Hydrogen production from ethanol steam reforming on Ni-Ce/MMT catalysts

Li, Lin; Tang, Dawei; Song, Yongchen; Jiang, Bo; Zhang, Qian

doi:10.1016/j.energy.2018.02.116

Cited by 75 publications

(42 citation statements)

References 41 publications

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“…In comparison, Ni-Co-based OCs show higher stability, which is due to the strong interaction between Co and Ni. Another efficient way to improve sintering resistance is to accommodate the Ni nanoparticles in unique-structure supports such as hydrotalcite, perovskite and montmorillonite [1,[8][9][10]. Nowadays, perovskite-type metal oxides as OCs with a general formula of ABO 3 or A 2 BO 4 have been drawing much attention.…”

Section: Fuel Feedmentioning

confidence: 99%

Hydrogen Production from Chemical Looping Steam Reforming of Ethanol over Perovskite-Type Oxygen Carriers with Bimetallic Co and Ni B-Site Substitution

Sun

Zhang

et al. 2018

Catalysts

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This paper describes the synthesis of a series of La1.4Sr0.6Ni1−xCoxO4 perovskite OCs using co-precipitation method by employing Co and Ni as the B-site components of perovskite and the synergetic effect of Co doping on chemical looping reforming of ethanol. A variety of techniques including N2 adsorption-desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM) and H2 temperature-programmed reduction (TPR) were employed to investigate the physicochemical properties of the fresh and used OCs. The activity and stability in chemical looping reforming were studied in a fixed bed reactor at 600 °C and a S/C ratio of three. The synergetic effect between Ni and Co was able to enhance the catalytic activity and improve the stability of perovskite OCs. La1.4Sr0.6Ni0.6Co0.4O4 showed an average ethanol conversion of 92.4% and an average CO2/CO ratio of 5.4 in a 30-cycle stability test. Significantly, the H2 yield and purity reached 11 wt.% and 73%, respectively. The Co doping was able to significantly improve the self-regeneration capability due to the increase in the number of oxygen vacancies in the perovskite lattice, thereby enhancing the sintering resistance. Moreover, Co promotion also contributes to the improved WGS activity.

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Section: Fuel Feedmentioning

confidence: 99%

Hydrogen Production from Chemical Looping Steam Reforming of Ethanol over Perovskite-Type Oxygen Carriers with Bimetallic Co and Ni B-Site Substitution

Sun

Zhang

et al. 2018

Catalysts

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“…This is because extreme alkaline conditions would lead to irreversible biolm degradation and then biolm detachment from the electrode surface. 24,25 XPS measurements were conducted to investigate chemical compositional information of the used carbon-brush anodes with different treatments. The EDS spectrum of the original carbon-brush anode (MFC-CB) demonstrated the presence of C and O.…”

Section: Surface Characteristics Of the Used Carbon-brush Anodesmentioning

confidence: 99%

Alkaline treatment of used carbon-brush anodes for restoring power generation of microbial fuel cells

et al. 2018

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“…Recent research has revealed that CeO2 exhibits excellent redox property due to abundant oxygen storage capacity and the strong capability to stabilize Ni nanoparticles because of strong metal support interaction (MSI) [15,16]. CeO2 can readily release lattice oxygen under reducing conditions, thus creating oxygen vacancies which are associated with oxygen mobility [17].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production from Chemical Looping Reforming of Ethanol Using Ni/CeO2 Nanorod Oxygen Carrier

Tang

Zheng

et al. 2018

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Chemical looping reforming (CLR) technique is a prospective option for hydrogen production. Improving oxygen mobility and sintering resistance are still the main challenges of the development of high-performance oxygen carriers (OCs) in the CLR process. This paper explores the performance of Ni/CeO 2 nanorod (NR) as an OC in CLR of ethanol. Various characterization methods such as N 2 adsorption-desorption, X-ray diffraction (XRD), Raman spectra, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), H 2 temperature-programmed reduction (TPR), and H 2 chemisorption were utilized to study the properties of fresh OCs. The characterization results show the Ni/CeO 2 -NR possesses high Ni dispersion, abundant oxygen vacancies, and strong metal-support interaction. The performance of prepared OCs was tested in a packed-bed reactor. H 2 selectivity of 80% was achieved by Ni/CeO 2 -NR in 10-cycle stability test. The small particle size and abundant oxygen vacancies contributed to the water gas shift reaction, improving the catalytic activity. The covered interfacial Ni atoms closely anchored on the underlying surface oxygen vacancies on the (111) facets of CeO 2 -NR, enhancing the anti-sintering capability. Moreover, the strong oxygen mobility of CeO 2 -NR also effectively eliminated surface coke on the Ni particle surface.

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Hydrogen production from ethanol steam reforming on Ni-Ce/MMT catalysts

Cited by 75 publications

References 41 publications

Hydrogen Production from Chemical Looping Steam Reforming of Ethanol over Perovskite-Type Oxygen Carriers with Bimetallic Co and Ni B-Site Substitution

Hydrogen Production from Chemical Looping Steam Reforming of Ethanol over Perovskite-Type Oxygen Carriers with Bimetallic Co and Ni B-Site Substitution

Alkaline treatment of used carbon-brush anodes for restoring power generation of microbial fuel cells

Hydrogen Production from Chemical Looping Reforming of Ethanol Using Ni/CeO2 Nanorod Oxygen Carrier

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