Catalytic steam reforming of n-dodecane over high surface area Ce0.75Zr0.25O2 supported Ru catalysts

Ji, Shuang; Xiao, Zhourong; Zhang, Haocui; Li, Ling; Li, Guozhu; Wang, Li; Liu, Guozhu

doi:10.1016/j.ijhydene.2017.10.085

Cited by 19 publications

(11 citation statements)

References 57 publications

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“…Thus, the production rate of gas product can be calculated according to the content of nitrogen. The conversion of n ‐dodecane, gas production rate were determined by the following equations as our reported literature …”

Section: Methodssupporting

confidence: 67%

“…Moreover, coke deposition happens more easily with the increase of carbon chain length . Therefore, the developing of new catalysts with adequate activity and anti‐coke ability is extremely necessary …”

Section: Introductionmentioning

confidence: 99%

“…21 Therefore, the developing of new catalysts with adequate activity and anti-coke ability is extremely necessary. 22,23 Large scale utilization of nickel-based catalysts in steam reforming has been realized thanks to their high activity for C─C cleavage, good hydrogen selectivity and low cost. 16,17,24,25 However, the sintering of Ni and coke deposition restrict their broad applications.…”

Section: Introductionmentioning

confidence: 99%

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Optimizing the preparation of Ni‐Ce‐Pr catalysts for efficient hydrogen production by n ‐dodecane steam reforming

et al. 2019

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Summary Nowadays, the development of fuel cell is getting more and more inseparable from the production of hydrogen. Long‐chain hydrocarbons steam reforming is a feasible way for hydrogen supply. Herein, various nickel‐ceria‐praseodymium (Ni‐Ce‐Pr) catalysts have been prepared by a sol‐gel method. Multiple parameters during catalyst preparation, including the amount of Ni, the content of doped Pr and the calcination temperature, were systematically studied for tuning the catalytic performance for n‐dodecane steam reforming in a fixed‐bed reactor under 15 mL/gcat·h at 600°C and water‐to‐carbon molar ratio of 2 at 0.1 MPa. Reaction data showed that both the amount of Ni and the content of doped Pr will greatly affect the n‐dodecane conversion and hydrogen production. Additionally, the calcination temperature during catalyst preparation showed a big influence on its performance for n‐dodecane steam reforming. After optimization, 10Ni‐CePr2‐600 exhibits the highest activity and stability for n‐dodecane steam reforming, accompanying with the lowest rate of coke deposition (0.015 gc/gcat·h). The structure and oxygen vacancy of the catalyst was characterized by H2‐TPR, Raman, and X‐ray photoelectron spectroscopy (XPS). The superior activity and stability of 10Ni‐CePr2‐600 are ascribed to the strong interaction between NiO and support along with abundant oxygen vacancies in the Pr‐doped ceria.

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Section: Methodssupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimizing the preparation of Ni‐Ce‐Pr catalysts for efficient hydrogen production by n ‐dodecane steam reforming

et al. 2019

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“…Among these technologies, catalytic steam reforming of hydrocarbons is a dominant way for industrial‐scale hydrogen production on account of its mature technology and low cost . Long‐chain hydrocarbons are considered as the promising feedstock for on‐board hydrogen generation, owing to its good properties in relatively easy transport and high energy density …”

Section: Introductionmentioning

confidence: 99%

“…Several efforts have been devoted to developing new strategies for stabilizing metal nanoparticles against sintering, including the strong metal–support interactions (SMSIs), encapsulation in mesoporous materials, and fixation in zeolites. Experimental and theoretical studies have evidenced the presence of SMSI in the oxide‐supported metal catalysts results in sinter resistance of the catalysts . Xiao et al reported that Pr doped Ni/CeO 2 catalyst showed high catalytic stability in steam reforming of ethanol, which is related to the homogeneous distribution of Ni via SMSI .…”

Section: Introductionmentioning

confidence: 99%

Selective steam reforming of n‐dodecane over stable subnanometric NiPt clusters encapsulated in Silicalite‐1 zeolite

et al. 2020

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Multimetallic nanocatalysts have attracted increasing attention for steam reforming owing to highly exposed active sites, but often suffering from severe sintering. Herein, we design subnanometric Ni‐Pt bimetal clusters (ca. 1.7 nm) encapsulated in Silicalite‐1 zeolite (2Ni0.5Pt@S‐1) through ligand‐stabilized method to prevent sintering by fixing the metal into microporous channels. In the steam reforming of n‐dodecane test, 2Ni0.5Pt@S‐1 gave an excellent activity and stability with a decrease of conversion only 4% at 600°C for 4 hr, which was about a quarter that of 2Ni0.5Pt/S‐1 synthesized by co‐impregnation method, ascribing to superior sinter‐resistance of encapsulation structure. Moreover, 2Ni0.5Pt@S‐1 exhibited a higher H2 selectivity up to 69.9% than that of 2Ni0.5Pt/S‐1 (64.4%), owing to suppressed methanation reaction based on subnanometric clusters. Shape‐selective steam reforming of n‐dodecane and ofm‐xylene was also observed, because of m‐xylene could hardly diffuse into the zeolite channels due to its bulky molecular size, further preventing potential deactivation by tars in reforming process.

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Promotion of Rh-based La2Zr2O7 type catalysts with the transition metals to improve sulfur-tolerance in diesel reforming

Li,

Luo,

Liu

et al. 2024

Applied Catalysis A: General

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Catalytic steam reforming of n-dodecane over high surface area Ce0.75Zr0.25O2 supported Ru catalysts

Cited by 19 publications

References 57 publications

Optimizing the preparation of Ni‐Ce‐Pr catalysts for efficient hydrogen production by n ‐dodecane steam reforming

Optimizing the preparation of Ni‐Ce‐Pr catalysts for efficient hydrogen production by n ‐dodecane steam reforming

Selective steam reforming of n‐dodecane over stable subnanometric NiPt clusters encapsulated in Silicalite‐1 zeolite

Promotion of Rh-based La2Zr2O7 type catalysts with the transition metals to improve sulfur-tolerance in diesel reforming

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