Morphology-Controllable Hydrothermal Synthesis of Zirconia with the Assistance of a Rosin-Based Surfactant

Wang, Peng; Liao, Shengliang; Si, Hongbin; Chen, Shangxing; Fan, Guorong; Wang, Zongde

doi:10.3390/app9194145

Cited by 8 publications

(2 citation statements)

References 21 publications

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“…The peak that appeared at 2 θ value of 72.4° is corresponding to ZrO 2 (JCPDS No. 37‐1484) [29]. Moreover, the diffraction peak at 26.5° is assumed also to be related to the formation of SiZrO 4 spinel [28].…”

Section: Resultsmentioning

confidence: 99%

Zirconia–sugarcane bagasse fly ash as a novel solid acid nanocatalyst for selective dehydration of methanol to dimethyl ether

Abd El‐Aal,

Goda,

Abd El‐Wahab

et al. 2024

J Chinese Chemical Soc

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In the current study, two series of catalysts were synthesized and characterized by various physicochemical techniques. In the first series of catalysts, a chemical precipitation method was used for loading 1–20 wt. % ZrO2 on the surface of sugarcane bagasse fly ash (SCBFA) with the goal of finding out the optimal ZrO2 loading. In the second series, the 20% ZrO2/SCBFA composition was modified by (1–10 wt. %) SO42− by wet impregnation method. The acidity of these catalysts was determined through the dehydration of isopropyl alcohol and the chemisorption of pyridine and 2,6‐dimethyl pyridine. The catalytic efficiency for the dehydration of methanol to dimethyl ether (DME) in a fixed‐bed reactor at atmospheric pressure was investigated. A ~ 95% yield toward DME is maximized over the 10% SO42−/20% ZrO2/SCBFA catalyst at a reaction temperature of 400°C. Additionally, it maintained nearly the same efficiency over a 90‐h period and demonstrated outstanding long‐term stability. The specific surface area and the acidity are the most important factors responsible for enhancing the catalytic performance in this reaction. Our study reflects that SCBFA‐supported zirconia and that modified with SO42− are low‐cost, effective, eco‐friendly, and recyclable catalysts that are highly suited to apply for production of DME from methanol.

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Section: Resultsmentioning

confidence: 99%

Zirconia–sugarcane bagasse fly ash as a novel solid acid nanocatalyst for selective dehydration of methanol to dimethyl ether

Abd El‐Aal,

Goda,

Abd El‐Wahab

et al. 2024

J Chinese Chemical Soc

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“…Among the above synthetic approaches, the hydrothermal method is the most universal, since it allows one to obtain nanomaterials with a narrow particle size distribution, high crystallinity, controlled by morphology and microstructure. Varying the pH of the hydrothermal medium and introducing various mineralizers or surfactants can limit crystallite growth along certain crystallographic directions, contributing to the formation of nanostructures of different morphology based on monoclinic zirconia [25][26][27]. ZrO 2 :Eu 3+ nanophosphors with a baddeleyite structure, as far as we know, were obtained only in the form of rods under hydrothermal conditions.…”

Section: Introductionmentioning

confidence: 99%

Phosphors with different morphology, formed under hydrothermal conditions on the basis of ZrO2:Eu3+ nanocrystallites

Bugrov¹,

Smyslov²,

Хамова³

et al. 2019

Nanosystems: Phys. Chem. Math.

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Eu 3+-doped ZrO 2 nanostructures in the form of rods, stars, and hollow spheres were prepared by varying hydrothermal conditions. X-ray diffraction, transmission electron microscopy, ultraviolet-visible diffuse reflection spectroscopy, a low-temperature nitrogen adsorption method, Raman spectroscopy and photoluminescence spectra were used to characterize the polymorph modification, surface and optical properties of the Zr 0.98 Eu 0.02 O 2 nanophosphors. The Eu 3+ content in a zirconia monoclinic lattice, remained constant for all types of obtained nanostructures in order to reveal the morphology influence on the efficiency of electronic excitation energy transfer from the host matrix to photoactive centers. The decrease of the average size of the coherent scattering regions in the series rods → stars → hollow spheres, is associated with increasing the specific surface area values. At that, in the photoluminescence spectrum, the splitting of the sublevels associated with the monoclinic lattice 5 D 0 → 7 F 1 disappears.

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Microwave-based fast synthesis of clear-cut hollow spheres with mesoporous wall of silica nanoparticles as excellent drug delivery vehicles

Abdelaal

Shaikjee

2020

J Nanopart Res

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Morphology-Controllable Hydrothermal Synthesis of Zirconia with the Assistance of a Rosin-Based Surfactant

Cited by 8 publications

References 21 publications

Zirconia–sugarcane bagasse fly ash as a novel solid acid nanocatalyst for selective dehydration of methanol to dimethyl ether

Zirconia–sugarcane bagasse fly ash as a novel solid acid nanocatalyst for selective dehydration of methanol to dimethyl ether

Phosphors with different morphology, formed under hydrothermal conditions on the basis of ZrO2:Eu3+ nanocrystallites

Microwave-based fast synthesis of clear-cut hollow spheres with mesoporous wall of silica nanoparticles as excellent drug delivery vehicles

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