A Simple Model of the Oxidation Kinetics of Boron in a Medium Containing Water Vapor

Sontgen, R.; Friedrich, Axel

doi:10.1615/intjenergeticmaterialschemprop.v2.i1-6.110

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2011

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“…Vovchuk et al [12] measured B 2 O 3 gasification rates in pure water and dry air atmospheres for temperatures as high as 1303 K. They found that the gasification rates for B 2 O 3 in water vapor were significantly greater than those in air. Sontgen et al [13] found that the addition of 3 to 8% water vapor to air significantly increased the oxidation rate at 803 K.…”

Section: Introductionmentioning

confidence: 99%

The Effect of A Boron Oxide Layer on Hydrogen Production by Boron Hydrolysis

Hamed¹,

Wahbeh²,

Kasher³

2011

Linköping Electronic Conference Proceedings

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Hydrolysis of boron is investigated as a part of a boron/boron oxide solar, water-splitting, thermochemical cycle. Boron was hydrolysed and boron oxide was gasified with steam in a tubular reactor. The influence of the reactor temperature and time on hydrogen conversion was measured at furnace set point temperatures of 873, 973 and 1073 K. The hydrogen production rate was measured by inline gas chromatography. The products were analyzed by X-ray diffraction. The average hydrogen production efficiency of 92% was obtained for both 973 and 1073 K. The formation of a boric acid layer on the reactor walls was attributed to the gasification of the boron oxide. The X-ray analysis shows 100% conversion of the boron to boron oxide and boric acid.

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Section: Introductionmentioning

confidence: 99%