Study of Ru Ni/TiO2 catalysts for selective CO methanation

Tada, Shohei; Kikuchi, Ryoichi; Takagaki, Atsushi; Sugawara, Takashi; Oyama, S. Ted; Urasaki, Kohei; Satokawa, Shigeo

doi:10.1016/j.apcatb.2013.04.024

Cited by 85 publications

(55 citation statements)

References 48 publications

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“…7.a and 7 Although the chlorine component contained in the as-obtained TiO 2 can be removed completely by the heat treatment at 500 ºC in air as shown in Table 2 Accordingly, it is assumed that such Ni chloride species can be formed in the vicinity of the Ni species and reside at the interface of the Ni and TiO 2 . The formation of such Ni chloride at the interface is essential in inhibiting CO 2 conversion to intermediates in r-WGS such as formate species [53,61,65]. Furthermore, since the CO methanation activity was maintained as shown in Fig.…”

Section: 2 Effect Of Chlorine Content In Ni/tio 2 Catalystmentioning

confidence: 91%

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Role of trace chlorine in Ni/TiO2 catalyst for CO selective methanation in reformate gas

Shimoda

Shoji

Tani

et al. 2015

Applied Catalysis B: Environmental

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Section: 2 Effect Of Chlorine Content In Ni/tio 2 Catalystmentioning

confidence: 91%

“…In our recent work, we have reported that Ru and Ni based catalysts exhibited superior activity [61][62][63][64][65][66][67][68] for CO-SEMT. Especially, Ru and Ni catalysts supported on the titania supplied from Evonik Degussa (P25) showed high activity for CO methanation with high CO/CO 2 reaction selectivity in the CO-SMET reaction.…”

Section: Introductionmentioning

confidence: 98%

Role of trace chlorine in Ni/TiO2 catalyst for CO selective methanation in reformate gas

Shimoda

Shoji

Tani

et al. 2015

Applied Catalysis B: Environmental

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“…CO was observed as an impurity for CO 2 in certain sources such as waste gas emission from power plants [33,34], the pres- ence of which was reported to inhibit the methanation of CO 2 by strong interaction with the surface of Ni particles [35]. Fig.…”

Section: Influence Of Comentioning

confidence: 99%

A novel W-doped Ni-Mg mixed oxide catalyst for CO2 methanation

Yan

Dai

et al. 2016

Applied Catalysis B: Environmental

174

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a b s t r a c tNovel Ni-W-Mg mixed oxide catalysts (NiWMgO x ) were prepared by homogeneous precipitation and attempted for the methanation of CO 2 . Adding W remarkably promoted the activity with improved stability, anti-CO-poisoning ability and resistance against coke formation compared to the undoped NiMgO x catalyst. The superior reactivity of monodentate formate towards hydrogenation than that of bidentate formate species was identified by DRIFTS analysis and the formation of more active monodentate formate species was indisputably facilitated by W additives, leading to the greatly enhanced catalytic activity. H 2 -TPR and CO 2 -TPD characterization showed that doping W increased the number of stable CO 2 adsorption sites and helped in anchoring the Ni sites as a result of strengthened Ni-Mg interaction, both of which were responsible for the enhanced CO 2 methanation activity and the improved resistance against sintering.

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“…Among the catalysts which are effective in the selective CO methanation reaction, the Ni-and Ru-based catalysts are widely used in this reaction [15][16][17][18][19][20][21][22][23]. In addition to these supported monometallic catalysts, Tada et al disclosed that the supported Ni-Ru catalyst not only has wider temperature window, but also can depress the CO 2 methanation reaction accompanied with CO methanation [7,10,11,24]. Their Ru-additive catalysts exhibited two separated hydrogen consumption peaks in the H 2 -TPR profiles [10,11,24], indicating that Ru separated from Ni particles in terms of the literature [25].…”

Section: Introductionmentioning

confidence: 98%

“…Although both preferential oxidation of CO reaction and the selective CO methanation reactions can further reduce CO to required low concentration, the selective CO methanation reaction is often considered as a more reliable and efficient method to purify the hydrogen-rich gas for PEMFCs [9][10][11][12][13][14]. Among the catalysts which are effective in the selective CO methanation reaction, the Ni-and Ru-based catalysts are widely used in this reaction [15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%