In this paper, mesoporous alumina with different pore sizes and wall crystalline structures was synthesized at calcination temperatures over 550 degrees C. The characterization of the samples calcined at 550, 800, 1100, and 1300 degrees C, respectively, was performed using TEM, XRD, FTIR, TG/DTA, and N2 adsorption/desorption techniques. The correlation between pore size and wall crystalline str...

A dibenzothiophene (DBT)-desulfurizing bacterial strain was isolated and identified as Gordona strain CYKS1. Strain CYKS1 was found to transform DBT to 2-hydroxybiphenyl via the 4S pathway and to be able to also use organic sulfur compounds other than DBT as a sole sulfur source. Its desulfurization activity was susceptible to sulfate repression. Active resting cells for desulfurization could b...

Catalytic thermolysis is considered to be an effective process for viscosity reduction, the conversion of high-molecular components oil (resins and asphaltenes) into light hydrocarbons, desulfurization hydrocarbons. In this paper, we conducted non-catalytic catalytic a heavy sample isolated from Ashalcha field (Tatarstan, Russia) at temperature 250 °C. Fullerene C60 nanoparticles were applied p...

The purpose of this study is to enhance the quality heavy oil through refinement using aquathermolysis with simultaneous injection steam and thermally stable nonionic surfactants (NS). To achieve this, NS R-PPG type was synthesized, optimal product structures were characterized infrared (IR) methods. Furthermore, thermal stability synthesized investigated in line requirements for used applicati...

nanotechnology has the potential to introduce revolutionary changes to several areas of oil and gasindustry such as exploration, production, enhanced oil recovery, and refining. in this paper, the effectof different concentrations of fe2o3 nanoparticles as a catalyst on the heavy oil viscosity at varioustemperatures is studied. furthermore, the effect of a mixture of fe2o3 nanoparticles and ste...

Phosphorus from excess fertilizers and detergents ends up washing into lakes, creeks, and rivers. This overabundance of phosphorus causes excessive aquatic plant and algae growth and depletes the dissolved oxygen supply in the water. In this study, aluminum-impregnated mesoporous adsorbents were tested for their ability to remove phosphate from water. The surface structure of the materials was ...

Phosphorus from excess fertilizers and detergents ends up washing into lakes, creeks, and rivers. This overabundance of phosphorus causes excessive aquatic plant and algae growth and depletes the dissolved oxygen supply in the water. In this study, aluminum-impregnated mesoporous adsorbents were tested for their ability to remove phosphate from water. The surface structure of the materials was ...

In this study, three solid acid catalysts, namely mesoporous aluminophosphate-supported 12-tungstophosphoric heteropoly (HPW/MAP), aluminosilicate-supported (HPW/MAS), and gamma alumina-supported (HPW/?-Al2O3) were prepared characterized. Mesoporous aluminophosphate (MAP) aluminosilicate (MAS) synthesized via sol-gel hydrothermal methods, respectively, 25 wt.% of (HPW) was immobilized on the su...

Technical lignins are an attractive and renewable source for the production of aromatic chemicals. However, efficient depolymerization technical to valuable low-molecular-weight chemicals is challenging due its recalcitrant nature. Here, we report use nonprecious metal-based, monometallic Ni (prereduced) bimetallic NiMo (in situ sulfided) catalysts supported on mesoporous alumina, either as suc...