Al grafted natural hydroxyapatite for neem oil transesterification: Kinetic study at optimal point

Sahu, Himadri; Mohanty, Kaustubha

doi:10.1016/j.cej.2015.06.040

Cited by 18 publications

(4 citation statements)

References 39 publications

(59 reference statements)

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“…ZnO was deposited on WNH by wet impregnation method which is described in our earlier published work . However, in the present work ZnSO 4 was used as metal precursor and the pH was maintained at 6.0 by 25 % aqueous sulphuric acid solution.…”

Section: Methodsmentioning

confidence: 99%

“…WNH , calcined WNH ( CWNH : 650 °C calcination temperature), and WNH‐Zn , were readied for the comparison purpose during peroxidation. The characterization of the materials was carried out using an X‐ray diffractometer (Bucker D8 Advance), an Excalibur Bio‐Rad spectrophotometer for FTIR analysis, a surface analyzer (Beckman‐Coulter; SA3100), a NETZSCH (STA449F3 Jupiter) thermal analyzer, and a field emission scanning electron microscope (Model: JEOL‐JSM‐6390LV), EDAX PV 9760 …”

Section: Methodsmentioning

confidence: 99%

“…Parameter WNH CWNH WNH-Zn CFWB-HAp-Al [12] Mg-NHAp [19] BET surface area 10 However, WNH-Zn was prepared at 650 8C, which leads to the further degradation in TGA profile. The additional mass loss was due to the removal of all the organic compounds present in the core of the sample.…”

Section: Methodsmentioning

confidence: 99%

“…The characterization of the materials was carried out using an X-ray diffractometer (Bucker D8 Advance), an Excalibur Bio-Rad spectrophotometer for FTIR analysis, a surface analyzer (Beckman-Coulter; SA3100), a NETZSCH (STA449F3 Jupiter) thermal analyzer, and a field emission scanning electron microscope (Model: JEOL-JSM-6390LV), EDAX PV 9760. [12] Peroxidation Quantification and Characterization of Pure Neem Oil (PNO) Crude neem oil was collected from a local shop. The oil was passed through a sieve to remove solid floating materials.…”

Section: Impregnation Of Zn On Waste Fish Bonementioning

confidence: 99%

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One pot peroxidation of oleic acid rich Azadirachta indica oil over bio‐waste derived heterogeneous catalyst

Sahu

Mohanty

2017

Can J Chem Eng

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In this work, a heterogeneous catalyst was developed from waste fish bone. ZnO was deposited onto the waste fish bone to enhance the surface properties along with ion exchangeability. After characterization, the developed catalyst was found to have a much higher surface area (217 m2 · g−1) than that of raw fish bone (10 m2 · g−1). This catalyst was used during peroxidation of oleic acid rich Azadirachta indica oil (neem oil) to observe its suitability and efficiency. A quadratic model was developed with five input variables (temperature (T), time (t), g/g of catalyst (HZn), H2O2:oil ratio (γH:FA), formic acid:oil ratio (γF:FA)) and 2 output variables (Iodine value, Oxirane Oxygen Conversion). The optimized parametric values for T, t, HZn, γH:FA, and γF:FA were found to be 60 °C, 3.88 h, 20 g/g, 19.05:1, and 19.85:1 respectively. The final epoxidized oil was characterized using FTIR and 1HNMR. The reusability of the catalyst was studied both quantitatively and qualitatively.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%