Synthesis and characterization of high silica HY zeolite by basicity reduction

Ayad, Zahraa M.; Hussein, Hussein Q.; Al-Tabbakh, Ban A.

doi:10.1063/5.0000278

Cited by 12 publications

(4 citation statements)

References 10 publications

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“…The BF-Y showed 20.37% of weight loss at (34 -200°С), and the MBF-Y showed 13.46% at(34 -200°С) . Results of the first weight loss suggest that the hydrophobicity of MBF-Y increased(Ayad, Hussein, & Al-Tabbakh, 2020). This suggestion is in good agreement with our expectations.…”

supporting

confidence: 92%

Synthesis of a New Adsorbent Based on the Mild Dealuminated Binder Free Granular Y Zeolite

Ahmed

Mohammed

2023

SJUOZ

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This study investigates, for the first time, the effects of dealumination of binder-free NaY type zeolite on the adsorption properties and porous structure characteristics. In this study, BF-Y zeolite was hydrothermally synthesized from kaolin and powder NaY. BF-Y was then treated with acid to increase Si/Al ratio. X-ray Diffraction (XRED), Thermal Gravimetric Analysis (TGA), Scanning Electron Microscope (SEM), and Energy Dispersive X-Ray (EDX) have been performed for the characterization. The modified zeolite granules MBF-Y were used as an adsorbent for the removal of methylene blue MB dye from water. The influence of initial MB concentration, contact time, temperature, and adsorbent dosage on adsorption capacity and dye removal percentage on MBF-Y was investigated. The maximum dye removal was attained at a concentration of (8 * 10-6 M) which was more than 93%, and an equilibrium contact time of 60 minutes. Well-known adsorption isotherms (Langmuir, Fruendlich, and Tempkin) were used to study the adsorption mechanism of MB onto MBF-Y.

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confidence: 92%

Synthesis of a New Adsorbent Based on the Mild Dealuminated Binder Free Granular Y Zeolite

Ahmed

Mohammed

2023

SJUOZ

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“…Both PW 12 /ZHY and Ni-PW 12 /ZHY experienced weight loss in two steps in which the initial weight loss corresponds to the loss of adsorbed water molecules and the final weight loss is due to the elimination of crystalline water molecules from the Keggin unit. Furthermore, the stabilities of PW 12 /ZHY and Ni-PW 12 /ZHY were observed up to 550 °C with no further weight loss. − …”

Section: Resultsmentioning

confidence: 91%

Cascade Upgrading of Furfural to Alkyl Levulinate over Ni Exchanged Supported 12-Tungstophosphoric Acid: Concerted Effects of Lewis/Brønsted Acidic Sites

Patel,

Chauhan

2024

Energy Fuels

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The new insights toward the cascade synthesis of isopropyl levulinate (i-PL), an important biofuel additive and precursor to the highly valued γ-valerolactone (GVL), from bioderived furfural (FA) via Meerwein−Ponndorf−Verley (MPV) reduction followed by alcoholysis were studied. For that, a sustainable catalyst nickel exchanged 12-tungstophosphoric acid anchored to zeolite HY was synthesized and characterized by different techniques such as FTIR, UV−vis−NIR, TGA, BET, XRD, 31 P NMR, HRTEM, EDX, and XPS. The total acidity as well as types of acidity was studied by NH 3 -TPD and pyridine FTIR. The catalyst exhibited its exceptional performance to attain 72% yield of i-PL which successfully implied the strategy of "say no to external H-source" leading to a remarkable turnover number (1385). The sustainable features of the catalyst were boosted by its regeneration and reuse. The comparison study highlighted the superiority of the catalyst in terms of employing a non-noble metal as well as the highest yield of the desired product. The reaction pathway was also proposed on the basis of control experiments.

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“…Capping agent trimethylethoxysilane (TMES) was introduced in dual step sol-process to produce nanosilicon powder by TEOS in 2-propanol aqueous solution and acid as catalyst [90]. High silicon zeolite material was prepared by a sol-gel method that can enhance acidity, thermal and hydrothermal stability, and catalytic activity with the presence of sulfuric acid [91]. Single-phase of amorphous silicon with average particle size 22 nm was derived from a sol-gel solution using alkaline extraction route of agriculture waste for cement free high alumina castable [92].…”

Section: Production Of Nanostructured Siliconmentioning

confidence: 99%

Potential of nanosilicon dioxide extraction from silicon-rich agriculture wastes as a plant growth promoter

Ibrahim¹,

Meng²,

Alipour³

et al. 2022

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Agriculture waste has attracted attention as a potential source to produce raw material silicon dioxide, either crystalline (pyrophyllite) or amorphous form (geothermal sludge). It is an unwanted waste produced as a desired result of agricultural activities. Nanosilicon dioxide has undoubtedly gained eager interest in many vital industries. It is renowned for positively enhancing outstanding performance due to tuneable properties over its bulk counterpart. Silicon dioxide scientifically demonstrates a unique ability to convert efficiently into economic value from silicon-rich agriculture waste. Thus, a noble extraction from silicon-rich waste is undoubtedly gaining enormous attention. However, adequate knowledge on local optimisation of nanosilicon dioxide extraction from silicon-rich agriculture waste is lacking. Specific aims of this comprehensive review mainly highlighted a synthesis method of potential nanostructured silicon dioxide from agriculture waste and their potential applications for plant growth promoters. Reverse microemulsion, chemical vapour condensation, solid gelation, and mechanochemical are preferred methods that were typically specified to focus this comprehensive review critically. Optimisation of nanosilicon dioxide can be achieved precisely via the ideal combination of solid gelation and a high-energy ball mill process. Silicon dioxide is undoubtedly an effective agent as a plant growth promoter to overcome biotic and abiotic factors such as heavy metal uptake and translocation, inhibit pathogenic fungi, improve the antioxidant system, and mitigate various stress factors.

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Synthesis and characterization of high silica HY zeolite by basicity reduction

Cited by 12 publications

References 10 publications

Synthesis of a New Adsorbent Based on the Mild Dealuminated Binder Free Granular Y Zeolite

Synthesis of a New Adsorbent Based on the Mild Dealuminated Binder Free Granular Y Zeolite

Cascade Upgrading of Furfural to Alkyl Levulinate over Ni Exchanged Supported 12-Tungstophosphoric Acid: Concerted Effects of Lewis/Brønsted Acidic Sites

Potential of nanosilicon dioxide extraction from silicon-rich agriculture wastes as a plant growth promoter

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