Hydrogen from acetic acid as the model compound of biomass fast-pyralysis oil over Ni catalyst supported on ceria–zirconia

Zheng, Xiaoxiao; Yan, Changfeng; Hu, Ruilin; Li, Juan; Hai, Hang; Luo, Weimin; Guo, Chaozhong; Li, Wenbo; Zhou, Zhou-yu

doi:10.1016/j.ijhydene.2012.05.067

Cited by 42 publications

(13 citation statements)

References 27 publications

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“…Also, the effect of catalyst on conversion and distribution of the pyrolysis products has been studied (Zheng et al, 2012;Gopakumar et al, 2012;Shao et al, 2010;Zeng et al, 2013;Guo et al, 2012). To date, there have been few studies on the catalytic pyrolysis of microalgae, where zeolites were mainly the catalysts of choice (Gopakumar et al, 2012;Harman-Ware et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Aysu

Sanna

2015

Bioresource Technology

101

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Section: Introductionmentioning

confidence: 99%

“…Also, the addition of Ni improved both conversion and selectivity of hydrogen (Zheng et al, 2012). Ni promoted steam reforming reactions and retarded the rate of carbon deposition onto the catalyst surface (Basagiannis and Verykios, 2006).…”

Section: Introductionmentioning

confidence: 99%

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Aysu

Sanna

2015

Bioresource Technology

101

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“…Depending on biomass feedstock and pyrolysis conditions employed, the composition of bio-oil is varied but mainly consists of oxygenated hydrocarbons, such as acids, ketones, alcohols, phenols and sugars [2,3]. In order to get a better understanding of the chemical process during steam reforming of the whole bio-oil, a number of studies have focused on steam reforming of bio-oil model compounds [4][5][6][7][8], especially acetic acid (HAc) [9][10][11][12][13][14] due to its high content in bio-oil.…”

Section: Introductionmentioning

confidence: 99%

Nickel catalyst auto-reduction during steam reforming of bio-oil model compound acetic acid

Cheng

Dupont

2013

International Journal of Hydrogen Energy

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Transition metal catalysts widely used in refineries are provided as oxides and require pre-reduction to become activated. The auto-reduction of a NiO/Al 2 O 3 catalyst with acetic acid (HAc) followed by HAc steam reforming was investigated in a packed bed reactor. Effects of temperature and molar steam to carbon ratio (S/C) on reduction kinetics and catalyst performance were analysed. Results showed that a steady steam reforming regime along with complete NiO reduction could be obtained after a coexistence stage of reduction and reforming. A 2D nucleation and nuclei growth model fitted the NiO auto-reduction. The maximum reduction rate constant was attained at S/C=2. Steam reforming activity of the auto-reduced catalyst was just below that of the H 2 -reduced catalyst, probably attributed to denser carbon filament formation and larger loss of active Ni. Despite this, a H 2 yield of 76.4% of the equilibrium value and HAc conversion of 88.97% were achieved at 750 °C and S/C=3.

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“…The best performance was reported over 12 and 7.5 wt% Ni and Ce loading respectively, with water/bio oil ratio of 4.9 at 800 °C exhibiting highest hydrogen yield. Similarly Zheng et al [66] examined the use of 12 wt% Ni supported on Ce-ZrO2 catalyst obtained using the CP method, in SRA at 650 °C with S/C of 3. An optimum Ce content of 7.5 wt% was reported, similar to Yan et al [54], but the optimum results were obtained at 650 °C in comparison to 800 °C.…”

Section: Steam Reforming Of Oxygenated Hydrocarbonsmentioning

confidence: 99%

“…Vagia and Lemonidou [65] defined hydrogen yield along with Yan et al [54] and Zheng et al [66] who defined hydrogen selectivity as below…”

Section: Appendix Amentioning

confidence: 99%

Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria–zirconia supported catalysts: Review

Nahar

Dupont

2014

Renewable and Sustainable Energy Reviews

102

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The use of ceria-zirconia based catalysts in hydrogen production from simple alkanes and oxygenated hydrocarbons for the processes of steam reforming (SR), autothermal reforming ('ATR'), catalytic partial oxidation ('CPO'), and dry reforming ('DR') are reviewed in this paper. Along with preparation methods, the effects of operating conditions like molar steam to carbon ratio, oxygen to carbon ratio, and temperature on the performance of hydrogen production from methane, acetic acid, ethanol, and glycerol were examined. SR and ATR of these feedstocks over ceria-zirconia supports have been widely investigated. In comparison the utilization of these supports in the CPO and DR processes has been investigated mainly for methane as compared to oxygenated hydrocarbons. Ce-rich supports were reported to be effective in hydrogen from SR and ATR of ethanol and glycerol and in SMR in the 'low' temperature range (500-600 °C), whereas zirconium-rich supports exhibited higher catalytic activity in the 'high' temperature range (700-800 °C). In the case of DR, Ce-rich supports were effective at high temperature. The methods of preparation of the supports/catalyst are shown to affect the surface area (catalyst/support), crystallite size of (active metal/support), reducibility and dispersion of the active metal, thus affecting performance of the catalyst.

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Hydrogen from acetic acid as the model compound of biomass fast-pyralysis oil over Ni catalyst supported on ceria–zirconia

Cited by 42 publications

References 27 publications

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Nickel catalyst auto-reduction during steam reforming of bio-oil model compound acetic acid

Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria–zirconia supported catalysts: Review

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