Structural Characterization of Ni/ZrO<sub>2</sub>/SiO<sub>2</sub> Nanocomposites Prepared by Wet Impregnation Route

Ulfa, Siti Mariyah; Prihartini, Dita; Taufiq, Ahmad

doi:10.1088/1757-899x/515/1/012014

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…This result revealed that the amorphous structure of SiO 2 has been transformed into crystalline one after the sulfation process. Similar phenomena were observed when the Ni was impregnated on ZrO 2 /SiO 2 system [28]. The peak that appeared at 2 θ value of 72.4° is corresponding to ZrO 2 (JCPDS No.…”

Section: Resultssupporting

confidence: 74%

“…With the incorporation of SO 4 2− on the 20% ZrO 2 /SCBFA catalyst, the monoclinic phase of ZrO 2 (2 θ = 28.3°) completely disappeared, and new seven peaks appeared at 2 θ values of 20.7°, 26.5°, 36.3°, 50.1°, 59.2°, 68.1°, and 72.4°. The first six peaks are attributed to (100), (011), (110), (112), (121), and (031) planes of trigonal structure of α‐SiO 2 , respectively [28]. This result revealed that the amorphous structure of SiO 2 has been transformed into crystalline one after the sulfation process.…”

Section: Resultsmentioning

confidence: 99%

“…37‐1484) [29]. Moreover, the diffraction peak at 26.5° is assumed also to be related to the formation of SiZrO 4 spinel [28]. On the other hand, the average crystallite sizes of the prepared catalysts were also calculated using Scherrer equation [30].…”

Section: Resultsmentioning

confidence: 99%

“…The chemical composition of the raw SCBFA calcined at 400 C obtained by XRF is tabulated in 011), ( 110), ( 112), (121), and (031) planes of trigonal structure of α-SiO 2 , respectively [28]. This result revealed that the amorphous structure of SiO 2 has been transformed into crystalline one after the sulfation process.…”

Section: Characterization Of the Catalystsmentioning

confidence: 99%

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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: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Characterization Of the Catalystsmentioning

confidence: 99%

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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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Ultra-high surface area fibrous silica-zirconia support for renewable energy production by CO2 methanation

Hatta,

Jalil,

Hassan

et al. 2023

Molecular Catalysis

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Toward Low-Symmetry Systems: An Adaptive Differential Evolution Algorithm for Global Structure Searching

Zhang

Wang

Ouyang

et al. 2022

J. Phys. Chem. Lett.

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The reduction in the symmetry of nanomaterials can produce unexpected properties, while the determination of atomic structures is a sizable challenge in related fields, including low-dimensional materials, surface science, defects, etc. Herein, we develop an adaptive algorithm based on the differential evolution algorithm, which provides benefits for structure searching on low-symmetry systems. The dynamic strategy pool and the island concept are proposed to accelerate the efficiency in the full search space. With several test examples, the designed program not only locates reported structures but also affords new stable configurations that were not located by previous structure search algorithms. Moreover, we provide frameworks and interfaces for stable structure searching on complex systems like grain boundaries, supported clusters, surfaces, and edges. The success in repeatable structure searching with high efficiency demonstrates the reliability and practicability of our algorithm and ensures its potential applications as an advanced technology in many newly arising fields.

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Structural Characterization of Ni/ZrO₂/SiO₂ Nanocomposites Prepared by Wet Impregnation Route

Cited by 5 publications

References 15 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

Ultra-high surface area fibrous silica-zirconia support for renewable energy production by CO2 methanation

Toward Low-Symmetry Systems: An Adaptive Differential Evolution Algorithm for Global Structure Searching

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Structural Characterization of Ni/ZrO2/SiO2 Nanocomposites Prepared by Wet Impregnation Route

Cited by 5 publications

References 15 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

Ultra-high surface area fibrous silica-zirconia support for renewable energy production by CO2 methanation

Toward Low-Symmetry Systems: An Adaptive Differential Evolution Algorithm for Global Structure Searching

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Product

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Structural Characterization of Ni/ZrO₂/SiO₂ Nanocomposites Prepared by Wet Impregnation Route