Sorption of Asphaltenes onto Nanoparticles of Nickel Oxide Supported on Nanoparticulated Silica Gel

Cortés, Farid B.; Mejía, Juan M.; Ruiz, Marco A.; Benjumea, Pedro; Riffel, Douglas Bressan

doi:10.1021/ef201658c

Cited by 84 publications

(71 citation statements)

References 35 publications

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“…Hence, several authors have studied and used a wide range of materials for the asphaltene adsorption, and especially the nanoparticles have shown a better performance as composite and/or functionalized materials. The effect of several variables in adsorption processes such as the contact time [96], heptane/toluene ratio [97], initial concentration of asphaltenes and/or nanoparticles, pressure/temperature [98,99], concentration of other fractions such as resins [100], among others, have been studied. The implementation of γ-Al 2 O 3 nanoparticles [96] is one of the first studies that contemplate the use of nanoparticles for the adsorption of asphaltenes.…”

Section: Interaction Between Heavy Crude Oil Fractions and Nanoparticlesmentioning

confidence: 99%

Nanotechnology Applied to Thermal Enhanced Oil Recovery Processes: A Review

et al. 2019

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The increasing demand for fossil fuels and the depleting of light crude oil in the next years generates the need to exploit heavy and unconventional crude oils. To face this challenge, the oil and gas industry has chosen the implementation of new technologies capable of improving the efficiency in the enhanced recovery oil (EOR) processes. In this context, the incorporation of nanotechnology through the development of nanoparticles and nanofluids to increase the productivity of heavy and extra-heavy crude oils has taken significant importance, mainly through thermal enhanced oil recovery (TEOR) processes. The main objective of this paper is to provide an overview of nanotechnology applied to oil recovery technologies with a focus on thermal methods, elaborating on the upgrading of the heavy and extra-heavy crude oils using nanomaterials from laboratory studies to field trial proposals. In detail, the introduction section contains general information about EOR processes, their weaknesses, and strengths, as well as an overview that promotes the application of nanotechnology. Besides, this review addresses the physicochemical properties of heavy and extra-heavy crude oils in Section 2. The interaction of nanoparticles with heavy fractions such as asphaltenes and resins, as well as the variables that can influence the adsorptive phenomenon are presented in detail in Section 3. This section also includes the effects of nanoparticles on the other relevant mechanisms in TEOR methods, such as viscosity changes, wettability alteration, and interfacial tension reduction. The catalytic effect influenced by the nanoparticles in the different thermal recovery processes is described in Sections 4, 5, 6, and 7. Finally, Sections 8 and 9 involve the description of an implementation plan of nanotechnology for the steam injection process, environmental impacts, and recent trends. Additionally, the review proposes critical stages in order to obtain a successful application of nanoparticles in thermal oil recovery processes.

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Section: Interaction Between Heavy Crude Oil Fractions and Nanoparticlesmentioning

confidence: 99%

Nanotechnology Applied to Thermal Enhanced Oil Recovery Processes: A Review

et al. 2019

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“…Nassar, 2010Nassar, Hassan, & Pereira-Almao, 2011a. ) and the temperature (Cortés, Mejía, Ruiz, Benjumea, & Riffel, 2012;Franco, Patiño, Benjumea, Ruiz, & Cortés, 2013a;Franco et al, 2013b;Nassar, 2010), mainly at low asphaltene concentrations. Moreover, experimental studies regarding asphaltene adsorption have limitations resulting from the complexity of the asphaltene structures (Marczewski and Szymula, 2003;Mendoza de la Cruz et al, 2009), which strongly depend on the asphaltene concentration in solution.…”

Section: Introductionmentioning

confidence: 98%

Adsorption-desorption of n–C7 asphaltenes over micro- and nanoparticles of silica and its impact on wettability alteration

Cortés

Montoya

Acevedo

et al. 2016

CT&F Cienc. Tecnol. Futuro

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“…To this end, nanotechnology-in the form of nanoparticles-has recently become an area of research interest for the oil industry. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Because of their special and unique properties, nanoparticles are able to improve the mobility of oil under reservoir conditions and may be used as adsorbents/catalysts for 3 enhancing the upgrading and recovery of heavy oil. 5,11,13,14,22,23 The small size of the nanoparticles (between 1 and 100 nm) allows these particles unimpeded transport and a good dispersion ability through porous media, without risk of blocking the pores.…”

Section: Introductionmentioning

confidence: 99%

Influence of Asphaltene Aggregation on the Adsorption and Catalytic Behavior of Nanoparticles

et al. 2015

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This study is a continuation of our previous works on the use of metal-based nanoparticles for the adsorption of asphaltenes and its subsequent catalytic thermal decomposition. In this study, we evaluated the effects of asphaltene aggregation on the adsorption process and the subsequent catalytic oxidation using fumed silica and nanoparticles of NiO and/or PdO supported on fumed silica. Adsorption isotherms were constructed through batch adsorption experiments at 25°C by using mixtures of n-heptane and toluene in amounts of 0, 20 %v/v (heptol 20) and 40 %v/v (heptol 40) of n-heptane to obtain different aggregate sizes of asphaltenes. Subsequently, asphaltene oxidation in the presence and absence of the nanoparticles was carried out in a TGA/FTIR system to investigate the impact of adsorbed asphaltene aggregates on the catalytic activity of the selected nanoparticles. The adsorption isotherms were described by the solid-liquid equilibrium (SLE) model, and the catalytic behavior of the nanoparticles was compared based upon the trend of effective activation energies using the isoconversional method of Ozawa−Flynn−Wall (OFW). The results showed that the K parameter of the SLE model for both nanoparticles followed the trend of heptol 40 > heptol 20 > toluene, indicating that as the amount of precipitant in the solution increases, a higher degree of asphaltene self-association on the active site of the catalysts is found. On the other hand, the H parameter revealed higher adsorption affinities as the nheptane in the solution increased. However, when different adsorbents were compared at a fixed asphaltene concentration from the same solution it was found that the use of functionalized nanoparticles led to a lower degree of asphaltene self-association and a higher affinity. A correlation between the effective activation energies from the OFW model and the SLE parameters was developed, finding that for a fixed adsorbent, the E α increases as the affinity and the degree of self-association of asphaltenes increases. However, when the same asphaltenes were compared using different adsorbents, it was observed that the E α increases as the affinity decreases and the degree of asphaltene selfassociation increases. Consequently, this work shows the effect of the adsorption process on the catalytic activity of the nanoparticles. The reported results should give a better context for the use of such nanoparticles for the upgrading of heavy and extra-heavy oil.

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Sorption of Asphaltenes onto Nanoparticles of Nickel Oxide Supported on Nanoparticulated Silica Gel

Cited by 84 publications

References 35 publications

Nanotechnology Applied to Thermal Enhanced Oil Recovery Processes: A Review

Nanotechnology Applied to Thermal Enhanced Oil Recovery Processes: A Review

Adsorption-desorption of n–C7 asphaltenes over micro- and nanoparticles of silica and its impact on wettability alteration

Influence of Asphaltene Aggregation on the Adsorption and Catalytic Behavior of Nanoparticles

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