Sorption enhanced steam methane reforming based on nickel and calcium looping: a review

Giuliano, Andrea Di; Gallucci, Katia

doi:10.1016/j.cep.2018.06.021

Cited by 95 publications

(37 citation statements)

References 101 publications

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“…In fact, commercially scaled SESMR would require calcination under high CO 2 partial pressure. [37,39,40] CaO15Ni(N)10 initially behaved as it did in mild regeneration conditions ( Figure 6C vs Figure 6B) and then showed a progressive decrease in SESMR performance. (a) χ CH4 abruptly lowered in the first 15 cycles.…”

Section: Multicycle Tests On Cao15ni(n)10mentioning

confidence: 81%

“…[17] This poses relevant issues for a hypothetical SESMR continuous process at the commercial scale [37] : (a) specific reactor configurations are required, as dual bubbling fluidized bed reactor with solids circulation between reforming and calcination chambers, [38][39][40] or parallel packed-beds alternatively operating in reforming and calcination conditions [41] ; (b) solid particles must ensure the stability of catalytic and sorption functions for a high number of SESMR/calcination cycles as well as adequate mechanical resistance (especially with fluidized bed reactors). [37] Long-term cyclic stability raises specific concerns for CaO utilization, [11] since the sorption capacity of pure CaO rapidly decreases with progressive carbonation/calcination cycles, [42][43][44][45] because of sintering [11,46] In terms of synthetic CaO-based sorbents, the integration of CaO with inert stabilizers is a widely known strategy to limit sintering, for example, with SiO 2 , [47,48] ZrO 2 , [49] MgO, [50] TiO 2 , [51] Y 2 O 3 , [52] and Al 2 O 3 or calcium aluminates as Ca 12 Al 14 O 33 (mayenite). [11] In light of these observations, several synthesis methods were investigated by WP4 to obtain Ni/CaObased CSCMs that fulfil ASCENT requirements, and a high-shear agglomeration of a hydrothermal CaOmayenite sorbent (30 wt% of CaO) and a commercial Nibased reforming catalyst was chosen as their best option.…”

Section: Introductionmentioning

confidence: 99%

“…That wide research effort has resulted in many publications since 2016. [15][16][17]37,56,[58][59][60][61][62][63][64][65] Each one is focused on a specific task or issue. Therefore, each individual work does not provide a full representation of the research that began with the ASCENT project.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sorption enhanced steam methane reforming by Ni/CaO/mayenite combined systems: Overview of experimental results from European research project ASCENT

et al. 2020

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Work Package 4 (WP4) of the European research project ASCENT developed combined sorbent‐catalyst materials (CSCM) for sorption enhanced steam methane reforming (SESMR), based on nickel (Ni) and calcium oxide (CaO). This work summarizes the whole experimental study carried out in ASCENT WP4 on Ni/CaO/mayenite systems obtained from wet mixing and wet impregnation synthesis methods. Effects from Ni precursor (Ni (CH3COO)2 · 4H2O or Ni(NO3)2 · 6H2O), Ni load (from 3 wt%‐10 wt%), and free CaO load (from 0 wt%‐54 wt%) were investigated for 26 materials by means of characterizations and reforming reactivity tests in a packed‐bed microreactor (650°C, 1 atm). Thanks to comparative analyses of the results, evidence emerged about the detrimental influence of low Ni/CaO ratio on the reforming catalytic activity of solid inventories, made of CSCM or even of the raw mixing of CaO‐mayenite and Ni‐mayenite particles. Catalytic materials were active towards reforming only when derived from Ni(NO3)2 · 6H2O. Based on this, the best CSCM (with the lowest free CaO content and the highest Ni load from nickel nitrate) was chosen to further study its industrial applicability by multicycle SESMR/sorbent‐regeneration tests in a bench‐scale packed‐bed rig and attrition tests according to ASTM D5757‐11. The CSCM was stable and active for 200 cycles with regenerations in N2 at 850°C, while a progressive loss of its activity occurred with regenerations in CO2 at 925°C as the cycle number increased due to Ni sintering. Its performance in the attrition tests was comparable to that of calcined dolomite.

