Showing papers on "Chromium(III) oxide published in 2019"
TL;DR: ZnO nanoparticles covered by Chromium (III) oxide (Cr2O3) were fabricated using spray pyrolysis and thermal evaporation technique to increase the H2S gas sensor repeatability.
17 citations
TL;DR: It was found that the solution pH, order of both adsorbates addition as well as the time interval between the AN and CT PAM addition have considerable influence on the structure of polymeric adsorption layer formed on the Cr2O3 surface.
13 citations
TL;DR: The overall results corroborate the predominant role of SnO2 as an excellent catalytic-enhancing agent thorough facilitating the charge transfer process and increasing the CO poisoning oxidation by the spillover of OHads to the Pt surface.
10 citations
TL;DR: In this article, a method for the preparation of a SiO2-TiO2/Cr2O3(840) porous composite material in a block form with walls made of a silicate matrix and the interconnected channels of the matrix containing spherical hollow oxide composites was proposed.
Abstract: A method for the preparation of a SiO2–TiO2/Cr2O3(840) porous composite material in a block form with walls made of a silicate matrix and the interconnected channels of the matrix containing TiO2/Cr2O3(840) spherical hollow oxide composites was proposed. The specific surface area (Ssp) of the block composites was 212.2 m2/g, which is 20 times greater than the value of Ssp for spherical composites not fixed in the silicon(IV) oxide matrix. The composition of the TiO2/Cr2O3(840) and SiO2–TiO2/Cr2O3(840) samples was studied by X-ray diffractometry and X-ray microanalysis, which indicated the presence of chromium(III) oxide, titanium(IV) oxide, and an amorphous silicon(IV) oxide phase in the latter. The SiO2–TiO2/Cr2O3(840) block composite material exhibited catalytic activity in the deep oxidation reaction of para-xylene: a 100% conversion of the organic substance was achieved at a temperature of 350°C.
6 citations
TL;DR: In this paper, a chromium (III) oxide/silicon carbide (Cr2O3/SiC) composite coating was proposed to improve the hydrogen permeation resistance of ferronickel alloy.
6 citations