Y-Zr-O solid solution supported Ni-based catalysts for hydrogen production via auto-thermal reforming of acetic acid

Hu, Xiaomin; Yang, Jin; Sun, Wenjing; Wang, Ning; An, Shuang; Wang, Qiao; Xie, Xingyue; Huang, Lihong

doi:10.1016/j.apcatb.2020.119264

Cited by 33 publications

(29 citation statements)

References 80 publications

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“…Above this value, the surface area began to reduce. Similar behaviour was reported by Hu et al, in their research on hydrogen production using Ni supported on Y-Zr-O solid solution [27].…”

Section: Surface Area and Porosity Measurementsupporting

confidence: 88%

Dry Reforming of Methane with Ni Supported on Mechanically Mixed Yttria-Zirconia Support

et al. 2022

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This study focuses on CH4 reforming with CO2 over Ni supported on yttria mixed with zirconia support. Different loading of yttria was used to enhance the performance of Ni towards achieving the optimum activity. The physicochemical properties of both fresh calcined and used catalysts were studied using a range of characterization techniques. The specific surface area measurement by the BET method showed a progressive increase in the area with an increase in yttria loading. The monoclinic (m- ZrO2) and tetragonal (t- ZrO2) phases were identified on all the samples by the XRD analysis. A reduction in the intensity of m- ZrO2 was observed on adding Ni to the catalysts while the diffraction pattern of crystalline yttria was not identified. The reducibility analysis showed the influence of yttria. It induces the formation of NiYO3 species with stronger active metal-support interaction. From the catalytic test, 5Ni/10Y-Z-3215 had the highest feed conversion of about 68 and 88% for CH4 and CO2 respectively. The TEM analysis showed a uniform dispersion of NiO particles over the mixed yttria-zirconia support with no agglomeration of the active metal particles after the reaction. The measurement of the quantity of carbon deposits by the TGA revealed that the increase in yttria loading enhanced the gasification of carbon deposits with 5Ni/20Y-Z-3215 recording the lowest weight loss of about 28%. Graphical Abstract

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“…Above this value, the surface area began to reduce. Similar behaviour was reported by Hu et al, in their research on hydrogen production using Ni supported on Y-Zr-O solid solution [27].…”

Section: Surface Area and Porosity Measurementsupporting

confidence: 88%

Dry Reforming of Methane with Ni Supported on Mechanically Mixed Yttria-Zirconia Support

et al. 2022

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“…A Y-Zr-O solid solution has also been reported by Hu et al [21], and the active species of Ni 0 were highly dispersed in the Y-Zr-O solid solution, providing high catalytic activity and stability at a high temperature near 700 °C. The structural defects of the solid solution not only increased the specific surface area to provide the active sites for conversion of HAc but also effectively inhibited sintering of the Co metal in the ATR process [22].…”

Section: Introductionmentioning

confidence: 65%

“…For the CZ catalyst without Pr, there were strong diffraction peaks of monoclinic ZrO 2 (m‐ZrO 2 ) (PDF#: 37‐1484) along with relatively weak peaks of the tetragonal phase of ZrO 2 (t‐ZrO 2 ) (PDF#: 50‐1089), while peaks of Co 3 O 4 spinel (PDF#: 42‐1467) were found as well. Over the CZP5, CZP10, and CZP30 catalysts with both Pr and Zr, there were peaks of the solid solution of Zr x Pr 1–x O y (PDF#: 04‐006‐1369), which can be attributed to the incorporation of Pr 3+ ions into the t‐ZrO 2 phase 21, 24; meanwhile, cobalt species in Co 3 O 4 were found over the solid solution. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Zr_xPr_1–xO_y Solid Solution‐Supported Cobalt‐Based Catalysts for Hydrogen Production

et al. 2022

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To obtain high yields of hydrogen, a series of Zr x Pr 1-x O y -supported cobalt catalysts were synthesized by the sol-gel method and tested in autothermal reforming (ATR) of acetic acid (HAc) derived from bio-oil. X-ray diffraction, nitrogen physisorption, H 2 -temperature-programmed reduction, and thermogravimetric analysis were conducted to investigate the factors affecting the activities of the catalysts. Over the Co-Zr-Pr-O catalyst, a Zr x Pr 1-x O y solid solution was formed after calcination; meanwhile, the active component of Co 0 was highly dispersed over the solid solution after reduction in hydrogen for 1 h at 700 °C. As a result, stable reactivity was recorded in the ATR process of HAc: the hydrogen yield reached 2.58 mol H2 mol À1HAc with near 100 % HAc conversion, while better resistance to coking was observed.

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“…The conversion of bio-oil obtained via the fast pyrolysis of biomass and its subsequent catalytic steam reforming has been regarded as a feasible and economical route for hydrogen production [11]. Acetic acid is the main component of bio-oil (up to 33%) and its reforming as a bio-oil representative compound has been widely investigated [12]. Bio-based acetic acid steam reforming processes (AcOH-SR) are a potential approach for hydrogen production, which can be directly used in oxide fuel cells or further treated to generate electricity in proton exchange membrane fuel cells [13].…”

Section: Introductionmentioning

confidence: 99%

On the Support Effect and the Cr Promotion of Co Based Catalysts for the Acetic Acid Steam Reforming

et al. 2021

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This work focuses on the support effect of the performances of Co based catalysts for acetic acid steam reforming. SBA-15, a well ordered hexagonal mesoporous silica structure, and CeO2 have been selected as the supports, with the impact of chromium addition also being investigated. Better acetic acid steam reforming performances have been recorded for CeO2 compared to SBA-15 supported catalysts and, in particular, the 7Co/CeO2 catalyst showed the highest values of acetic acid conversions with enhanced H2 yields below 480 °C, in comparison to the other investigated catalytic formulations. In addition, more pronounced coke depositions and acetone concentrations have been obtained with CeO2 supported catalysts, due to the tendency of ceria to catalyse the ketonization reaction. Chromium addition to Co/SBA-15 catalysts led to an enhancement in the activity towards acetic acid steam reforming, while on CeO2 supported catalysts no improvement in the catalysts’ activity was observed. However, on both SBA-15 and CeO2 supported catalysts, Cr addition reduced the amount of coke deposited on the catalysts surface.

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Y-Zr-O solid solution supported Ni-based catalysts for hydrogen production via auto-thermal reforming of acetic acid

Cited by 33 publications

References 80 publications

Dry Reforming of Methane with Ni Supported on Mechanically Mixed Yttria-Zirconia Support

Dry Reforming of Methane with Ni Supported on Mechanically Mixed Yttria-Zirconia Support

Zr_xPr_1–xO_y Solid Solution‐Supported Cobalt‐Based Catalysts for Hydrogen Production

On the Support Effect and the Cr Promotion of Co Based Catalysts for the Acetic Acid Steam Reforming

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Y-Zr-O solid solution supported Ni-based catalysts for hydrogen production via auto-thermal reforming of acetic acid

Cited by 33 publications

References 80 publications

Dry Reforming of Methane with Ni Supported on Mechanically Mixed Yttria-Zirconia Support

Dry Reforming of Methane with Ni Supported on Mechanically Mixed Yttria-Zirconia Support

ZrxPr1–xOy Solid Solution‐Supported Cobalt‐Based Catalysts for Hydrogen Production

On the Support Effect and the Cr Promotion of Co Based Catalysts for the Acetic Acid Steam Reforming

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Zr_xPr_1–xO_y Solid Solution‐Supported Cobalt‐Based Catalysts for Hydrogen Production