Preparation of molecular sieve from natural pyrophyllite and characterization of its Al/Si ratio, crystal structure, and Porosity

Idiawati, Riris; Fuad, Abdulloh; Mufti, Nandang; Hartatiek,; Bahtiar, Syamsul; Subakti,; Taufiq, Ahmad

doi:10.1088/1742-6596/853/1/012037

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The gibbsite layer (G) in pyrophyllite has the same structure as the gibbsite, but four oxygens have replaced four hydroxides from the silicate layers (S). Pyrophyllite's overall structure can be thought stacked S-G-S sandwiches (Das and Mohanty, 2009;Idiawati et al, 2017;Ravindra et al, 2016). In Saudi Arabia, pyrophyllite occurs mainly in the city of Yanbu in the Al-Madinah Al-Munawwarah province of western Saudi Arabia.…”

Section: Roofingmentioning

confidence: 99%

Chemical and Mineralogical Characterization of Saudi-Pyrophyllite ore and its Potential Applications

Ali

2021

AGJSR

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Purpose: Due to the importance of pyrophyllite as an economical alternative to several minerals such as kaolin, talc, and feldspar in different industrial applications, there is an intention in Saudi Arabia to exploit pyrophyllite in the industry. Since there were no sufficient studies conducted to characterize pyrophyllite in Saudi Arabia, this paper aims to study the chemical and mineralogical characterization of Saudi pyrophyllite ore grades and propose its potential applications besides proposing beneficiation strategies for the low-grade one. Method: In this study, two different grades pyrophyllite ore samples, from a pyrophyllite deposit in western Saudi Arabia, were characterized for their potential applications. Microscopic studies, X-ray fluorescence (XRF), scanning electron microscope coupled with energy dispersive X-ray (SEM-EDX), X-ray diffraction (XRD) were used for chemical and mineralogical characterization of the studied samples. Results: Microscope and XRD results have shown that the ore samples (labeled grade A and grade B) consist mainly of pyrophyllite associated with quartz and feldspar in addition to minor amounts of muscovite, chlorite, and siderite as impurity minerals. Moreover, the results indicated that the impurities are oxide and sulfide minerals (i.e., pyrite, hematite). According to XRF analysis results, grade A contains high alumina (27.03% Al2O3) and low iron (0.4% Fe2O3) whereas; grade B contains a high iron content (2.06% Fe2O3) and lower alumina (24.05 % Al2O2). It is predicted that the grade A with high alumina content can be used directly in fillers, refractories, fiberglass, whiteware ceramics, white cement, porcelain, and cosmetic applications. As for grade B, high iron content limits its industrial applications. Therefore, it needs to be treated to remove ferrous impurities before supply to pyrophyllite market. Conclusion: Based on analytical results, grade A with high alumina content can be used directly in fillers, refractories, fiberglass, whiteware ceramics, white cement, porcelain, and cosmetic applications. Furthermore, grade B needs to upgrade due to high iron content before being used in the industry.

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Section: Roofingmentioning

confidence: 99%

Chemical and Mineralogical Characterization of Saudi-Pyrophyllite ore and its Potential Applications

Ali

2021

AGJSR

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“…Pyrophyllite is often used extensively in manufacturing refractories, ceramics, insulators, rubber fillers, paper, paints, and porous materials [2]. Pyrophyllite (Al2Si4O10(OH)2) has a high silica content between 60-82% [3]. The high silica content in Pyrophyllite can provide potential as a source of silica (SiO2) for the manufacture of advanced materials.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Methods of Silica Extraction from Pyrophyllite Rocks Using Sol-Gel versus Alkali Fusion Method

Fanani Hidayatulloh,

Santoso

2024

E3S Web Conf.

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Silica is the most abundant compound on the Earth’s surface. The content of silica can be found in agricultural waste ash and mineral rocks. Extracting silica from natural sources is advantageous due to its economic feasibility and easily obtained. Silica has a wide range of applications, such as in fertilizers, adsorbents, organic reaction catalysis, biofuels/alternative energy production, and as an antimicrobial agent. One type of rock that contains the highest amount of silica is Pyrophyllite. Recent research trends have focused on various methods and sources for silica extraction, yet extracting silica from mineral rocks presents its own challenges. Pyrophyllite rock contains a high amount of silica, but its extraction is quite difficult due to the presence of crystalline silicate mineral phases. This study aims to compare the silica extraction process on Pyrophyllite rocks from Malang using the sol-gel method versus the alkali fusion method.

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“…Previously, studies related to PVA/Chitosan/PEG/HAp nanofibers using the electrospinning method had been reported by researchers with variations in HAp composition with limited study characteristics [26]. The work is the basis for this research, namely to further examine the effect of DBD plasma treatment on the morphology, wettability, and rate of degradation of PVA/Chitosan/PEG/HAp nanofibers.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of PVA/Chitosan/PEG/HAp nanofiber scaffolds by plasma treatment and studies of their morphology, wettability, and biodegradation rate

Hartatiek¹,

Wuriantika²,

Amalia³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Nanofiber scaffold has been widely developed as a tissue engineering material because it can imitate the ECM of bones. In this study, nanofiber scaffold is composed of polyvinyl alcohol (PVA), chitosan, polyethylene glycol (PEG), and hydroxyapatite (HAp) which have superior characteristics for tissue engineering applications. The nanofiber scaffold is synthesized using electrospinning. Experimental results show that dielectric barrier discharge (DBD) plasma treatment causes increased surface roughness, contributing to the improvement of surface wettability. This is indicated by a decrease in this contact angle from 9.92° to 1.74°. In addition, DBD plasma treatment also increased biodegradation as well as increased treatment time.

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Preparation of molecular sieve from natural pyrophyllite and characterization of its Al/Si ratio, crystal structure, and Porosity

Cited by 3 publications

References 4 publications

Chemical and Mineralogical Characterization of Saudi-Pyrophyllite ore and its Potential Applications

Chemical and Mineralogical Characterization of Saudi-Pyrophyllite ore and its Potential Applications

Eco-Friendly Methods of Silica Extraction from Pyrophyllite Rocks Using Sol-Gel versus Alkali Fusion Method

Surface modification of PVA/Chitosan/PEG/HAp nanofiber scaffolds by plasma treatment and studies of their morphology, wettability, and biodegradation rate

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