The kinetic experiments at various working conditions (ie, temperature: 500 C-900 C, pressure: 1-15 bar, H 2 O/CH 4 ratio [S/C ratio] of 1-2.5, and gas hourly space velocity of 900-1700 1/h) in the presence of LaNiO 3 perovskitetype oxide were done to consider and assess the outcome of steam methane reforming (SMR) and to build up its kinetic models depending on Langmuir-Hinshelwood method in a fixed bed reactor. The outcomes demonstrate, the methane conversion, H 2 and CO yields and formed CO 2 are affected by the working parameters. Elevated temperature is profitable for more methane conversion, H 2 and CO yield. While high temperature has a negative effect on mol % of CO 2 in outlet products. The high working pressure will not profit SMR respect to CH 4 conversion and products distribution. The efficacy of S/C ratio on the CH 4 conversion and CO yield depended on temperature range. H 2 yield considerably diminishes with an increment in S/C ratio, while the trend was reverse for CO 2 value in outlet gas. The accuracy of suggested kinetic model was evaluated by correlation and statistical tests. Outcomes exhibited that the obtained data were well anticipated through the suggested model, owning to presumption of nonideal gas phase and by utilizing reasonable equation of state of PPR78. K E Y W O R D S CH 4 conversion, H 2 and CO yields, kinetic model, LaNiO 3 perovskite-type oxide, steam methane reforming

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Titanium dioxide nanoparticle has been proposed to be capable of presenting new consequences in field of date syrup decoloration besides common industrial discoloring techniques like using carbon active. This nano structure was used as a photocatalyst in the presence of ultraviolet radiation to investigate the decrement in high color and turbidity of date syrup. Photocatalytic decoloration process was optimized using response surface methodology statistical design. The effect of TiO2 catalyst portion, date syrup concentration, dose of UV radiation (UV power multiple time of processing) on the qualitative characterization of the date syrup including color and reduced sugars content (glucose and fructose) was investigated. The optimum condition obtained by experimental design method was date syrup concentration 19.06°Brix, TiO2 content 3.81 g/l and dose 5,082.21 kJ. In this condition, 53% color, 5% glucose, and 3% fructose reduction was obtained. Practical applications Industrial date syrup is a common source of sugar which its consumption has been limited due to the presence of some coloring and turbidity agents. Thus Investigating new decoloration methods like nanotechnology which may reduce the colorants, as well as leaving less environmental pollution, seems necessary. The study offers using photocatalyst nanoparticle as a decolorant and obtaining the best decoloration condition by response surface methodology to get the least color and sugar loss in industrial date syrup.