Extraction of high purity amorphous silica from rice husk by chemical process

Ajeel, Sami A.; Sukkar, Khalid A.; Zedin, Naser Korde

doi:10.1088/1757-899x/881/1/012096

Cited by 23 publications

(5 citation statements)

References 11 publications

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“…This is consistent with previous studies that amorphous silica has a hump between 15 to 35 o of 2θ [19][20][21]. This result is also in accordance with the standard pattern of silica in the Standards Joint Committee on Powder Diffraction (JCPDS) [10]. The highest peak occurred at 2θ at 22.03 o with the highest intensity of 1920.…”

Section: Xrd Analysissupporting

confidence: 92%

“…Products from silica processing are widely used for ceramics, cement, paper, rubber, glass, foundry, oil and mining industries as well as refractories [1][2][3]. In the current technological era, silica with high purity in the form of amorphous phase and nano size, has been utilizing for the electronics industry, bitumen, composite industry, polymers, insulators, catalysts, solar cells, absorbent materials, battery industry, special optics and other special materials [4][5][6][7][8][9][10]. In 2015, approximately 70 % of amorphous silica demand was supplied from synthetic silica which was produced by precipitation process [11].…”

Section: Introductionmentioning

confidence: 99%

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Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 ^oC

Prasetyo¹,

Handayani²,

Sulistiyono³

et al. 2022

J. Phys.: Conf. Ser.

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Silica in amorphous form is one of the fillers that is indispensable for the industrial world, especially for the superior material industry. Amorphous silica in the form of cristobalite compounds are inert, soft, and have high porosity which is suitable to be used as certain filler materials. This research describes about the characterization of amorphous silica produced from the pyrolysis process of emulsifier silicon. The pyrolysis process was carried out in three-stages, starting from the separation of water, separation of the emulsifier material from silica compound at a temperature of 300oC followed by pyrolysis at a temperature of 700 oC. In this process, amorphous silica and carbon are formed at the end of the pyrolysis process. In this study, characterization was carried out using XRD to determine the phase of the composition of the compound, SEM EDX to determine the morphology, and XRF analysis to determine the purity of product composition. The results of the XRD shows that the amorphous silica formed. SEM-EDX analysis shows that the amorphous silica has spherical fine grain with average particle size 0.30006 ± 0.01722 |am. It was supported by XRF analysis that shows that the amorphous silica has SiO2 content 99,92%.

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Section: Xrd Analysissupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 ^oC

Prasetyo¹,

Handayani²,

Sulistiyono³

et al. 2022

J. Phys.: Conf. Ser.

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“…respectively. This result is an agreement with researches [14][15][16]. The relationship between the degree of purity for extraction SiO 2 NPs and NaOH concentration is show in Fig.…”

Section: Xrf Analysissupporting

confidence: 92%

Extraction High Purity Nanosilica Corn Cob by Modified Precipitation Technique

Ajeel

Sukkar

Zedin

2021

Preprint

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Corn cob considers the agricultural waste in Iraq. High purity SiO2NPs were extracted from corn cob by enhanced precipitation and developed leaching processes. In this study, pre-treatment with 3N HCl has achieved then calcination of the corn cob at 700°C, then follows with the leaching process with (2, 2.5, 3)N NaOH. The characterizations of the prepared SiO2NPs were analyzed with atomic force microscopy (AFM), and X-ray fluorescence (XRF). The results were found that the prepared SiO2NPs have an amorphous structure with a high purity of 97.13 %. Also, the AFM results indicated that the average diameter of the SiO2NPs was 85 nm. It was noted that the leaching processes and pretreatment methods determine the structure, particle size, and quality of the synthesized SiO2NPs.

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“…The first synthesis of MCM-41 was achieved using TEOS as a silica source [45]. Other silicasource developed in the synthesis of M41S members include ethyl silicate [46], fumed silica [47][48], silica gel and sodium silicate [49][50], silica sol [48], bagasse fly ash [51], iron ore tailing [52] and rice husk ash [53][54][55]. Notably, the silica source is one of the costliest factors.…”

Section: -Syntheses Of M41smentioning

confidence: 99%

Synthesis, Characterizations, and Recent Applications of the Silica-based Mobil Composition of Mesoporous Material: A Review

Kurji,

Mujtaba,

Abbas

2023

IJCPE

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Silica-based mesoporous materials are a class of porous materials with unique characteristics such as ordered pore structure, large surface area, and large pore volume. This review covers the different types of porous material (zeolite and mesoporous) and the physical properties of mesoporous materials that make them valuable in industry. Mesoporous materials can be divided into two groups: silica-based mesoporous materials and non-silica-based mesoporous materials. The most well-known family of silica-based mesoporous materials is the Mesoporous Molecular Sieves family, which attracts attention because of its beneficial properties. The family includes three members that are differentiated based on their pore arrangement. In this review, the major applications of the Mobil Mesoporous Molecular Sieves family, such as catalysts, adsorbents, and drug delivery agents, have been surveyed. Furthermore, the synthesis of the Mesoporous Molecular Sieves materials, the silica sources, the importance of templates, and the mechanisms of the synthesis are discussed herein. Members of this material family are characterized by many physicochemical properties that are closely related to their high silica content, crystalline structure, and pore arrangement. Commonly, the members of this family have large surface areas, high pore volumes, small pore sizes, and narrow and uniform particle size distributions. These properties enable numerous industrial applications and opportunities for scientific studies to further develop existing materials or manufacture new ones.

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Extraction of high purity amorphous silica from rice husk by chemical process

Cited by 23 publications

References 11 publications

Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 ^oC

Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 ^oC

Extraction High Purity Nanosilica Corn Cob by Modified Precipitation Technique

Synthesis, Characterizations, and Recent Applications of the Silica-based Mobil Composition of Mesoporous Material: A Review

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Extraction of high purity amorphous silica from rice husk by chemical process

Cited by 23 publications

References 11 publications

Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 oC

Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 oC

Extraction High Purity Nanosilica Corn Cob by Modified Precipitation Technique

Synthesis, Characterizations, and Recent Applications of the Silica-based Mobil Composition of Mesoporous Material: A Review

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Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 ^oC

Development of high purity amorphous silica from emulsifier silicon by pyrolysis process at temperature of 700 ^oC