Transesterification of Coconut Oil Using Dimethyl Carbonate and TiO2/SiO2 Heterogeneous Catalyst

Pandiangan, Kamisah Delilawati; Simanjuntak, Wasinton

doi:10.22146/ijc.21325

Cited by 19 publications

(16 citation statements)

References 24 publications

(28 reference statements)

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“…The filtrate was taken out and measured by UV-Vis at 464 nm. This experiment was then repeated for different concentrations of MO (10,20,30,40 and 50 mg/L) and pH (2,3,4,5,6,7,8). As a reference, TiO 2 powder (bulk) was also used for the photocatalytic process using the same conditions.…”

Section: Photocatalytic Decolorization Of Methyl Orange (Mo) By Tio 2mentioning

confidence: 99%

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Photocatalytic Decolorization Study of Methyl Orange by TiO<sub>2</sub>–Chitosan Nanocomposites

Fajriati¹,

Mudasir²,

Wahyuni³

2014

Indones. J. Chem.

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The photocatalytic decolorization of methyl orange (MO) ABSTRAK Telah dilakukan studi reaksi dekolorisasi metil orange (MO) terkatalisis nanokomposit TiO 2 -kitosan. Studi diawali dengan sintesis nanokomposit TiO 2 -kitosan menggunakan metode sol gel dengan variasi konsentrasi titanium (IV) isopropoksida (TTIP) sebagai prekursor. Struktur, morfologi, sifat termal dan optis dikarakterisasi menggunakan X-ray diffraksi (XRD), Fourier transform infra red (FTIR) spektroskopi, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), dan diffuse reflectance ultra violet (DRUV) spektroskopi. Aktivitas fotokatalitik nanokomposit TiO

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Section: Photocatalytic Decolorization Of Methyl Orange (Mo) By Tio 2mentioning

confidence: 99%

“…A number of host materials have been used as supporting agent for TiO 2 immobilization, such as resin [5], zeolite [6], active carbon [7], silica [8] and fiberglass [9]. The resulted materials are usually quite rigid, expensive and not environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Decolorization Study of Methyl Orange by TiO<sub>2</sub>–Chitosan Nanocomposites

Fajriati¹,

Mudasir²,

Wahyuni³

2014

Indones. J. Chem.

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“…Thus for photocatalytic application, TiO 2 has been modified into a layer of film or immobilized on inorganic materials such as zeolite (Wijaya et al, 2006), silica (Shiraishi et al, 2009), resins (Wahyuni et al, 2010), activated carbon (Andayani and Sumartono, 2007) and glass fiber (Pandiangan and Simanjuntak, 2013), as well as organic material such as polyurethane (Burgess, 2007) and chitosan (Chen et al, 2010;Qian et al, 2011;Zainal et al, 2009;Nawi et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The Effect of pH and Aging Time on the Synthesis of TiO2 – Chitosan Nanocomposites as Photocatalyst by Sol-Gel Method at Room Temperature

Fajriati

Mudasir

Wahyuni

2017

Molekul

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The synthesis of TiO 2 -chitosan nanocomposite photocatalyst using Titanium(IV)-Isopropoxide (TTIP) as precursors and chitosan as host material has been conducted. The synthesis was carried out using a sol-gel method at room temperature and aging to grow crystal seeds and generate nanoparticles. The success of forming nano-sized anatase phase TiO 2 nanocrystal was strongly influenced by the sol pH system during hydrolysis and the aging time. The effect of sol pH system and aging time to the crystallinity level and particle size were examined using X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and Diffuse Reflectance UV-Spectroscopy (DR-UV). The results showed that TiO 2 produced in acidic pHs (pH 2-4) tended to have higher crystallinity level than that produced in weakly alkaline (pH > 6), which prone to be amorphous. The longer aging time (> 14 days) also tended to produce the amorphous phase. Furthermore, chitosan as a host material had a notable influence in determining the crystallinity level and particle size of TiO 2 in TiO 2 -chitosan nanocomposite.

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“…In addition to its high purity, rice husk silica is known as porous and amorphous material 3,4 , which makes it a suitable raw material for production of various silica based materials. Taking advantage of these characteristics, many researchers are currently engaged in exploration of rice husk silica potential, and a wide range of its applications has been reported in literatures, such as production of nanosilica 4,5 , silica gel 6,7 , carbosil 8 , heterogeneous catalysts [9][10][11][12] , aluminosilicates 13 , synthetic zeolites [14][15][16] , and ceramics [17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

The use of Liquid Smoke as A Substitute for Nitric Acid for Extraction of Amorphous silica from Rice husk through Sol-Gel Route

Simanjuntak¹,

Sembiring²,

Kamisah³

et al. 2016

Orient. J. Chem

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This study assessed the potential of liquid smoke as substitute for nitric acid for production of rice husk silica using sol-gel method. The efficacy of liquid smoke was compared to that of 10% HNO 3 solution in terms of the volume required and the mass of silica obtained. Further evaluation was made by comparing the characteristics of the silica as revealed by several characterization techniques include Fourier infrared spectroscopy, x-ray diffraction, scanning electron microscopy, and particle size analysis. No significant difference between the volume of the liquid smoke and the HNO 3 solution required, as well as between the mass of silica obtained. Both samples display practically similar functionality and structure. The most interesting finding is that the silica obtained using liquid smoke exhibits more homogeneous surface morphology and narrower particle size distribution. Considering its environmentally friendly nature, it was concluded that liquid smoke is more advantageous than HNO 3 solution.

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Transesterification of Coconut Oil Using Dimethyl Carbonate and TiO2/SiO2 Heterogeneous Catalyst

Abstract: ABSTRACT

Cited by 19 publications

References 24 publications

Photocatalytic Decolorization Study of Methyl Orange by TiO<sub>2</sub>–Chitosan Nanocomposites

Photocatalytic Decolorization Study of Methyl Orange by TiO<sub>2</sub>–Chitosan Nanocomposites

The Effect of pH and Aging Time on the Synthesis of TiO2 – Chitosan Nanocomposites as Photocatalyst by Sol-Gel Method at Room Temperature

The use of Liquid Smoke as A Substitute for Nitric Acid for Extraction of Amorphous silica from Rice husk through Sol-Gel Route

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