Production of boron nitride by carbothermic and mechanochemical methods, and nanotube formation

Camurlu, HE
Aydogdu, A
Topkaya, Yavuz Ali
Sevinc, N
The formation of hexagonal boron nitride by carbothermic reduction of boron oxide and nitridation has been examined. Experiments were conducted in the temperature range of 1100-1500degreesC for durations between 15-240 minutes. Products were examined by X-ray, SEM and chemical analysis. The results showed that the reaction proceeds through a gaseous boron containing species, which is most probably 13203(g). It was found that all of the carbon was consumed and formation of boron nitride was complete in 2 hours at 1500degreesC.


Production of boron nitride using chemical vapor deposition method
Mercan, Özge; Özbelge, Önder; Sezgi, Naime Aslı; Department of Chemical Engineering (2014)
Boron nitride is a promising material with its outstanding characteristics like chemical inertness, large band gap, high oxidation resistance and thermal conductivity. It is also used as ceramic matrix component which transfers external load and deflects matrix cracks. Therefore, it has become a subject matter for many studies. In this study, the process of boron nitride (BN) production from diborane (B2H6) and ammonia (NH3) on tungsten (W) substrate in impinging jet reactor is investigated using chemical v...
Bilgin, Nursev; Agartan, Lutfi; PARK, JONGEE; Öztürk, Abdullah (2014-10-16)
Titania (TiO2) nanostructures were produced via hydrothermal method using amorphous TiO2 powders synthesized by the sol-gel precipitation process. The hydrothermal system was isolated from the environment and hydrothermal reactions were allowed to execute at 130 degrees C for 36 h at autogeneous pressure, and at a stirring rate of 250 rpm. Scanning electron microscopy (SEM) analysis revealed that TiO2 nanofibers formed instead of nanotubes upon utilization of amorphous TiO2 precursor. After hydrothermal syn...
Synthesis of CuO nanostructures on zeolite-Y and investigation of their CO2 adsorption properties
Boruban, Cansu; Nalbant Esentürk, Emren (2017-10-01)
Copper(II) oxide (CuO) nanoparticles (NPs) in two different morphologies, spiky and spherical, were synthesized on zeolite-Y by a modified impregnation method, and their CO2 adsorbing capabilities were investigated under standard conditions (1 atm and 298 K). The properties and CO2 adsorption performances of the hybrid systems were characterized by transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray, X-ray diffraction, X-ray photoelectron spectroscopy, atomic absorption s...
Synthesis of boron nitride nanotubes from ammonia and a powder mixture of boron and iron oxide
Ozmen, Didem; Sezgi, Naime Aslı; BALCI, FATMA SUNA (2013-03-01)
Boron nitride nanotubes (BNNTs) were synthesized from the reaction of ammonia gas with a powder mixture of boron and iron oxide in a tubular reactor connected to a mass spectrometer for the on-line chemical analysis of the reactor outlet stream at different temperatures and inlet gas compositions. XRD results showed that hexagonal and rhombohedral boron nitrides, iron, boron oxide, and iron boride were the solid phases formed in these materials depending on the reaction temperature and gas composition. It w...
Synthesis of boron and zirconium co-doped titanium dioxide nanopowders by the sol-gel technique /
Ağartan, Lütfi; Öztürk, Abdullah; Park, Jongee; Department of Metallurgical and Materials Engineering (2014)
Effects of water/Ti precursor molar ratio (R ratio) and calcination regime on the photocatalytic properties of undoped, boron (B) doped, zirconium (Zr) doped, and B and Zr co-doped TiO2 powders synthesized by sol-gel process were researched. Undoped powders were synthesized for R ratio of 1, 3, 5, 10, 30, and 50 while doped and co-doped powders were synthesized for R ratio of 50. Undoped powders were calcined at 300, 400, and 500oC for 1, 2, and 3 h while doped and co-doped powders were calcined at 300 and ...
Citation Formats
H. Camurlu, A. Aydogdu, Y. A. Topkaya, and N. Sevinc, “Production of boron nitride by carbothermic and mechanochemical methods, and nanotube formation,” 2003, vol. 169, Accessed: 00, 2020. [Online]. Available: