نتایج جستجو برای: free xerogel

تعداد نتایج: 514214  

Journal: :Sustainability 2023

Sugarcane leaves were used to produce high-purity and low-density silica xerogels through a sol–gel method. The biogenic produced thermochemical method was reacted with sodium hydroxide (NaOH) form silicate the titrated 1 M citric acid gel. formed gel washed, subjected solvent exchange process later dried at 80 °C xerogels. characterized energy dispersive X-ray spectroscopy (EDX), diffraction (...

Journal: :Journal of Taibah University for Science 2022

This manuscript describes the preparation and characterization of silica-nickel oxide (SiO2-NiO) xerogel nanocomposite its catalytic application in hydrogenation p-nitrophenol. Hydrochloric acid ammonium hydroxide were used as base catalyst, respectively during synthesis SiO2-NiO. The Fourier Transformation Infra-Red spectroscopic results supported formation silica skeleton structure with corre...

Journal: :Fuel Processing Technology 2021

The gelation of a low value-added industrial waste, phenolic oil (PO), was successfully carried out for the first time in presence an acid catalyst and paraformaldehyde (PF), which is by-product formaldehyde industry. Therefore, use PO PF can be considered win-win situation as attempt to valorise these ‘wastes’ integrate them into circular economy. A broad range formulations has been explored, ...

2003
A. Parvathy Rao A. Venkateswara Rao

Sol–gel process was used for the preparation of Rhodamine 6G (R6G) doped silica xerogels, using tetraethylorthosilicate [TEOS, Si(OC2H5)4] as the precursor for the silica network. Silica alcosol was prepared by hydrolysis and polycondensation of ethanol (EtOH) diluted TEOS in the presence of citric acid (CTA) catalyst. The ethanolic R6G was added to the alcosol to trap R6G molecules inside the ...

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