The performance of Co/ZrO2–Al2O3 composite oxide catalyst for CH4/CO2 reforming reaction

Zhang, Xiaohong; Hu, Ruijue; Liu, Ya-Feng; Zhao, Jianwen; Hou, Liang; Yang, Dan; Hao, Zhuomin; Su, Haiquan

doi:10.1016/j.ijhydene.2015.06.076

Cited by 17 publications

(9 citation statements)

References 29 publications

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“…The γ‐Al 2 O 3 was prepared via hydrothermal treatment as previously described elsewhere 20 . Briefly, 0.215 M Al(NO 3 ) 3 aqueous solution was mixed with 0.093 M CTAB aqueous solution (Al 2 O 3 /CTAB molar ratio of 2/1).…”

Section: Methodsmentioning

confidence: 99%

“…80 to 150 m 2 /g, 22 compared to that prepared via hydrothermal treatment, which has a surface area of ca. 202 m 2 /g 20 …”

Section: Introductionmentioning

confidence: 99%

“…202 m 2 /g. 20 Therefore, this research aims to improve the quality of WTPO by removing PAHs via hydrogenation to provide the cleaner alternative fuels together with the minimization of WT to support the circular economy concept following the sustainable development goals launched by United Nation. 23 This research focused on the comparative study of the efficiency of Ni-supported γ-Al 2 O 3 catalysts with and without the addition of Mo-, W-, or Pt-promoters in the hydrogenation of naphthalene, used as the model PAH for those PAHs mostly found in WTPO.…”

Section: Introductionmentioning

confidence: 99%

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Production of cleaner waste tire pyrolysis oil by removal of polycyclic aromatic hydrocarbons via hydrogenation over Ni‐based catalysts

Kingputtapong

Chanlek

Poo‐arporn

et al. 2022

Intl J of Energy Research

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Summary This research aimed to improve the quality of waste tire pyrolysis oil (WTPO) via hydrogenation to eliminate polycyclic aromatic hydrocarbons (PAHs), which are classified as toxic compounds or precursors to induce the formation of particulate matter. Given the presence of organosulfurous compounds in WTPO, this research was consisted of two steps. First, the hydrogenation of naphthalene, a model PAH compound, was used to screen for suitable promoters [molybdenum (Mo), tungstate (W), and platinum (Pt)] for nickel‐supported gamma‐alumina (Ni/γ‐Al2O3) catalyst to provide a high sulfur tolerance and high PAH hydrogenation efficiency. Second, the obtained suitable catalysts were applied for the hydrogenation of 50 wt% WTPO solution in decane containing 15 982 ppm PAHs and a 0.75 wt% sulfur content. Although the NiPt/γ‐Al2O3 catalyst exhibited the highest performance with 83.8% naphthalene conversion under 40 bar initial H2 pressure at 350°C for 6 hours, it was less tolerant to the presence of thiophene, one of the organosulfurous compounds found in WTPO. Thus, the NiMo/γ‐Al2O3 and NiW/γ‐Al2O3 catalysts were selected for WTPO hydrogenation. The PAHs hydrogenation and hydrodesulfurization occurred simultaneously in both catalytic systems. Under 50 bar initial H2 pressure at 350°C, the NiMo/γ‐Al2O3 catalyst had a higher ability for hydrodesulfurization (98.4% maximum sulfur removal) than hydrogenation of PAHs (66.0% removal of PAHs), whereas NiW/γ‐Al2O3, with lower acidity, showed a preference for hydrogenation of PAHs (71.1% removal of PAHs) with a lower hydroisomerization efficiency (74.2% sulfur removal). Moreover, the chemical structure of PAHs affected the ability to be eliminated by hydrogenation. PAHs having unsubstituted rings could be easily hydrogenated, while the removal of PAHs containing alkyl substituents in both aromatic rings required severe reaction conditions due to their high steric hindrance for adsorption onto the catalyst active sites.

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Section: Methodsmentioning

confidence: 99%

“…80 to 150 m 2 /g, 22 compared to that prepared via hydrothermal treatment, which has a surface area of ca. 202 m 2 /g 20 …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production of cleaner waste tire pyrolysis oil by removal of polycyclic aromatic hydrocarbons via hydrogenation over Ni‐based catalysts

