 and shows how this technology can be applied in a wide variety of reactions. The advantages for each kind of process are discussed, as well as several proposals for improvement of the reactor aimed to achieve new functions or to improve the process performance. Finally, the possibilities of this kind of reactors at industrial scale are discussed. 1.

show abstract

Section: New Reactions Methane Steam Reformingmentioning

confidence: 99%

Advances and trends in two-zone fluidized-bed reactors

Herguido

Menéndez

2017

Current Opinion in Chemical Engineering

View full text Add to dashboard Cite

show abstract

“…Different supports such as γ ‐Al 2 O 3 , α ‐Al 2 O 3 , MgO, SiO 2 , MgAl 2 O 4 , etc. are applied in reforming processes . Among the investigated catalysts, García‐Diéguez et al investigated the performance of Ni‐based catalysts supported on nanostructured alumina and reported that CO 2 and CH 4 conversions of a 4 %Ni/Al 2 O 3 catalyst decreased after 14 h time‐on‐stream .…”

Section: Introductionmentioning

confidence: 99%

Ni Catalysts Supported on Mesoporous Nanocrystalline Magnesium Silicate in Dry and Steam Reforming Reactions

2017

View full text Add to dashboard Cite

Mesoporous nanocrystalline MgSiO 3 with high surface area was synthesized by a hydrothermal method and employed as support in dry and steam reforming of methane. Ni/MgSiO 3 catalysts were prepared by an impregnation method and characterized by different techniques. N 2 adsorption analysis indicated that addition of nickel shifted the pore size distributions to smaller sizes. Temperatureprogrammed reduction analysis revealed that a higher nickel loading enhanced the reducibility of the catalyst. The catalytic performance was improved with increasing the nickel content. The Ni/MgSiO 3 catalyst exhibited high stability in dry reforming but methane conversion declined with time-on-stream in the steam reforming reaction. Temperature-programmed oxidation profiles of spent catalysts indicated that the high amount of carbon deposited on the catalyst surface in dry and steam reforming was assigned to whisker-type carbon.

show abstract

“…Thus, lots of researches have focused on improving the Ni-based catalysts by changing the support, catalyst preparation methods and addition of promoters [22][23][24]. The effects of various supports such as γ-Al 2 O 3 , α-Al 2 O 3 , MgO, SiO 2 on the catalytic performance have been investigated [25][26][27]. Among the studied supports, MgO shows high thermal strength, low price and can be employed as an effective catalyst support [28][29][30].…”

Section: Introductionmentioning

confidence: 99%