The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The performance of asphalt pavement is seriously affected by aging of asphalt binder, so indices are expected which can not only evaluate aging resistance of asphalt binder but also indicate asphalt mixture performance. The objective of this paper was just to investigate effects of different rheological indices which present tighter and clearer correlation with asphalt mixture performance in evaluating...
A sampling system to collect exhaust emissions of a methanol engine by means of a sampling bag and an absorber was designed to absorb formaldehyde and unburned methanol emissions with deionized pure water. Three novel measurement methods that combine gas chromatography and liquid chromatography (GCLC), gas chromatography and the light spectrum (GCLS), and liquid chromatography and light spectrum (LCLS)...
Angelica lactone and its di/trimers is becoming an important renewable platform molecule but the development of simple hydrodeoxygenation (HDO) catalysts will play a major role in its utilization as feedstock for fuel production. In this study, Ni supported on ZSM-5 having Si/Al ratio of 40 and 300 or Ni supported on heteropoly acid/activated carbon (Ni/Ac-HPA) were synthesized and their HDO activities...
A switchable solvent with a diamine structure called N, N, N′, N′-tetraethyl-1, 3-propanediamine (TEPDA) has been synthesized through an alkylation reaction. This solvent can switch between its hydrophilic and hydrophobic states with the addition or removal of CO2, respectively. It is found that TEPDA can be applied as an organic solvent and can be ionized in water to form cations. With these properties,...
Glycerol acetonide, also termed solketal, which is chemically derived from bio-glycerol, was used as a combustion improver in the dispersed emulsion phase in this study. Nano-emulsions of ultra-low sulfur diesel (ULSD) containing nano-sized droplets of solketal were produced using microwave irradiation and compared with those produced by mechanical homogenizing. A non-ionic surfactant mixture of Tween...
In the support of developing a substitute for diesel fuel automobiles, the research in renewable energy has been focused due to the hurly-burly situation for petroleum combat and environmental causes. The present study has been carried out in a naturally aspirated light-duty variable compression ratio (VCR) multi-fuel research engine. As input amends, three significant input parameters as injection...
In this work, TiO2 nanoparticles have been prepared by the sol–gel (at different calcination temperatures) and solution-combustion method for hydrogen-iodide decomposition in thermo-chemical water-splitting sulfur-iodine (SI) cycle for hydrogen production. The sol-gel method derived TiO2 (TiO2-SGM-300 and TiO2-SGM-500) provide smaller nanoparticles as compared to the solution-combustion (TiO2-SCM)...
Numerical study of energetic and emission characteristics of HCCI engine operating on iso-octane based fuel blends comprising hydrogen or syngas as additives is conducted on the basis of 2D CFD simulation for two values of fuel-to-air equivalence ratio ϕ = 0.4 and 0.2. The features of combustion are analyzed for the case when the maximal mass-average temperature (Tev)max during the combustion of different...
This paper made a preliminary investigation of CO effects on lignite liquefaction process. The Schütze method coupled with an elemental analyzer was adopted for directly determining the O contents of liquid and solid materials, and the O balance, variation amounts of water, and CO consumptions were calculated quantitatively for liquefaction processes. It was found that the two reactions which were...
MR-Process consists two stage combustion mechanism in twin swirl flow conditions which is created by special design of 2 intake manifolds and combustion chamber (CC) geometry of a 4-valve engine. It is a question if it is possible to apply a Quasi MR-Process by modifying CC of a 2-valve engine which has only one intake manifold. Previously engine tests were successfully conducted on a 2-valve and...
Biomass pretreatment is still a major challenge for improving bioethanol production. The performance of two alkaline-mechanical pretreatments, alkaline twin-screw extrusion (ATSE) pretreatment where both alkaline treatment and refining occur simultaneously and alkaline pretreatment followed by PFI refining (APR), was compared in pretreating corn stover for fermentable sugar production at the same...
In this research, thermodynamic and kinetic aspects of methanol production by carbon dioxide in the presence of the proton sponge as the reaction catalyst and borane molecule as the reductive reagent were investigated theoretically. Proton sponge as the super base plays a key role in the carbon dioxide activation reaction. A comprehensive study was performed on the reaction mechanism and the most...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.