Preparation and characterizations of porous γ-Al2O3 nanoparticles

Zhu, Lu; Pu, Sanxu; Liu, Kai; Zhu, Tianfei; Lu, Fuliang; Li, Jiangong

doi:10.1016/j.matlet.2012.06.004

Cited by 25 publications

(4 citation statements)

References 14 publications

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“…On the other hand, the signal at 1533 cm –1 is due to O–H bending, which is attributed to adsorbed water molecules. Due to Al–O vibrations, absorption bands at 491, 616, and 878 cm –1 have been observed, which are related to γAl 2 O 3 nanoparticles . The comparison of Figure a,b shows that the signals at 3468.2, 1383.79, and 535.1 cm –1 occurred due to zinc oxide in ZnO−γAl 2 O 3 nanoparticles.…”

Section: Resultsmentioning

confidence: 89%

Experimental Core Flooding Investigation of New ZnO−γAl₂O₃ Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

et al. 2022

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Generally, crude oil production in mature oil reservoirs is difficult. In this regard, some nanoparticles have been used to upgrade injected water into oil reservoirs. These nanoparticles can be used in a variety of injectable waters, including smart water (SMW) with special salinity. This study aims to evaluate the performance of the injection of SMW with ZnO−γAl 2 O 3 nanoparticles in enhanced oil recovery (EOR). The performance of SMW with ZnO−γAl 2 O 3 nanoparticles in regard to contact angle (CA), interfacial tension (IFT) reduction, and oil production with core flooding tests was investigated. The newly prepared ZnO−γAl 2 O 3 structure was characterized by energy dispersive X-ray (EDX), Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray diffraction (XRD) analyses in this research. The effects of different concentrations of nanofluids on zeta potential (ZP) and conductivity were investigated. The ZP test confirmed the results of the stability tests of the developed nanofluids in water-based solutions. After the introduction of ZnO−γAl 2 O 3 nanoparticles into the formation of brine and SMW solutions, oil−water (O/W) IFT was reduced. Based on the results, the IFT decreased more when nanoparticles and ions were present in the system. The results of the present study showed that at the concentration of SW+300 ppm ZnO−γAl 2 O 3 , the IFT value reached 11 mN/m from 27.24 mN/m. The results of the CA tests showed that improving the capabilities of salt water in the presence of nanoparticles has resulted in a very effective reduction. Also, in this regard, very hydrophilic wettability was achieved using SMW with stable nanoparticles. Moreover, the results of the present study showed that at the concentration of SMW+300 ppm ZnO−γAl 2 O 3 nanoparticles, the CA value reached 31 from 161°. In the end, the solution of SW+300 ppm ZnO−γAl 2 O 3 improved the OR by 15 and 24%. This research indicated that it is possible to develop and implement different nanoparticles by combining SMW to manage reservoir rock wettability and maximize OR from carbonate reservoirs. Thus, this combination as an effective agent could significantly increase reservoir sweep efficiency. Thus, as a result, using the established hybrid technique has distinct advantages over using SMW flooding alone.

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Section: Resultsmentioning

confidence: 89%

Experimental Core Flooding Investigation of New ZnO−γAl₂O₃ Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

et al. 2022

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“…Figure a,b shows the Fourier transforms infrared spectroscopy (FTIR) analysis results for the γ-Al 2 O 3 and synthesized nano-composites, respectively. Table shows the relevant analysis of different peaks. − …”

Section: Resultsmentioning

confidence: 99%

Improving Simultaneous Water Alternative Associate Gas Tests in the Presence of Newly Synthesized γ-Al₂O₃/ZnO/Urea Nano-Composites: An Experimental Core Flooding Tests

2022

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Nano-composites positively impact subsurface porous media’s properties during enhanced oil recovery. In this paper, γ-Al2O3/ZnO/urea nano-composites were selected to improve simultaneous water alternative associate gas (SWAG) tests based on better results in comparison to pure γ-Al2O3 in the static phase. According to the interfacial tension (lowest), contact angle (lowest), zeta potential (highest absolute value), and viscosity (lowest) tests in the presence of nano-composites, 80 ppm was chosen as the optimum concentration (OP) to perform SWAG experiments. The interfacial tension (mN m–1) and contact angle (°) values of nano-fluids at concentrations of 20, 40, 60, 80, 100, and 120 ppm were higher than that of alumina and were (27.50, 130.12), (24.38, 80.32), (21.63, 70.98), (15.63, 40.69), (10.75, 8.50), and (6.80, 46.01) mN m–1, respectively. It was evident that considering effective, efficient parameters before performing the main SWAG test was important, and due to using OP, the recovery factor increased from 55.9 to 83.1% at a constant SWAG ratio (1:1) and temperature (40 °C). Furthermore, higher instant oil and lower produced water were seen as OP during the nano-composite-assisted SWAG test at 80 ppm.

