Effect of CeO2 addition on Ni/Al2O3 catalysts for methanation of carbon dioxide with hydrogen

Liu, Hezhi; Zou, Xingli; Wang, Xueguang; Lu, Xionggang; Ding, Wei

doi:10.1016/s1003-9953(11)60422-2

Cited by 195 publications

(102 citation statements)

References 31 publications

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“…By comparison: (i) Ando et al reported a 56% CO 2 conversion with 98% CH 4 selectivity at 300 • C for a neat LaNi 5 catalyst prepared by arc melting (pressure = 1 atm, H 2 :CO 2 ratio = 4:1, WHSV = 3000 mL·h −1 ·g −1 cat.) [18]; (ii) Liu et al reported a 45% CO 2 conversion with 99% CH 4 selectivity at 300 • C for a Ni/Al 2 O 3 catalyst prepared by impregnation (pressure = 1 atm, H 2 :CO 2 ratio = 4:1, WHSV = 15,000 mL·h −1 ·g −1 cat., 15 wt % Ni loading) [39]; and (iii) Abelló et al reported a 8% CO 2 conversion with 95% CH 4 selectivity at 300 • C for a Ni 6 Al (reduced) catalyst prepared by co-precipitation (pressure = 5 atm, H 2 :CO 2 ratio = 4:1, WHSV = 26.88 × 10 5 mL·h −1 ·g −1 cat., 69.1 wt % Ni loading) [38]. The stability profile also showed that an initial induction period (~90 min) was needed prior to the catalyst reaching a stable and maximum activity.…”

Section: Catalyst Performancementioning

confidence: 99%

An Alumina-Supported Ni-La-Based Catalyst for Producing Synthetic Natural Gas

et al. 2016

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LaNi 5 , known for its hydrogen storage capability, was adapted to the form of a metal oxide-supported (γ-Al 2 O 3 ) catalyst and its performance for the Sabatier reaction assessed. The 20 wt % La-Ni/γ-Al 2 O 3 particles were prepared via solution combustion synthesis (SCS) and exhibited good catalytic activity, achieving a CO 2 conversion of 75% with a high CH 4 selectivity (98%) at 1 atm and 300 • C. Characteristics of the La-Ni/γ-Al 2 O 3 catalyst were identified at various stages of the catalytic process (as-prepared, activated, and post-reaction) and in-situ DRIFTS was used to probe the reaction mechanism. The as-prepared catalyst contained amorphous surface La-Ni spinels with particle sizes <6 nm. The reduction process altered the catalyst make-up where, despite the reducing conditions, Ni 2+ -based particles with diameters between 4 and 20 nm decorated with LaO x moieties were produced. However, the post-reaction catalyst had particle sizes of 4-9 nm and comprised metallic Ni, with the LaO x decoration reverting to a form akin to the as-prepared catalyst. DRIFTS analysis indicated that formates and adsorbed CO species were present on the catalyst surface during the reaction, implying the reaction proceeded via a H 2 -assisted and sequential CO 2 dissociation to C and O. These were then rapidly hydrogenated into CH 4 and H 2 O.

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Section: Catalyst Performancementioning

confidence: 99%

An Alumina-Supported Ni-La-Based Catalyst for Producing Synthetic Natural Gas

et al. 2016

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“…CH 4 selectivity, independently from the CeO 2 content, is higher than 99%. Stability was measured for a reaction time up to 120 h [103]. In [104], the effect of different promoters (CeO 2 , MnO 2 , IrO 2 , La 2 O 3 ) on the catalytic performance of Ni supported on Al 2 O 3 mesoporous nanoparticles was investigated.…”

Section: Alumina-supported Nickelmentioning

confidence: 99%

Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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CO 2 methanation is a well-known reaction that is of interest as a capture and storage (CCS) process and as a renewable energy storage system based on a power-to-gas conversion process by substitute or synthetic natural gas (SNG) production. Integrating water electrolysis and CO 2 methanation is a highly effective way to store energy produced by renewables sources. The conversion of electricity into methane takes place via two steps: hydrogen is produced by electrolysis and converted to methane by CO 2 methanation. The effectiveness and efficiency of power-to-gas plants strongly depend on the CO 2 methanation process. For this reason, research on CO 2 methanation has intensified over the last 10 years. The rise of active, selective, and stable catalysts is the core of the CO 2 methanation process. Novel, heterogeneous catalysts have been tested and tuned such that the CO 2 methanation process increases their productivity. The present work aims to give a critical overview of CO 2 methanation catalyst production and research carried out in the last 50 years. The fundamentals of reaction mechanism, catalyst deactivation, and catalyst promoters, as well as a discussion of current and future developments in CO 2 methanation, are also included.

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“…While CO 2 methanation catalysts based on noble metals such as Rh or Ru do not normally present sintering problems, Ni, Cu or Co based samples, among others, are more susceptible to metal particles agglomeration and aggregation, leading to significant effects on the dispersion. In this context, several works reported the beneficial effect of adding transition metals, noble metals, lanthanides or even alkali earth metals in partially suppressing Ni particles sintering ,,,,,,,,. Among all, Ce has been the most commonly used,,,,,,,, mainly due to its effects, not only on the dispersion of the metallic species (from ∼19 to ∼3 nm Ni 0 particles in 5 %Ni/USY and 5 %Ni‐3 %Ce/USY catalysts, respectively), but also due to the favoured activation of CO 2 over Ce species, as it will be further discussed later.…”

Section: Relevant Properties Of Zeolites For Co2 Methanationmentioning

confidence: 99%

Tuning Zeolite Properties towards CO₂ Methanation: An Overview

et al. 2019

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This work provides a short review of the literature concerning the utilization of zeolites as supports for CO2 methanation catalysts. Indeed, the application of these materials in carbon dioxide hydrogenation into methane has led to considerably relevant performances according to the literature, being zeolite‐based catalysts more active and selective than commercial materials reported. Considering the well‐known zeolite features and the possibility to finely modulate its properties, inducing relevant changes on the adsorbed metal species and in the CO2 activation ability of the catalyst, potentially interesting catalytic properties can be generated also towards this transformation. Possible correlations between the characteristics of these materials, found as relevant for CO2 methanation, and the catalytic properties will be then presented and discussed.

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Effect of CeO2 addition on Ni/Al2O3 catalysts for methanation of carbon dioxide with hydrogen

Cited by 195 publications

References 31 publications

An Alumina-Supported Ni-La-Based Catalyst for Producing Synthetic Natural Gas

An Alumina-Supported Ni-La-Based Catalyst for Producing Synthetic Natural Gas

Supported Catalysts for CO2 Methanation: A Review

Tuning Zeolite Properties towards CO₂ Methanation: An Overview

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Effect of CeO2 addition on Ni/Al2O3 catalysts for methanation of carbon dioxide with hydrogen

Cited by 195 publications

References 31 publications

An Alumina-Supported Ni-La-Based Catalyst for Producing Synthetic Natural Gas

An Alumina-Supported Ni-La-Based Catalyst for Producing Synthetic Natural Gas

Supported Catalysts for CO2 Methanation: A Review

Tuning Zeolite Properties towards CO2 Methanation: An Overview

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Product

Resources

About

Tuning Zeolite Properties towards CO₂ Methanation: An Overview