Catalytic activities and coking resistance of Ni/perovskites in steam reforming of methane

Urasaki, Kohei; Sekine, Yasushi; Kawabe, Sho; Kikuchi, Eiichi; Matsukata, Masahiko

doi:10.1016/j.apcata.2005.02.020

Cited by 176 publications

(78 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, the obtained BTOSiO 2 catalyst was applied to methane steam reforming. 5) Results show that the methane conversion ratio of this material was approximately three times as large as that of the reported BTO catalyst, 4) even at a lower processing temperature. However, the temperature limit of this material was 600°C because of the generation of Ba 2 (TiO)Si 2 O 7 phase during steam reforming, which is attributable to the diffusion of Ba component to SiO 2 core particles during the process.…”

Section: )2)mentioning

confidence: 89%

See 1 more Smart Citation

Preparation of barium titanate hollow particle by two-step chemical solution deposition

Ohno

Sugiura

Watanabe

et al. 2013

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

Barium titanate (BTO) hollow particles were prepared using two-step chemical solution deposition with a template particle. Polystyrene (PSt) was selected as the template particle, and N-(hydroxymethyl)acrylamide (HMAm) was polymerized as a comonomer to generate the hydrophilic group on the PSt template particle surface. The BTO monophase was attained at [Ba]/[TiO 2 ] = 1.0 using 350°C pre-annealed TiO 2 precursor hollow particles. The obtained BTO particle was a hollow structure with shell thickness of approximately 45 nm. The surface area of the obtained BTO hollow particle was 12 m 2 /g, which was approximately twice as large as that of alkoxide-derived BTO particles created with the same annealing temperature.

show abstract

Section: )2)mentioning

confidence: 89%

“…Lately, Ni on perovskite material (Ni/Perovskite) has received much attention as a catalyst for methane steam reforming and partial oxidation of CH 4 .…”

Section: )2)mentioning

confidence: 99%

Preparation of barium titanate hollow particle by two-step chemical solution deposition

Ohno

Sugiura

Watanabe

et al. 2013

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

show abstract

“…50,87 A presença desses compostos deve-se à ocorrência do craqueamento da carga em altas temperaturas, podendo levar à formação de produtos primários (>C5), hidrocarbonetos secundários (C1-C4), além de coque. 46 52,89 Adicionalmente, os estudos mostraram que a adição de 10 %m/m de naftaleno em solução de tolueno causou uma redução acentuada na conversão do tolueno, pois o naftaleno se adsorve mais fortemente que o tolueno, prejudicando a conversão deste último. 90 A Figura 4 ilustra o tipo de coque formado na reação de reforma a vapor de naftaleno/tolueno a 800 °C, com razão V/C = 1,5.…”

Section: Catalisadores Metálicosunclassified

Tar Removal From Biomass Gasification Streams: Processes and Catalysts

Quitete¹,

Souza²

2014

Química Nova

View full text Add to dashboard Cite

“…One approach to solve these problems is to highly disperse the active species, which improves apparent catalytic activity and enhances the reactivity of possible intermediate carbonaceous species in the reforming reactions. Supported base metal catalysts with high dispersion have been prepared using uniform mixed oxide materials such as hexaaluminates, hydrotalcites, and perovskites Urasaki et al, 2005;Li et al, 2009). In this study, nickel-containing spinel-type oxide catalysts were developed for methane and propane steam reforming, and nitrous oxide titration was used for the first time for the characterization of nickel surface area of the spinel-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Novel Nickel Catalysts Based on Spinel-Type Mixed Oxides for Methane and Propane Steam Reforming

Kikuchi

Yokoyama

Takagaki

et al. 2014

J. Chem. Eng. Japan / JCEJ

View full text Add to dashboard Cite

Novel nickel catalysts based on magnesium aluminate spinel-type mixed oxides are developed as hydrocarbon reforming catalysts for hydrogen supply to polymer electrolyte fuel cells. The spinel catalysts were prepared by co-precipitation and the Pechini method, and the spinels prepared by the former method exhibited higher activity for methane steam reforming. The e ect of spinel composition, Mg 1 x Ni x Al 2 O 4 (x 0.17, 0.35, 0.50, 0.70, 1) was investigated on the activity and resistance to carbon deposition in steam reforming reaction. The turnover frequency for methane steam reforming at a steam-to-carbon (S/C) ratio of 2 increased with increase in the x value from 0.17 to 0.35, and then gradually decreased with further increase in the nickel content. The carbon deposition tolerance of the spinel catalysts was examined in propane steam reforming at S/C 1 and 600°C. The propane conversion during the reaction was ca. 98% over all catalysts tested, and the amount of deposited carbon, determined as carbon dioxide by temperature programmed oxidation, was least at x 0.17, which is 1/8 of that deposited on a conventional Ni/γ-Al 2 O 3 catalyst. The spinels with x≤0.5 exhibited smaller amounts of carbon deposition, and thus superior tolerance to deactivation.

show abstract

Catalytic activities and coking resistance of Ni/perovskites in steam reforming of methane

Cited by 176 publications

References 17 publications

Preparation of barium titanate hollow particle by two-step chemical solution deposition

Preparation of barium titanate hollow particle by two-step chemical solution deposition

Tar Removal From Biomass Gasification Streams: Processes and Catalysts

Novel Nickel Catalysts Based on Spinel-Type Mixed Oxides for Methane and Propane Steam Reforming

Contact Info

Product

Resources

About