Steam reforming of acetic acid over coal ash supported Fe and Ni catalysts

Wang, Shurong; Zhang, Fan; Cai, Qinjie; Zhu, Lingjun; Luo, Zhongyang

doi:10.1016/j.ijhydene.2015.03.056

Cited by 69 publications

(26 citation statements)

References 40 publications

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“…In addition, the addition of K might promote the reforming of hydrocarbons [24], which can contribute to the production of H2 through reforming reactions. And similar phenomenon was found by Wang et al [47,48], they studied the effect of alkali metal on the catalytic reforming of bio-oil.…”

Section: 2supporting

confidence: 77%

Hydrogen production from pyrolysis catalytic reforming of cellulose in the presence of K alkali metal

Zou

Yang

Zeng

et al. 2016

International Journal of Hydrogen Energy

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Abstract:The inherent alkaline metals in biomass material are known to be volatile during biomass pyrolysis. However, there are very limited works about the investigation of the influence of alkaline metal on hydrogen production from downstream catalytic reforming of pyrolysis vapors. In this study, the influence of volatile K inside the cellulose sample was investigated in terms of hydrogen production and catalyst stability using a two-stage fixed-bed reaction system in the presence of a Ni/Al2O3 catalyst. When the content of K in the cellulose sample was increased from 0 to 15%, the deposition of K on the surface of the reacted catalyst was kept constant at around 0.5 wt.% in terms of the weight of the catalyst. The life time test shows that hydrogen production was around 28 (mmol g -1 cellulose) for each experiment, when the catalyst was reused 5 times using the pure cellulose sample. However, the hydrogen production was significantly reduced to 22 (mmol g -1 cellulose) after the catalyst was reused 5 times with the 2.5%K/cellulose sample. X-Ray Fluorescence analysis shows that the reduce hydrogen production might be ascribed to the increase of the K deposition on the surface of the reused catalyst.

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Section: 2supporting

confidence: 77%

Hydrogen production from pyrolysis catalytic reforming of cellulose in the presence of K alkali metal

Zou

Yang

Zeng

et al. 2016

International Journal of Hydrogen Energy

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“…Prior to the reactions, the coal ash after tabletting was crushed and sieved to a size of 40 to 60-mesh. In our previous work, the selected coal ash named ZDA was studied as a catalyst support in acetic acid reforming (Wang et al 2015a).…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…2, and it could be found that 5 wt.% Ni/γ-Al2O3 catalyst showed a relatively larger main pore size compared with 10 and 15 wt.% Ni/γ-Al2O3 catalysts, in accordance with Table 2. (Wang et al 2015a) 3.55 0.02 29.9 ; JCPD 44-1159). The patterns were quite similar because of consistent preparation procedures.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…%, the NiAl2O4 peaks became narrower; this indicated a larger crystal size, which were measured to be 4.46, 4.72, and 5.05 nm for 5, 10, and 15 wt.% Ni catalysts according to the Scherrer formula, respectively. Typical crystals such as quartz and anhydrite are shown in the XRD pattern of ZDA (Wang et al 2015a). The features of ZDA were systematically characterized, including chemical composition, surface morphology observed by scanning electron microscopy (SEM), hydrogen temperature programmed reduction (H2-TPR), and powder X-ray diffraction patterns from our earlier research (Wang et al 2015a).…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…Typical crystals such as quartz and anhydrite are shown in the XRD pattern of ZDA (Wang et al 2015a). The features of ZDA were systematically characterized, including chemical composition, surface morphology observed by scanning electron microscopy (SEM), hydrogen temperature programmed reduction (H2-TPR), and powder X-ray diffraction patterns from our earlier research (Wang et al 2015a). In brief, the coal ash (ZDA) mostly contained SiO2, Al2O3, Fe2O3, and various alkali and alkaline earth metals, such as MgO and CaO.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Coal Ash on the Steam Reforming of Simulated Bio-oil for Hydrogen Production over Ni/γ-Al2O3

Zhang¹,

Wang²,

Chen³

et al. 2016

BioResources

Self Cite

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An improved system for hydrogen production by the steam reforming of simulated bio-oil was developed. The coal ash was packed in front of nickel-based catalysts, acting as a guard catalyst. The model compounds passed through coal ash and were preliminarily reformed to smaller molecular intermediates containing more CO and CH4, which were then further reformed over the following nickel-reforming catalyst. The improved reaction system succeeded in effectively converting the complex simulated bio-oil into hydrogen and exhibited high activity. For 15 wt.% Ni/γ-Al2O3 catalyst with coal ash packing, the catalyst lifetime was extended to 8 h, with simulated bio-oil almost completely converted into hydrogen. In addition, coke deposition was suppressed.

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Hydrogen Production from Catalytic Steam Reforming of Bio‐Oils: A Critical Review

Zhao

Situmorang

et al. 2020

Chem Eng & Technol

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In the future, hydrogen will be an important energy carrier and industrial raw material. Catalytic steam reforming of bio‐oils is a promising and economically viable technology for hydrogen production. However, during the reforming process, the catalysts are rapidly deactivated due to coke formation and sintering. Thus, maintaining the activity and stability of catalysts is the key issue in this process. Optimized operation conditions could extend the catalyst lifetime by affecting the coke morphology or promoting coke gasification. This article summarizes the recent developments in the field of catalytic steam reforming of bio‐oils, focusing on the operation conditions, the properties of the catalysts, and the effects of the catalyst supports. The expected insights into the catalytic steam reforming of bio‐oils will provide further guidance for hydrogen production from bio‐oils.

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Steam reforming of acetic acid over coal ash supported Fe and Ni catalysts

Cited by 69 publications

References 40 publications

Hydrogen production from pyrolysis catalytic reforming of cellulose in the presence of K alkali metal

Hydrogen production from pyrolysis catalytic reforming of cellulose in the presence of K alkali metal

Effect of Coal Ash on the Steam Reforming of Simulated Bio-oil for Hydrogen Production over Ni/γ-Al2O3

Hydrogen Production from Catalytic Steam Reforming of Bio‐Oils: A Critical Review

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