In this article, we considered all aspects of acidity (nature of acid sites, strength, density, etc.)
in solid catalysts and in zeolites in particular. After reminding the definition of acidity in liquid …

When synthesized in a specific size range and with a special surface coating tailored to
achieve certain desired functionalities, nanoparticles exhibit unique properties with …

Asphaltene adsorption at solid surfaces is a ubiquitous phenomenon that begins within the
production well and continues through the entire production chain. It is generally an …

The defluoridation performance of a simple and efficient adsorbent (SAA), developed by H 2
SO 4 treatment of alumina, was explored in fixed-bed adsorption column (FBAC). The SAA …

Advances in high-resolution Fourier transform ion cyclotron resonance mass spectrometry
(FT-ICR MS) enable molecular-level characterization of ultracomplex asphaltene samples …

During the early 21st century, nanotechnology has stood strong in the oil and gas industry,
with many applications that have gone from laboratory and numerical simulation studies to …

In this work, we evaluate the effect of nanoparticles and nanofluids as viscosity reducers for
heavy crude oil (HO). The effect of alumina, silica and acidic silica nanoparticles was …

In Colombia, the estimated reserves of crude oil are approximately 2.0 thousand million
barrels, decreasing by approximately 13% in the last year according to the National …

The deposition of asphaltenes is one of the most difficult problems to overcome in oil
production and processing. The presence of asphaltenes in crude oil, and consequently, the …

Many in situ recovery methods have been developed to extract heavy oil and bitumen from
deep reservoirs. The “underground refinery” approach using a nanosize ultradispersed (UD) …