Effect of Ni on MCM-41 in the Adsorption of Nitrogen and Sulfur Compounds to Obtain Ultra-Low-Sulfur Diesel

2018 ◽  
Vol 61 (15-17) ◽  
pp. 1721-1733 ◽  
Author(s):  
Julio César García-Martínez ◽  
H. A. González-Uribe ◽  
M. M. González-Brambila ◽  
N. G. Flores del Río ◽  
A. López-Gaona ◽  
...  
Keyword(s):  
Sulfur Compounds ◽  
Ultra Low Sulfur Diesel ◽  
Adsorption Of Nitrogen ◽  
Low Sulfur ◽  
Mcm 41

scholarly journals Mesoporous Adsorbents for Desulfurization of Model Diesel Fuel: Optimization, Kinetic, and Thermodynamic Studies

Fuels ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 47-58
Author(s):  
Anakaren Botana-de la Cruz ◽  
Philip E. Boahene ◽  
Sundaramurthy Vedachalam ◽  
Ajay K. Dalai ◽  
John Adjaye
Keyword(s):  
Diesel Fuel ◽  
Sulfur Compounds ◽  
Complexing Agent ◽  
Ultra Low Sulfur Diesel ◽  
Short Run ◽  
Fuel Optimization ◽  
Model Diesel ◽  
A Charge ◽  
Sulfur Adsorption ◽  
Low Sulfur

Mesoporous alumina-based adsorbents consisting of a π-electron acceptor complexing agent (2,7-dinitro-9-fluorenone) were synthesized and characterized. Adsorbents were screened for the removal of sulfur compounds from a model ultra-low-sulfur diesel fuel via a charge transfer complex (CTC) mechanism. The sulfur adsorption isotherms and kinetics were examined. The kinetics of sulfur adsorption followed a pseudo-second-order model with the CTC adsorbents. Among the three adsorbents screened, a commercial γ-Al2O3 CTC adsorbent showed the highest desulfurization in a short-run period. The regeneration of spent adsorbent was studied with three different polar solvents, namely chloroform, dichloromethane, and carbon tetrachloride. Dichloromethane was found to be the most suitable solvent for extracting a major portion of sulfur compounds occupied in the pores of the spent adsorbent. γ-Al2O3 CTC adsorbent can be reused after regeneration. Thermodynamic parameters such as Ea, ΔG, ΔH, and ΔS provided a better insight into the adsorption process.

Photocatalytic oxidative desulfurization of dibenzothiophene by C/TiO2@MCM-41 nanoparticles under visible light and mild conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34652-34662 ◽  
Author(s):  
Mahshid Zarrabi ◽  
Mohammad H. Entezari ◽  
Elaheh K. Goharshadi
Keyword(s):  
Fuel Cell ◽  
Oxidative Desulfurization ◽  
Environmental Pressures ◽  
Mild Conditions ◽  
Ultra Low Sulfur Diesel ◽  
Deep Desulfurization ◽  
Desulfurization Process ◽  
Petroleum Refineries ◽  
Low Sulfur ◽  
Mcm 41

Today, due to the environmental pressures on the sulfur content of gasoline and fuel cell applications, petroleum refineries need a very deep desulfurization process to reach the ultra-low sulfur diesel (ULSD, 1 ppm).

Formulation and tribological behavior of ultra-low sulfur diesel fuels microemulsified with glycerin

Fuel ◽  
2021 ◽  
Vol 292 ◽  
pp. 120257
Author(s):  
Igor M.A. Uchôa ◽  
Marcell S. Deus ◽  
Eduardo L. Barros Neto
Keyword(s):  
Tribological Behavior ◽  
Diesel Fuels ◽  
Ultra Low Sulfur Diesel ◽  
Low Sulfur

Effect of Biodiesel, JP-8 and Ultra Low Sulfur Diesel Fuel on Autoignition, Combustion, Performance and Emissions in a Single Cylinder Diesel Engine

