نتایج جستجو برای: hydrotreating catalyst
تعداد نتایج: 44207 فیلتر نتایج به سال:
abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...
Human activities such as burning fossil fuels for energy production have contributed to the rising global atmospheric CO2 concentration. The search alternative renewable and sustainable sources replace is crucial meet demand. Bio-feedstocks are abundant, carbon-rich, bioresources that can be transformed into value-added chemicals, biofuels, biomaterials. conversion of solid biomass liquid fuel ...
Ionic liquids can be considered as green solvents due to their very low vapor pressure and wide range of applications with unique physical and chemical properties. The potential of ionic liquids have been recognized worldwide. Scientists and engineers have been working in the advancement of preparation and applications of ionic liquid so that it can provide a range of options to industrialists ...
Abstract Exhaust from diesel engine contributes a main part in both PM10 and PM2.5 problem. Polycyclic aromatic hydrocarbons (PAHs) fuel should be considered because of their toxicity. Worldwide Fuel Charter recommends the PAHs content less than 2 wt.% for toxic exhaust emission. Nickle Molybdenum Sulfide over Gamma alumina (NiMoS/γ-Al O 3 ) catalyst is generally used hydrotreating processes pe...
−The current technologies for achieving low sulfur in diesel fuel are based on hydrotreating, which requires high temperature, high pressure and excessive supply of hydrogen. Oxidative desulfurization (ODS) is considered one of the promising new methods for super deep desulfurization, which could be carried out under very mild conditions (atmospheric pressure, <100 oC) without consumption of hy...
Catalytic hydrotreating of algae bio-crude oil from hydrothermal liquefaction (HTL) Nannochloropsis sp. was performed. Different Ni-based catalysts, including Ni/γ-Al2O3, Ni-Cu/γ-Al2O3, Ni-Re/γ-Al2O3, and Ni-Cu-Re/γ-Al2O3, (10%Ni, 5%Cu, 2.5%Re) were used in upgrading the oil. Most catalytic systems could effectively eliminate S decrease N O contents, enhance more than 20% improvement higher hea...
The aim of the research was to study features distribution impurity metals in distillates several types heavy oil produced Uzbekistan, mixed with gas condensate. It has been revealed that basic mass impurities original is represented mainly by calcium salts petroleum acids. Thermal decomposition metal naphthenates accompanied formation highly corrosive organic concentration organometallic compo...
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