Interaction between Kaolin and Urea in Organoclay and Its Impact on Removing Methylene Blue from Aqueous Solution

Husssein, Sabri M.; Shihab, Omar H.; Ibrahim, Sattar S.; Ahmed, Naser M.

doi:10.4236/wjnse.2015.51001

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…The presence of KF is identified from the reflection at around 30 o from KF25/KAO and KF30/KAO due to high content of KF loaded [14,15]. Some new reflections are [16,17]. Similar dealumination and fluorination formed K 2 FeF 4 caused by KF modification were reported from the modification of montmorillonite [9,18].…”

Section: Resultsmentioning

confidence: 79%

Effect of KF Modification to Kaolinite Catalytic Activity in Microwave-Assisted Biodiesel Conversion

Fatimah

Rubiyanto²,

Yudha³

2018

Egypt. J. Chem.

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REPARATION of reusable catalyst based on KF-modified kaolinite clay for reusable catalyst application on biodiesel conversion has been investigated. Materials preparation were carried out by simple mixing and solid reaction between KF and kaolinite at various KF loading. The effect of KF content loaded the surface structure and surface basicity have been studied. Characterization of the materials was investigated based on scanning electrone microscopy-energy dispersive-x ray spectroscopy (SEM-EDX) SEM, x-ray diffraction (XRD) and gas sorption analysis. Increasing the reusability and the effectivity of catalysts utilization was studied by comparing reflux method and microwave (MW)-assisted reaction of biodiesel production from Jatropha oil. Results showed that increasing solid basicity is the character plays important role in increasing catalytic activity in biodiesel conversion. By comparing the reaction method, it is found that similar biodiesel yield was obtained with shorter time, higher turnover frequency (TOF) and better reusability over MW assisted-method. Refer to yield and TOF of compared reactions, KF content of 25% for kaolinite modification is the optimum concentration to produce biodiesel.

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Section: Resultsmentioning

confidence: 79%

Effect of KF Modification to Kaolinite Catalytic Activity in Microwave-Assisted Biodiesel Conversion

Fatimah

Rubiyanto²,

Yudha³

2018

Egypt. J. Chem.

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Synergistic effect of talc/calcined kaolin binary fillers on rigid PVC: Improved properties of PVC composites

Mallem

Zouai

Gumus

et al. 2021

Vinyl Additive Technology

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This study aims to develop poly(vinyl chloride) (PVC) composites prepared by melt mixing by using a combination of talc and calcined kaolin as filler in order to improve the disadvantages of rigid PVC, which is widely used in industry, such as poor mechanical properties and low thermal stability. In addition, PVC/talc and PVC/calcined kaolin composites were also examined for comparison. The calcined kaolin is modified with urea to increase the surface area (chemical treatment), while the surface of both fillers is coated with stearic acid for good compatibility with PVC (mechanical treatment). Scanning electron microscopy micrographs showed homogeneous distribution of mechanically processed fillers. Attenuated total reflectance-Fourier-transform infrared spectroscopy analysis revealed successful coating of the fillers with stearic acid. Also, new bands were detected in the spectrum of urea-treated calcined kaolin, showing an effective chemical treatment. It has been observed that the treatment of fillers improves the mechanical properties of PVC. Thermogravimetric results showed that delaminated calcined kaolin increased the thermal stability of PVC composites. The results of this study proved that binary filler composites combine good properties of both (synergistic effect) and good filler dispersion can be obtained by using stearic acid and urea.

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Study on synergistic expansion and flame retardancy of modified kaolin to low density polyethylene

Liu

et al. 2021

Polymer

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Interaction between Kaolin and Urea in Organoclay and Its Impact on Removing Methylene Blue from Aqueous Solution

Cited by 4 publications

References 10 publications

Effect of KF Modification to Kaolinite Catalytic Activity in Microwave-Assisted Biodiesel Conversion

Effect of KF Modification to Kaolinite Catalytic Activity in Microwave-Assisted Biodiesel Conversion

Synergistic effect of talc/calcined kaolin binary fillers on rigid PVC: Improved properties of PVC composites

Study on synergistic expansion and flame retardancy of modified kaolin to low density polyethylene

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