2010 ◽  
Author(s):  
Chandrasekharan Jayakumar ◽  
Jagdish Nargunde ◽  
Anubhav Sinha ◽  
Walter Bryzik ◽  
Naeim A. Henein ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Properties ◽  
Nox Emissions ◽  
Single Cylinder ◽  
Combustion Performance ◽  
Ultra Low Sulfur Diesel ◽  
Diffusion Controlled ◽  
Performance And Emissions ◽  
Combustion Fraction ◽  
Low Sulfur

Concern about the depletion of petroleum reserves, rising prices of conventional fuels, security of supply and global warming have driven research toward the development of renewable fuels for use in diesel engines. These fuels have different physical and chemical properties that affect the diesel combustion process. This paper compares between the autoignition, combustion, performance and emissions of soybean derived biodiesel, JP-8 and ultra low sulfur diesel (ULSD) in a high speed single-cylinder research diesel engine equipped with a common rail injection system. Tests were conducted at steady state conditions at different injection pressures ranging from 600 bar to 1200 bar. The ‘rate of heat release’ traces are analyzed to determine the effect of fuel properties on the ignition delay, premixed combustion fraction and mixing and diffusion controlled combustion fractions. Biodiesel produced the largest diffusion controlled combustion fraction at all injection pressures compared to ULSD and JP-8. At 600 bar injection pressure, the diffusion controlled combustion fraction for biodiesel was 53% whereas both JP-8 and ULSD produced 39%. In addition, the effect of fuel properties on engine performance, fuel economy, and engine-out emissions is determined. On an average JP-8 produced 3% higher thermal efficiency than ULSD. Special attention is given to the NOx emissions and particulate matter characteristics. On an average biodiesel produced 37% less NOx emissions compared to ULSD and JP-8.

scholarly journals Emissions and In-Cylinder Combustion Characteristics of Fischer-Tropsch and Conventional Diesel Fuels in a Modern CI Engine

2005 ◽  
Author(s):  
Alexander G. Sappok ◽  
Jeremy T. Llaniguez ◽  
Joseph Acar ◽  
Victor W. Wong
Keyword(s):  
Combustion Characteristics ◽  
Operating Conditions ◽  
Fuel Properties ◽  
Emissions Reduction ◽  
Cylinder Pressure ◽  
Fischer Tropsch ◽  
Diesel Fuels ◽  
Ultra Low Sulfur Diesel ◽  
Low Sulfur ◽  
Detailed Chemical

Derived from natural gas, coal, and even biomass Fischer-Tropsch (F-T) diesel fuels have a number of very desirable properties. The potential for emissions reduction with F-T diesel fuels in laboratory engine tests and on-road vehicle tests is well documented. While a number of chemical and physical characteristics of F-T fuels have been attributed to the observed reduction in emissions, the actual effects of both the fuel properties and in-cylinder combustion characteristics in modern diesel engines are still not well understood. In this study a 2002, six-cylinder, 5.9 liter, Cummins ISB 300 diesel engine, outfitted with an in-cylinder pressure transducer. was subjected to a subset of the Euro III 13-mode test cycle under steady-state operating conditions. Emissions and in-cylinder pressure measurements were conducted for neat F-T diesel, low sulfur diesel (LSD), ultra-low sulfur diesel (ULSD), and a blend of FT/LSD. In addition, a detailed chemical analysis of the fuels was carried out. The differences in the measured combustion characteristics and fuel properties were compared to the emissions variations between the fuels studied, and an explanation for the observed emissions behavior of the fuels was developed.

Oxidation/elimination of heterocyclic sulfur compounds in a biphasic system with mesostructured FeOx/Ti-MCM-41 catalysts

2016 ◽  
Vol 421 ◽  
pp. 66-75 ◽  
Author(s):  
U. Arellano ◽  
J.A. Wang ◽  
L.F. Chen ◽  
G.Z. Cao ◽  
M. Asomoza ◽  
...  
Keyword(s):  
Sulfur Compounds ◽  
Biphasic System ◽  
Mcm 41
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