Calcium silicate-based catalytic filters for partial oxidation of methane and biogas mixtures: Preliminary results

Tezel, Elif; Unlu, Esra Balkanli; Figen, Halit Eren; Baykara, S.Z.

doi:10.1016/j.ijhydene.2020.09.015

Cited by 10 publications

(5 citation statements)

References 56 publications

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“…138 Similarly, when Ni was supported on silicalite zeolites, Ni silicate was formed in the defect sites, which was stable during the reaction, resulting in a strong coke resistance and high H 2 selectivity. 107 In another case where Ni was loaded on an ITQ-6 zeolite, large amounts of defect groups (e.g., terminal silanols, Si−OH) were identified at the zeolite surface based on the high proportion of Q 3 species in 29 Si MAS NMR spectra (Figure 7a). 167 As a consequence, Ni particles were confined within the interlayer interstices among the silanol group, improving the sintering resistance (<20 nm), anticoking property (2.1%), catalytic activities (77% for CH 4 and 90% for CO 2 ), and durability (constant over 10 h reaction at 700 °C) (Figure 7b) (Table 2).…”

Section: Thermal and Hydrothermal Stabilitymentioning

confidence: 99%

“…However, the possible existence of hot spots and explosions potentially harms the catalytic performance and operation safety. Also, the O 2 supply is a costly process . In comparison, DRM benefits from the utilization of two greenhouse gases (i.e., CH 4 and CO 2 ), and the H 2 /CO ratio of one favors the Fischer–Tropsch synthesis to produce a series of value-added chemicals (e.g., methanol, dimethyl ether, oxyalcohol, acetic acid, and long-chain hydrocarbons). − The bottleneck of DRM industrialization is the catalyst deactivation under harsh reaction conditions, mainly caused by coke formation, active site sintering, and catalyst poisoning. ,− …”

Section: Introductionmentioning

confidence: 99%

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Smart Designs of Zeolite-Based Catalysts for Dry Reforming of Methane: A Review

Qiu,

Zhong,

Yang

et al. 2024

Energy Fuels

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Dry reforming of methane (DRM) is a promising way of transforming greenhouse gases into syngas products and value-added chemicals. Owing to their strong CO 2 adsorption, ordered pore structure, and high surface area, zeolites have been widely applied as the catalyst or the support of catalysts for DRM. In this review, the synthesis and modification strategies of zeolites are comprehensively summarized. Besides, the structure−performance relationship is elucidated by referring to the compositional/physicochemical properties of zeolites and catalytic performances in DRM. In addition, zeolite crystal structures are introduced in classification, and the impacts of reaction parameters on the activity/stability are discussed in detail. Lastly, conclusive remarks and prospects are proposed for reference.

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Section: Thermal and Hydrothermal Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Smart Designs of Zeolite-Based Catalysts for Dry Reforming of Methane: A Review

Qiu,

Zhong,

Yang

et al. 2024

Energy Fuels

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“…Due to the complex composition of real tar, benzene, toluene, naphthalene, and sometimes tetradecane or furfural have been mainly employed as model tar compounds to better understand the catalytic mechanism. 125,206 Using naphthalene vapour (gas phase) as a tar model compound, 186 its conversion reactions could be presented as the idealised eqn ( 17)-( 20) as follows:…”

Section: Catalytic Mechanisms and Performancementioning

confidence: 99%

Section: Challenges Of Tar Production and Strategies For Its Reductio...mentioning

confidence: 99%

A review of the thermochemistries of biomass gasification and utilisation of gas products

Alves

Onwudili

Ghorbannezhad

et al. 2023

Sustainable Energy Fuels

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“…In addition, since this reaction is endothermic, a large amount of energy is consumed. On the other hand, the partial oxidation of methane [11][12][13][14][15], Equation (2) reacts with methane using less than stoichiometric amount of oxygen to obtain hydrogen. This reaction is exothermic and occurs more rapidly than methane-steam reforming and the reactor size is small.…”

Section: Introductionmentioning

confidence: 99%

The Partial Oxidation of Methane to Hydrogen over M(1)-Ni(5)/AlCeO<sub>3</sub>(M=Ce, La, Y) Catalysts

Seo¹

2022

AJCHE

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The catalytic yields of partial oxidation of methane (POM) to hydrogen over M(1)-Ni(5)/Al 2 O 3 (M=, Ce, La, Y) catalysts were investigated using a fixed bed flow reactor under atmospheric pressure to solve the global warming problem and clean energy demand. Catalyst activity is evaluated by performing the reaction of POM to hydrogen, and active sites of the catalyst are verified by instrumental analysis. The catalysts were characterized by XPS, XRD, FESEM, EDS, FETEM. The crystal phase behavior of reduced La(1)-Ni(5)/AlCeO 3 catalysts before and after the reaction were studied by XRD analysis. The crystalline phase of Ni and La on La(1)-Ni(5)/AlCeO 3 reduced before reaction was not obserbed due to uniform distribution of nanoparticles. FESEM and EDS analyses show that nanoparticles of Ni, La and Ce are uniformly distributed on the catalyst surface. In addition, TEM images and EDS mapping of La, Ni, Ce, O, and Al for a reduced La(1)-Ni(5)/AlCeO 3 catalyst before reaction show that the elements are well distributed. When 1 wt% of La was added to Ni(5)/AlCeO 3 catalyst, XPS results showed that O -, O vacancy , and O 2 species, Ni 2 p 3/2 , and Ce3d 5/2 increased 1.4, 52.7, 6.3% on the La(1)-Ni(5)/ AlCeO 3 catalyst, respectively. The yield of hydrogen on the La(1)-Ni(5)/ AlCeO 3 catalyst was 89.1%, which was much better than that of M(1)-Ni(5)/Al 2 O 3 (M=Ce, Y) catalysts. As Ce 4+ /Ce 3+ ions in CeO 2 produced by the reaction of AlCeO 3 with oxygen were substitute to La 3+ , Ni 2+ , it made oxygen vacancies in the lattice and further improved the hydrogen yield by increasing the dispersion of Ni atoms with strong metal-support interaction (SMSI) effect.

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Calcium silicate-based catalytic filters for partial oxidation of methane and biogas mixtures: Preliminary results

Cited by 10 publications

References 56 publications

Smart Designs of Zeolite-Based Catalysts for Dry Reforming of Methane: A Review

Smart Designs of Zeolite-Based Catalysts for Dry Reforming of Methane: A Review

A review of the thermochemistries of biomass gasification and utilisation of gas products

The Partial Oxidation of Methane to Hydrogen over M(1)-Ni(5)/AlCeO<sub>3</sub>(M=Ce, La, Y) Catalysts

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Calcium silicate-based catalytic filters for partial oxidation of methane and biogas mixtures: Preliminary results

Cited by 10 publications

References 56 publications

Smart Designs of Zeolite-Based Catalysts for Dry Reforming of Methane: A Review

Smart Designs of Zeolite-Based Catalysts for Dry Reforming of Methane: A Review

A review of the thermochemistries of biomass gasification and utilisation of gas products

The Partial Oxidation of Methane to Hydrogen over M(1)-Ni(5)/AlCeO&lt;sub&gt;3&lt;/sub&gt;(M=Ce, La, Y) Catalysts

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The Partial Oxidation of Methane to Hydrogen over M(1)-Ni(5)/AlCeO<sub>3</sub>(M=Ce, La, Y) Catalysts