Upgrading of liquid fuel from fast pyrolysis of biomass over modified Ni/CNT catalysts

Zhou, Minghao; Tian, Le; Niu, Lei; Liu, Cong; Xiao, Guomin; Xiao, Rui

doi:10.1016/j.fuproc.2014.04.015

Cited by 56 publications

(29 citation statements)

References 33 publications

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“…Additionally, the amount of superficial NiO species increase when the Ni-loading amount increases. To some extent, higher temperature is required for the reduction of more NiO particles, which is in agreement with previous study [41].…”

Section: Resultssupporting

confidence: 92%

Selective hydrogenation of furfural to tetrahydrofurfuryl alcohol over Ni/CNTs and bimetallic Cu Ni/CNTs catalysts

Liu

Chen

2016

International Journal of Hydrogen Energy

135

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Section: Resultssupporting

confidence: 92%

Selective hydrogenation of furfural to tetrahydrofurfuryl alcohol over Ni/CNTs and bimetallic Cu Ni/CNTs catalysts

Liu

Chen

2016

International Journal of Hydrogen Energy

135

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“…Figure 1 shows the XRD patterns of two different samples, including solo CNT, and the optimal catalyst in the system for the hydrogenation of phenol. The peak at 26.5 • could be assigned to the diffraction peaks of the (002) planes of the graphite-like tube-wall of the CNT [30][31][32]. Apart from the CNT feature, the presence of metallic Ni in the reduced 20% Ni/CNT catalyst was clearly revealed.…”

Section: Methodsmentioning

confidence: 97%

“…Peaks at 44.5°, 51.9°, and 76.4° could be assigned to the diffraction of the (111), (200), and (220) planes of metallic Ni [27], indicating that only metallic nickel species were observed in Ni/CNT catalyst. Figure 2b, perhaps it was due to the presence of oxygen-containing groups of CNT during the HNO3 preprocessing [30,31]. In addition, the oxidation of Ni/CNT catalyst before or during the XPS examination could also lead to the presence of oxygen element.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Selective Hydrogenation of Phenol to Cyclohexanol over Ni/CNT in the Absence of External Hydrogen

et al. 2020

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Transfer hydrogenation is a novel and efficient method to realize the hydrogenation in different chemical reactions and exploring a simple heterogeneous catalyst with high activity is crucial. Ni/CNT was synthesized through a traditional impregnation method, and the detailed physicochemical properties were performed by means of XRD, TEM, XPS, BET, and ICP analysis. Through the screening of loading amounts, solvents, reaction temperature, and reaction time, 20% Ni/CNT achieves an almost complete conversion of phenol after 60 min at 220 °C in the absence of external hydrogen. Furthermore, the catalytic system is carried out on a variety of phenol derivatives for the generation of corresponding cyclohexanols with good to excellent results. The mechanism suggests that the hydrogenation of phenol to cyclohexanone is the first step, while the hydrogenation of cyclohexanone for the generation of cyclohexanol takes place in a successive step. Moreover, Ni/CNT catalyst can be magnetically recovered and reused in the next test for succeeding four times.

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“…The Ni-HPW/CNT catalyst was prepared by an impregnation method. 22,23 The CNT support was pre-treated in acids to improve the purity of raw CNT and introduce hydrophilic groups (such as OH and COOH) to the CNT surface to absorb metals. A typical process was as follows.…”

Section: Preparation Of Catalystmentioning

confidence: 99%

A Clean Hydroprocessing of Jatropha Oil into Biofuels over a High Performance Ni-HPW/CNT Catalyst

Yang

Liu

et al. 2017

NANO

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The nickel (Ni) and phosphotungstic acid (HPW) supported on carbon nanotubes (CNT) were prepared by impregnation method for hydroprocessing of Jatropha oil. The Ni-HPW/CNT catalyst was characterized by XRD, XPS, FT-IR, N2 adsorption-desorption, SEM, NH3-TPD, and TGA. The effects of reaction parameters, such as reaction temperature (280–400[Formula: see text]C), time-on-stream (0–100[Formula: see text]h), types of support, the amount of added HPW, and coking deposition were investigated. The cracking performance was evaluated by gas chromatography (GC). The yield of C15–C18 alkanes was 88.5[Formula: see text]wt.%, Iso/n ratio was 0.8 and conversion was 97.7% at 320[Formula: see text]C, 3.0[Formula: see text]MPa and 1.0/h over the Ni-HPW/CNT catalyst, while the yield of [Formula: see text] alkanes reached 51.9[Formula: see text]wt.% at 400[Formula: see text]C. The distribution of products could be adjusted by reaction temperature. The cracking performance was elevated by the addition of HPW and the electrical conductivity. The C15–C18 alkanes were further cracked through two cracking circulations. Meanwhile, the catalyst was used without sulfurization and the cracking process was green.

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Upgrading of liquid fuel from fast pyrolysis of biomass over modified Ni/CNT catalysts

Cited by 56 publications

References 33 publications

Selective hydrogenation of furfural to tetrahydrofurfuryl alcohol over Ni/CNTs and bimetallic Cu Ni/CNTs catalysts

Selective hydrogenation of furfural to tetrahydrofurfuryl alcohol over Ni/CNTs and bimetallic Cu Ni/CNTs catalysts

Selective Hydrogenation of Phenol to Cyclohexanol over Ni/CNT in the Absence of External Hydrogen

A Clean Hydroprocessing of Jatropha Oil into Biofuels over a High Performance Ni-HPW/CNT Catalyst

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