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您的检索式：作者名="Alfredo Aloise"
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| 1 | Modelling of adsorption of textile dyes over multi-walled carbon nanotubes:Equilibrium and kinetic显示文摘The paper deals with the application of multiwall carbon nanotubes(CNTs) to the adsorption of dyes from wastewater. Textile dyes are dangerous and diffused pollutant in wastewater, and the paper results confirmed the good adsorption ability of CNTs, with respect to classic active carbon, even for different dye types. The effect of surface treatments of CNTs was primarily investigated, revealing that neither the presence of residual catalyst nor common surface treatment(oxidation) affects the CNT's performances. Therefore less expensive nonpurified CNTs were assessed as good and economically convenient alternative for the process. In order to gain in generality in adsorption kinetic modelling, the parameters of the 'best fitting' pseudo-second order model have been correlated to the main process variables(the dye initial concentration and the specific mass of CNTs.) setting-up a predictive kinetic model useful design new application of these materials in currently operating industrial operations for adsorption. In addition, isothermal data were used to screen all the relevant adsorption isotherms models and the Temkin model was confirmed as the more effective to accurately fit equilibrium data for any of the considered different dye types. | Danilo Vuono Enrico Catizzone Alfredo Aloise Alfonso Policicchio Raffaele G.Agostino Massimo Migliori Girolamo Giordano | 2017 | Chinese Journal of Chemical Engineering2017，25，4： | 6 |
| 2 | The effect of FER zeolite acid sites in methanol-to-dimethyl-ether catalytic dehydration显示文摘In this paper, the effect of acidity of zeolites with FER framework was studied in the methanol dehydration to dimethyl ether reaction, by comparing catalysts with different Si/Al ratios(namely 8, 30 and60). The aim of this work was to investigate how the acid sites concentration, strength, distribution and typology(Br?nsted and Lewis) affect methanol conversion, DME selectivity and coke formation. It was found that the aluminium content affects slightly acid sites strength whilst a relevant effect on acid sites concentration and distribution(Br?nsted/Lewis) was observed as 24% of Lewis sites were found on Alrichest samples, whilst less than 10% of Lewis acid sites were observed on FER at higher Si/Al ratio. All the investigated catalyst samples showed a selectivity toward DME always greater than 0.9 and samples with the lowest Si/Al ratio exhibit the best performances in terms of methanol conversion, approaching the theoretical equilibrium value(around 0.85) at temperatures below 200 °C. Turnover-frequency analysis suggests that this result seems to be related not only to the higher amount of acid sites but also that the presence of Lewis acid sites may play a significant role in converting methanol. On the other hand, the presence of Lewis acid sites, combined with a high acidity, promote the formation of by-products(mainly methane) and coke deposition during the reaction. As final evidence, all the investigated catalysts exhibit very high resistance to deactivation by coke deposition, over 60 h continuous test, and a GC–MS analysis of the coke deposited on the catalyst surface reveals tetra-methyl benzene as main component. | Enrico Catizzone Alfredo Aloise Massimo Migliori Girolamo Giordano | 2017 | Journal of Energy Chemistry2017，26，3： | 5 |
| 3 | Catalytic behavior in propane aromatization using GA-MFI catalyst显示文摘Ga–Al-MFI samples were synthesized in hydrothermal conditions from gels of composition 1.08 CH_3 NH_2–0.134 TPABr–1 SiO_2–x Al_2O_3–y Ga_2O_3–40 H_2O at 175 °C for 7 days, with x = 0.005 and 0.0025, y = 0.005, 0.010 and 0.020. The samples were characterized by XRD, BET measurements, thermal analysis(TGA–DTA) atomic absorption and high resolution solid state MAS27 Al and71 Ga NMR measurements. The aromatization of propane was studied as catalytic test. The activity and selectivity of the catalysts were determined for benzene, toluene and xylenes on the one hand and for methane and ethane on the other hand. The most active sample was obtained with the highest Ga/Al ratio. For this sample, the BTX selectivity obtained by aromatization was always higher than the hydrocracking selectivity leading to methane and ethane. The relative amount of toluene was higher than that of benzene and of xylenes. The samples were deactivated by coke formation that was revealed more severe for the most active sample. | Alfredo Aloise Enrico Catizzone Massimo Migliori Janos B.Nagy Girolamo Giordano | 2017 | Chinese Journal of Chemical Engineering2017，25，12： | 0 |
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