Effect of Drying Conditions on the Characteristics and Performance of B/Fe2O3 Nano-Composites Prepared by Sol-Gel Method

Date

2020-01-01

Author

Yilmaz, Nil Ezgi Dincer
Karakaş, Gürkan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

176
views

0
downloads

B/Fe2O3 samples were prepared by mixing nano sized boron powder with iron oxide xerogels that had been synthesized using a sol-gel method that included various types of proton scavengers such as 1,2-epoxybutane, tetrahydrofuran, 1,4-dioxane and ammonium hydroxide. The effects of the proton scavengers and drying conditions on the textural properties of the iron oxide samples and on the heat output and thermal behavior of the nano-composites were examined. The iron oxide samples were subjected to direct drying (DD) or sequential solvent exchange (SSE). The heat output values of the B/Fe2O3 nano-composites varied from 240 to 1200 J/g depending on the drying condition and the proton scavenger used. It was found that the thermal behaviour and the textural properties of B/Fe2O3 nano-composites (such as porosity, surface area and crystallinity) could be tailored by both the drying conditions and the proton scavenger used.

Subject Keywords

Nano-composite, Pyrotechnic, Sequential solvent exchange, Proton scavenger, Heat output, Energetic materials, Boron

URI

https://hdl.handle.net/11511/33043

Journal

CENTRAL EUROPEAN JOURNAL OF ENERGETIC MATERIALS

DOI

https://doi.org/10.22211/cejem/118837

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Effect of the number of cycles on the optical and structural properties of Mn3O4 nanostructures obtained by SILAR technique BAYRAM, ÖZKAN; Simsek, Onder; GÜNEY, HARUN; İĞMAN, ERDAL; Ozer, Mustafa Murat (Springer Science and Business Media LLC, 2018-06-01) In this study, nanostructured Mn3O4 (manganese oxide) thin films were successfully obtained by successive ionic layer adsorption and reaction (SILAR) method on the soda lime glass substrates using Manganese Nitrate (Mn(NO3)(2)) and Ammonium hydroxide (NH4(OH)) as cationic and anionic precursors respectively. Structural and morphological characterizations of the Mn3O4 films obtained at different cycles were determined using X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The crystal structure...
Effects of boron compound on characteristics of poly(methyl methacrylate) and its nanocomposites Göktaş, Müberra; Hacaloğlu, Jale; Yılmaz, Ayşen; Department of Polymer Science and Technology (2016) In this work, composites of poly(methyl methacrylate) and benzene-1,4diboronic acid (BDBA) and their nanocomposites with organically modified montmorillonite OMMT prepared by solution and melt mixing, were characterized to study effects of boron content and the preparation method on the properties of PMMA. SEM images showed homogeneous dispersion of BDBA particles for the melt blended, whereas, agglomeration for the solution mixed PMMA/BDBA composites. XRD and TEM results of PMMA nanocomposites indicated th...
Effect of operating parameters on selective separation of heavy metals from binary mixtures via polymer enhanced ultrafiltration Muslehiddinoglu, J; Uludağ, Yusuf; Ozbelge, HO; Yılmaz, Levent (Elsevier BV, 1998-03-18) Performance of continuous polymer enhanced ultrafiltration (PEUF) method was investigated for removal of mercury and cadmium from binary mixtures. This method includes the addition of polyethyleneimine (PEI) as a water soluble polymer to bind the metals, which was followed by ultrafiltration operation performed on both laboratory and pilot scale systems. The influence of various operating parameters such as temperature, metal/polymer ratio, presence of calcium ions and pH on retention of metals and permeate...
Effect of preparation parameters on the performance of conductive composite gas separation membranes Gulsen, D; Hacarloglu, P; Toppare, Levent Kamil; Yılmaz, Levent (2001-02-15) Mixed matrix composite membranes of a conducting polymer, polypyrrole (PPy), and an insulating polymer, polybisphenol-A-carbonate (PC) were prepared by a combined in-situ polymerization and solvent evaporation. Mixed matrix composite membranes were synthesized to combine the good gas transport properties of conductive polymer, PPy, with good mechanical properties of PC.
Effect of stabilizer type on the activity and stability of water-dispersible cobalt(0) nanocluster catalysts in hydrogen generation from the hydrolysis of sodium borohydride Metin, Onder; Koçak, Ebru; ÖZKAR, SAİM (Springer Science and Business Media LLC, 2011-08-01) Hydrogen phosphate (HPO4 2−) or poly(acrylic acid) (PAA) stabilized cobalt(0) nanoclusters were in situ generated from the reduction of cobalt(II) chloride during the catalytic hydrolysis of sodium borohydride (NaBH4) in the presence of stabilizers, HPO4 2− or PAA. Cobalt(0) nanoclusters stabilized by HPO4 2− or PAA were characterized by using UV–Visible spectroscopy, TEM, XPS and FT-IR techniques. They were employed as catalysts in the hydrolysis of NaBH4 to examine the effect of stabilizer type on their c...

Citation Formats

N. E. D. Yilmaz and G. Karakaş, “Effect of Drying Conditions on the Characteristics and Performance of B/Fe2O3 Nano-Composites Prepared by Sol-Gel Method,” CENTRAL EUROPEAN JOURNAL OF ENERGETIC MATERIALS, pp. 85–106, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33043.