Kingputtapong

Chanlek

Poo‐arporn

et al. 2022

Intl J of Energy Research

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“…First reduction peak of the Co/ZrO 2 catalyst at around 400 C can be attributed to the reduction of Co 3+ to Co 2+ . Reduction of Co 2+ to metallic Co began after 600 C and showed a maximum peak at 873 C. [58,59] On the other hand, the Co-Cu/ZrO 2 catalyst showed three distinct reduction peaks, at 262 C, 324 C, and 560 C, respectively. The first peak can be attributed to the reduction of Cu 2+ to Cu 0 , the second peak to the reduction of Co 3+ to Co 2+ , and the third peak to the reduction of Co 2+ to Co 0 , respectively.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Furfural hydrogenation to 2‐methylfuran over efficient sol‐gel copper‐cobalt/zirconia catalyst

2021

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2-Methylfuran (MF) is a candidate to be a high-quality fuel additive. For the first time, efficient Co-Cu/ZrO 2 catalysts were prepared by the sol-gel method and herein used for MF synthesis from furfural. Although a 9.2% MF yield and no MF was obtained using Cu/ZrO 2 and Co/ZrO 2 , respectively, a 77.5% MF yield was observed at 200 C, under 1.5 MPa initial H 2 pressure for 4 hours using a Co-Cu/ZrO 2 catalyst. The Co amount was changed in the catalyst structure and the effect of the Co amount on furfural hydrogenation was investigated. The most effective catalyst was the Co-Cu/ZrO 2 catalyst, with 0.08 g/g (8 mass%) Cu and 0.118 g/g (11.8 mass%) Co. The activity tests of the catalysts were carried out for hydrogenation of furfural to MF by changing reaction parameters such as pressure, loading of catalyst, temperature, and time. A 94.1% MF yield was achieved in the presence of the Co-Cu/ZrO 2 catalyst with 0.08 g/g (8 mass%) Cu and 0.118 g/g (11.8 mass%) Co at 200 C for 6 hours under 1.5 MPa H 2 pressure. The catalyst also showed good reusability properties after the fifth use. The catalysts were characterized by Brunauer-Emmet-Teller method, X-ray diffraction, X-ray photoelectron spectroscopy, and temperature programmed reduction techniques.

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“…Тонкие наногранулированные пленки, содержащие наночастицы ферромагнетика (Со, Fe, Ni), распределенные в полупроводниковой либо диэлектрической матрице на основе оксидов металлов (In 2 O 3 , TiO 2 , SnO 2 , Al 2 O 3 , ZrO 2 , и пр.) характреризуются уникальной совокупностью магнитных и электрических свойств и перспективной для применения в устройствах спинтроники, высокоплотной магнитной памяти [1,2], термоэлектрических преобразователях [3], сенсорах магнитного поля [4], катализе [5], медицине [6] и т. д. Особое значение приобретают также поиски недорогих и эффективных способов получения подобных структур. На сегодняшний день известны и широко применяются как физические [7][8][9], так и химические [5,10,11] методы получения тонкопленочных нанокомпозитов.…”

Section: Introductionunclassified

Структурные и магнитные характеристики однослойных и многослойных наногранулированных пленок Co-Al-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-, полученных методом твердофазного синтеза

Волочаев¹,

Комогорцев²,

Мягков³

et al. 2018

Физика Твердого Тела

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Представлены результаты структурных и магнитных исследований наногранулированных пленок Co−Al 2 O 3 , формирующихся из тонкопленочных слоистых Co 3 O 4 /Al структур в процессе вакуумного отжига. Пленки Co3O4/Al получены последовательным реактивным магнетронным распылением мишени металлического кобальта в среде, состоящей из смеси газов Ar + O 2 и магнетронным распылением алюминиевой мишени в среде чистого аргона. Показано, что такой подход позволяет получать тонкие однослойные и многослойные наногранулированные пленки Co−Al 2 O 3 с хорошо контролируемым размером магнитных гранул и их распределением по толщине пленки. Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта № 16-03-00069. Исследование выполнено при финансовой поддержке Российского фонда фундаментальных исследований, Правительства Красноярского края, Красноярского краевого фонда науки в рамках научного проекта: " Исследование коэффициента теплопроводности и структурных особенностей в тонких наноструктурированных оксидных пленках, перспективных для термоэлектрического применения".

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The performance of Co/ZrO2–Al2O3 composite oxide catalyst for CH4/CO2 reforming reaction

Cited by 17 publications

References 29 publications

Production of cleaner waste tire pyrolysis oil by removal of polycyclic aromatic hydrocarbons via hydrogenation over Ni‐based catalysts

Production of cleaner waste tire pyrolysis oil by removal of polycyclic aromatic hydrocarbons via hydrogenation over Ni‐based catalysts

Furfural hydrogenation to 2‐methylfuran over efficient sol‐gel copper‐cobalt/zirconia catalyst

Структурные и магнитные характеристики однослойных и многослойных наногранулированных пленок Co-Al-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-, полученных методом твердофазного синтеза

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