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Section: Multicycle Tests On Cao15ni(n)10mentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

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Sorption enhanced steam methane reforming by Ni/CaO/mayenite combined systems: Overview of experimental results from European research project ASCENT

et al. 2020

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“…In this context, the steam methane reforming (SMR) coupled with in situ CO 2 separation is gaining importance as a method for obtaining high-purity hydrogen in one single step [5]. This sorption-enhanced reforming (SER) proposes carrying out the reforming of methane in the presence of a CO 2 sorbent that reacts with the CO 2 as soon as it is formed, pushing the reaction equilibrium towards hydrogen production [6,7]. Due to its good performance and favourable kinetics, CaO-based materials have been typically proposed as CO 2 sorbents in the SER process [7].…”

Section: Introductionmentioning

confidence: 99%

“…This sorption-enhanced reforming (SER) proposes carrying out the reforming of methane in the presence of a CO 2 sorbent that reacts with the CO 2 as soon as it is formed, pushing the reaction equilibrium towards hydrogen production [6,7]. Due to its good performance and favourable kinetics, CaO-based materials have been typically proposed as CO 2 sorbents in the SER process [7]. According to SER equilibrium (see Eqs.…”

Section: Introductionmentioning

confidence: 99%

Ca-Cu Chemical Looping Process for Hydrogen and/or Power Production

Martínez¹,

Fernández²,

Grasa³

2020

Global Warming and Climate Change

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It has been widely reckoned the potential of developing novel CO 2 capture technologies aiming at low-energy penalties and reduced cost as a solution for fighting against climate change. The Ca-Cu chemical looping process emerged as a promising technology for producing hydrogen and/or power with inherently low CO 2 emissions. The core of this concept is the calcination of the CaCO 3 by coupling in the same solid bed the exothermic reduction of a CuO-based material, improving the efficiency of the CO 2 sorbent regeneration step. Significant progress has been made since its first description in 2009, fulfilling the validation of the key stage under relevant conditions for the process in 2016. This chapter compiles the main advances in the Ca-Cu process regarding material development, reactor and process design and lab-scale testing, as well as in process simulation at large scale.

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Plasma‐Assisted Reforming of Methane

Feng

Sun

et al. 2022

Advanced Science

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Methane (CH4) is inexpensive, high in heating value, relatively low in carbon footprint compared to coal, and thus a promising energy resource. However, the locations of natural gas production sites are typically far from industrial areas. Therefore, transportation is needed, which could considerably increase the sale price of natural gas. Thus, the development of distributed, clean, affordable processes for the efficient conversion of CH4 has increasingly attracted people's attention. Among them are plasma technology with the advantages of mild operating conditions, low space need, and quick generation of energetic and chemically active species, which allows the reaction to occur far from the thermodynamic equilibrium and at a reasonable cost. Significant progress in plasma‐assisted reforming of methane (PARM) is achieved and reviewed in this paper from the perspectives of reactor development, thermal and nonthermal PARM routes, and catalysis. The factors affecting the conversion of reactants and the selectivity of products are studied. The findings from the past works and the insight into the existing challenges in this work should benefit the further development of reactors, high‐performance catalysts, and PARM routes.

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Sorption enhanced steam methane reforming based on nickel and calcium looping: a review

Cited by 95 publications

References 101 publications

Sorption enhanced steam methane reforming by Ni/CaO/mayenite combined systems: Overview of experimental results from European research project ASCENT

Sorption enhanced steam methane reforming by Ni/CaO/mayenite combined systems: Overview of experimental results from European research project ASCENT

Ca-Cu Chemical Looping Process for Hydrogen and/or Power Production

Plasma‐Assisted Reforming of Methane

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