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“…As a general rule, lower preparation temperatures led to stronger sintering activity, and further influence directly impacted the sintering process for ceramics, resulted in varying properties for both alumina ceramics and alumina composites 9,10 . At present, there was a common practice of utilizing particular additives to regulate the reaction, such as NaF, 11 NaCl, 12 Na 3 PO 4, 13 Na 2 B 4 O 7 , 14 C 6 H 5 Na 3 O 7 , 15 C 18 H 33 NaO 2 , 16 (NH 4 ) 2 SO 4 , 17 and (NH 4 ) 2 CO 3 18 . This is done to minimize the temperature required for α‐Al 2 O 3 production, while also controlling the particle size and shape.…”

Section: Introductionmentioning

confidence: 99%

The effect of different anions on the crystallization course of α‐Al₂O₃ powder in hydrothermal method

Zhang,

Ouyang,

Zhou

et al. 2023

Int J Applied Ceramic Tech

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Abstractα‐Al2O3 powder with excellent sintering properties plays an irreplaceable role in advanced ceramics. However, the preparation of α‐Al2O3 at low temperature still remains a grand challenge. Herein, aluminum sulfate, aluminum nitrate, and aluminum chloride are used as raw materials for α‐Al2O3 synthesis. In general, the Al3+ will be hydrolyzed to form AlOOH during the hydrothermal process. But SO42− reacted with Al3+ and OH− to form Al4(OH)10SO4 during the hydrothermal process. During the calcining process, the transition temperatures from AlOOH to α‐Al2O3 were 1100°C, which can be summarized as follows: AlOOH → γ‐Al2O3 → θ‐Al2O3 → α‐Al2O3. Meanwhile, Al4(OH)10SO4 converted into pure α‐Al2O3 at only 1050°C, due to the direct conversion from γ‐Al2O3 to α‐Al2O3. This spherical α‐Al2O3 was made up by completely uniformed small particles of about 10–20 nm. Finally, an Al2O3 ceramic with 98.07% of theoretical density and .01% water absorption rate was obtained at a temperature of 1600°C. This work offers an intriguing solution toward the development of Al2O3‐based advanced ceramics.

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Preparation and characterizations of porous γ-Al2O3 nanoparticles

Cited by 25 publications

References 14 publications

Experimental Core Flooding Investigation of New ZnO−γAl₂O₃ Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

Experimental Core Flooding Investigation of New ZnO−γAl₂O₃ Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

Improving Simultaneous Water Alternative Associate Gas Tests in the Presence of Newly Synthesized γ-Al₂O₃/ZnO/Urea Nano-Composites: An Experimental Core Flooding Tests

The effect of different anions on the crystallization course of α‐Al₂O₃ powder in hydrothermal method

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Preparation and characterizations of porous γ-Al2O3 nanoparticles

Cited by 25 publications

References 14 publications

Experimental Core Flooding Investigation of New ZnO−γAl2O3 Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

Experimental Core Flooding Investigation of New ZnO−γAl2O3 Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

Improving Simultaneous Water Alternative Associate Gas Tests in the Presence of Newly Synthesized γ-Al2O3/ZnO/Urea Nano-Composites: An Experimental Core Flooding Tests

The effect of different anions on the crystallization course of α‐Al2O3 powder in hydrothermal method

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Experimental Core Flooding Investigation of New ZnO−γAl₂O₃ Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

Experimental Core Flooding Investigation of New ZnO−γAl₂O₃ Nanocomposites for Enhanced Oil Recovery in Carbonate Reservoirs

Improving Simultaneous Water Alternative Associate Gas Tests in the Presence of Newly Synthesized γ-Al₂O₃/ZnO/Urea Nano-Composites: An Experimental Core Flooding Tests

The effect of different anions on the crystallization course of α‐Al₂O₃ powder in hydrothermal method