Topic
BET theory
About: BET theory is a research topic. Over the lifetime, 9046 publications have been published within this topic receiving 286142 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the structural, thermal, spectral, optical and surface analysis of rare earth metal ion (Gd3+) doped mixed Zn-Mg nano-spinel ferrites is reported.
98 citations
TL;DR: In this article, the authors investigated the Hg0 oxidation and the NO reduction measurements both in the presence and absence of NH3 in anatase type TiO2 catalysts, where the metal oxides added to the catalyst were observed to disperse well on the TiO 2 surface.
98 citations
TL;DR: In this article, the authors studied the pore structure of carbon coated on ceramic particles by carbonization of precursor in a powder mixture at 900°C and found that carbon-coated particles have a high surface area, more than 1000m 2 /g.
98 citations
TL;DR: In this paper, the effect of agitation speed, pH, temperature, adsorbent dosage, initial concentration of Cr(VI), and contact time were studied in batch adsorption experiments.
Abstract: Adsorption studies of Cr(VI) onto activated carbon, FNAC-700-1.5 (BET surface area of 2636 m 2 /g and total pore volume of 1.53 cm 3 /g), prepared from Fox nutshell by chemical activation with H 3 PO 4 at an impregnation ratio of 1.5 and activation temperature of 700 °C under N 2 atmosphere were carried out in the present work. In batch adsorption experiments the effect of agitation speed, pH, temperature, adsorbent dosage, initial concentration of Cr(VI), and contact time were studied. Also adsorption kinetics, equilibrium, and thermodynamics of Cr(VI) adsorption were studied. The adsorption was found to follow the pseudo second order model. A maximum adsorption of 74.95 mg/g was obtained at the operating condition of 35 mg/L of initial concentration of Cr(VI) at pH of 2.0, temperature 45 °C and contact time of 3 h. Thermodynamic parameters such as ΔG o , ΔH o and ΔS o were calculated by using Vant hoff equation. The adsorption process was endothermic and spontaneous one. In column experiments, the effects of the bed height of the packing material and flow rate of Cr(VI) solution on adsorption characteristics were studied. A maximum removal of 71.86% was achieved in the column study for 10 mg/L initial Cr(VI) concentration at 4 cm bed height, and 5 mL/min flow rate under ambient conditions at a temperature around 30 °C.
98 citations
TL;DR: Biomorphic LaFeO 3 hollow fibers with porous walls have been fabricated using cotton as biotemplates, and an investigation of CO sensing properties has been conducted as discussed by the authors, which is mainly due to the increasing of active surface area and gas diffusion.
Abstract: Biomorphic LaFeO 3 hollow fibers with porous walls have been fabricated using cotton as biotemplates. Cotton fibers are infiltrated with lanthanum nitrate and ferric nitrate solution and subsequently sintered in air at high temperatures to produce the final LaFeO 3 hollow fibers. The samples have further distinctions in structure, morphology and crystallite size of the nanocrystallites, BET surface area, and the pore size distribution. Growth mechanism of LaFeO 3 hollow fibers was proposed. Furthermore, gas sensors were fabricated and an investigation of CO sensing properties has been conducted. Compared with LaFeO 3 particles, the hollow fibers display much better CO sensing properties, which is mainly due to the increasing of active surface area and gas diffusion.
98 citations