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A new method to remove the nitrogen compounds from lubricating base stocks was revealed by using the complexing and crystallization of oxalic acid and nitrogen compounds in this paper. The data indicated that the reaction and filtration temperatures obviously influence the nitrogen removal...
In this study, the compounds in the liquid phases produced from the liquefaction of the lignocellulosic material have been investigated. For this purpose, liquid phases obtained from liquefaction of cotton stalk and cellulose and paper plant solid waste treated with aqueous acetic acid (HAc) or...
Al 2 O 3 supports were modified by integrating USY zeolites (13.6 wt.%) of various nominal SiO 2 /Al 2 O 3 molar ratios (30–80). The obtained hybrid solids calcined at 500 °C were impregnated at incipient wetness with a Co–Mo–P solution. After sulfiding with CS 2 -spiked naphtha (at 230...
In this paper, the effects of fluorine and phosphorus on the physical and chemical properties of Ni–Mo/Al 2 O 3 catalysts and the hydrodenitrogenation (HDN) activity of quinoline were investigated. The acidity, pore structure, and dispersion of Mo of the catalysts were analyzed with TG-DTA,...
An exergy analysis of Biomass Integrated Gasification-Fischer–Tropsch process is presented. The process combines an air-blown, atmospheric gasifier, using sawdust as feedstock, with a Fischer–Tropsch reactor and a steam-Rankine cycle for electricity generation from the Fischer–Tropsch tail...
Particle and deposit characteristics were studied with a new laboratory-scale deposition–corrosion apparatus designed to simulate the particle formation and deposition in large-scale diesel engines. Synthetic ash particles containing V, Ni, and Na are generated with an ultrasonic nebuliser....
Bench-scale investigations indicate that NO, NO 2 , hematite (α-Fe 2 O 3 ), maghemite (γ-Fe 2 O 3 ), and HCl promote the conversion of gaseous elemental mercury (Hg 0 ) to gaseous oxidized mercury (Hg 2+ ) and/or particle-associated mercury (Hg(p)) in simulated coal combustion flue gases. In...
A new laboratory-scale deposition–corrosion apparatus (DCA) has been designed to study the corrosion of Nimonic 80 A samples. The apparatus simulates conditions in a large-scale diesel engine operated with high sulphur- and ash-content heavy fuel oils. The fuel composition and ash particle...
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