Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Mildred Becerra"'
Autor:
Jennifer S. Shumaker-Parry, Amin Pourmohammadbagher, Arthur D. Quast, Jeoffrey Ollinger, Mildred Becerra, John M. Shaw
Publikováno v:
Energy & Fuels. 30:10148-10160
Asphaltenes are a poorly defined class of self-assembling and surface active molecules present in crude oils. The nature and structure of the nanoaggregates they form remain subjects of debate and speculation. In this exploratory work, the surface pr
Publikováno v:
Journal of Chemical & Engineering Data. 61:2659-2668
Propane and mixtures including propane as a principal component are among the leading potential candidates for co-injection along with steam for improving the process and environmental efficiency of oil sands bitumen production processes. Phase diagr
Publikováno v:
Fluid Phase Equilibria. 380:28-38
The phase behavior of Safaniya vacuum residue (Saudi Arabia) from (200 to 520) K at atmospheric pressure was investigated and the phase states were determined from nanofiltered samples with pentane-asphaltene mass fractions w A between 0.048 and 0.55
Autor:
Pierre Levitz, Jérémie Gummel, John M. Shaw, Loïc Barré, Didier Espinat, Mildred Becerra, Joëlle Eyssautier
Publikováno v:
Energy & Fuels. 26:2680-2687
Physical separation of heavy oils and bitumen is of particular interest because it improves the description of the chemical and structural organization in these industrial and challenging fluids (Zhao, B.; Shaw, J. M.Composition and size distribution
Publikováno v:
Journal of Chemical & Engineering Data. 56:3242-3253
The phase behavior of Athabasca bitumen (Alberta, Canada) was determined from nanofiltered permeates and retentates with pentane-asphaltene mass fractions wA ranging from 0.053 to 0.57, and chemically separated Athabasca pentane maltenes and pentane
Publikováno v:
Energy & Fuels. 25:782-790
Forced and diffusive mass transfer between pentane and Athabasca bitumen fractions was investigated at 297 K. Mutual diffusion coefficients were obtained using a free diffusion technique, where time-dependent composition profiles were jointly fit to
Publikováno v:
Journal of Chemical & Engineering Data. 55:1389-1397
Complex viscosity and phase-angle measurements for Athabasca bitumen and Maya crude oil were performed with a rotational rheometer using parallel plates and a double gap cylinder in the oscillatory mode over the temperature range of (200 to 410) K. A
Publikováno v:
Energy & Fuels. 23:4431-4437
The mass fraction of resins in asphaltene-rich aggregates, present in crude oils, and the physics and chemistry associated with them are poorly defined because of the variability of the definitions of asphaltenes and resins but remain a subject of si
Publikováno v:
Fluid Phase Equilibria. 272:32-41
The phase behaviour of Maya crude oil and its nano-filtered sub fractions was studied using differential scanning calorimetry and phase angle measurements in the temperature range 173–573 K at atmospheric pressure. The combination of these two tech
Publikováno v:
Fluid Phase Equilibria. 268:134-141
A correlation for the constant pressure specific heat capacity, cp, valid from 50 K to the fusion temperature for pure crystalline organic solids was presented recently [V. Lastovka, J.M. Shaw, J. Chem. Eng. Data 52 (2007) 1160–1164]. The predictiv