A Study on the Adsorption and Catalytic Oxidation of Asphaltene onto Nanoparticles

Document Type: Research Paper

Authors

university of isfahan

Abstract

The use of nanoparticles, including metal oxide surfaces, as asphaltene adsorbents is a potential method of removing and/or upgrading asphaltenes. The adsorption of two asphaltene types, extracted from two types of Iranian crude oil, onto nanoparticles (TiO2, SiO2, and Al2O3) are assessed and the thermal behavior of the adsorbed asphaltenes is examined under an oxidizing atmosphere through thermogravimetric and differential scanning calorimetry (TG/DSC) analyses. The extracted asphaltenes are characterized through the X-ray diffraction technique, and adsorption isotherms are measured through UV-Vis spectrophotometry of the asphaltene-toluene model solutions. The isotherm data of all the nanoparticles are adequately fitted by the Langmuir model, indicating that asphaltenes form monolayer coverage on solids surface sites. The adsorption capacities of asphaltenes onto the metal oxides follow the order of Al2O3> TiO2> SiO2. The results indicate that asphaltene with high aromaticity has more adsorption affinity, indicating the effect of the chemical structural of the asphaltenes. The results of asphaltene oxidation tests reveal that the presence of nanoparticles leads to a decrease in oxidation temperature (~100 °C) and activation energy. The effects of nanoparticles on asphaltene oxidation are catalytic.

Keywords


Bouhadda Y., Bormann D., Sheu E., Bendedouch D. et al., “Characterization of Algerian Hassi-Messaoud Asphaltene Structure Using Raman Spectrometry and X-ray Diffraction,” Fuel, 2007, 86,1855-1864.

Nassar N. N., “Asphaltene Adsorption onto Alumina Nanoparticles: Kinetics and Thermodynamic Studies,” Energy Fuels, 2010, 24, 4116-4122.

Groenzin H. and Mullins O. C., “Molecular Size and Structure of Asphaltenes from Various Sources,” Energy Fuels, 2000, 14, 677-684.

Syunyaev R. Z., Balabin R. M., Akhatov I. S., and Safieva J. O., “Adsorption of Petroleum Asphaltenes onto Reservoir Rock Sands Studied by Near-Infrared (NIR) Spectroscopy,” Energy Fuels, 2009, 23, 1230-1236.

Alboudwarej H., Pole D., Svrcek W. Y., and Yarranton H. W., “Adsorption of Asphaltenes on Metal,” Ind. Eng. Chem. Res., 2005, 44, 5585-5592.

Marczewski A. W. and Szymula M., “Adsorption of Asphaltenes from Toluene on Mineral Surface,” Colloid Surf. A. Physicochem. Eng. Asp., 2002, 208, 259-266.

Rudrake A., Karan K., and Horton J. H., “A Combined QCM and XPS Investigation of Asphaltene Adsorption on Metal Surfaces,” J. Colloid Interface Sci., 2009, 332, 22-31.

Franco C., Patino E., Benjumea P., Ruiz M. A. et al., “Kinetic and Thermodynamic Equilibrium of Asphaltene Sorption onto Nanoparticles of Nickel Oxide Supported on Nanoparticulated Alumina,” Fuel, 2013, 105, 408-414.

Xinhu T. and Dongyang L., “Evaluation of Asphaltene Degradation on Highly Ordered TiO2 Nanotubular Arrays via Variations in Wettability,” Langmuir, 2011, 27, 1218-1223.

Mohammadi M., Akbari M., Fakhroueian Z., Bahramian A. et al., “Inhibition of Asphaltene Precipitation by TiO2, SiO2, and ZrO2 Nanofluids,” Energy Fuels, 2011, 25, 3150-3156.

Lopez-Linares F., Carbognani L., Sosa-Stull C., Almao P. P. et al., “Adsorption of Virgin and Visbroken Residue Asphaltenes over Solid Surfaces. 1. Kaolin, Smectite Clay Minerals, and Athabasca Siltstone,” Energy Fuels, 2009, 23, 1901-1908.

Nassar N. N., Hassan A., and Almao P. P., “Thermogravimetric Studies on Catalytic Effect of Metal Oxide Nanoparticles on Asphaltene Pyrolysis under Inert Conditions,” J. Therm. Anal. Calorim., 2012, 110, 1327-1332.

Tarboush B. J. A. and Hossein M. M., “Adsorption of Asphaltenes from Heavy Oil onto In Situ Prepared NiO Nanoparticles,” J. Colloid Interface Sci., 2012, 378, 64-69.

Tarboush B. J. A. and Hossein M. M., “Oxidation of Asphaltenes Adsorbed onto NiO Nanoparticles,” Appl. Catal. A., 2012, 445-446, 166–171.

Nassar N. N., Hassan A., and Almao P. P., “Effect of Surface Acidity and Basicity of Alumina on Asphaltene Adsorption and Oxidation,” J. Colloid Interface Sci., 2011, 360, 233-238.

Nassar N. N., Hassan A., and Almao P. P., “Effect of Particle Size on Asphaltene Adsorption and Catalytic Oxidation onto Alumina Nanoparticle,” Energy Fuels, 2011, 25, 3961-3965.

Nassar N. N., Hassan A., and Almao P. P., “Comparative of Adsorbed Asphaltene onto Transition Metal Oxide Nanoparticle,” Colloid Surf., 2011, 384, 145-149.

Nassar N. N., Hassan A., and Almao P. P., “Metal Oxide Nanoparticles for Asphaltene Adsorption and Oxidation,” Energy Fuels, 2011, 25, 1017-1023.

Hosseinpour N., Khodadadi A. A., Bahramian A., and Mortazavi Y., “Asphaltene Adsorption onto Acidic/Basic Metal Oxide Nanoparticles Toward in Situ Upgrading of Reservoir Oils by Nanotechnology,” Langmuir, 2013, 29, 14135−14146.

Husein M. M. and Alkhaldi S. J., “In Situ Preparation of Alumina Nanoparticles in Heavy Oil and Their Thermal Cracking Performance,” Energy Fuels, 2014, 28, 6563–6569.

Shirokoff J. W., Siddiqui M. N., and Ali M. F., “Characterization of the Structure of Saudi Crude Asphaltenes by X-ray Diffraction,” Energy Fuels, 1997, 11, 561-565.

Solaimany Nazar A. R. and Bayandory L., “Investigation of Asphaltene Stability in the Iranian Crude Oils,” Iran. J. Chem. Eng., 2005, 5, 3-12.

Foo K. Y. and Hameed B. H., “Insights into the Modeling of Adsorption Isotherm Systems,” Chem. Eng. J., 2010, 156, 2-10.

Natarajan A., Kuznicki N., Harbottle D., Masliyah J. et al., “Understanding Mechanisms of Asphaltene Adsorption from Organic Solvent on Mica,” Langmuir, 2014, 30, 9370-9377.

Dudasova D., Simon S., Hemmingsen P. V., and Sjoblom J., “Study of Asphaltenes Adsorption onto Different Minerals and Clays: Part 1. Experimental Adsorption with UV Depletion Detection,” Colloid Surf., 2008, 317, 1-9.

Nunez L., Fraga F., Nunez M. R., and Villanueva M., “Thermogravimetric Study of the Decomposition Process of the System BADGE,” Polymer, 2000, 41, 4635-4641.

Coats A. W. and Redfern J. P., “Kinetic Parameters from Thermogravimetric Data,” Nature, 1964, 201, 68-69.