Synthesis of Mg-Al Hydrotalcite Clay with High Adsorption Capacity

Li, Zhaoyi; Zhang, Jie; Qu, Chengtun; Tang, Ying; Slaný, Michal

doi:10.3390/ma14237231

Cited by 18 publications

(11 citation statements)

References 37 publications

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“…The increasing adsorption/desorption volume by calcination is similar was reported in other research works [27,31,32].…”

Section: Gas Sorption Analysissupporting

confidence: 91%

“…The specific surface area of LDH and CLDH obtained in this work are in the range of the values obtained in similar syntheses [27,28]. With a similar Mg/Al ratio, the obtained BET specific surface area from this work (36.7 m 2 g −1 ) is higher compared to was synthesized by previous work (17.3 m 2 g −1 ) [29], but smaller compared to another work (58 m 2 g −1 ) [30].…”

Section: Gas Sorption Analysissupporting

confidence: 77%

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Assessing the effect of calcination on adsorption capability of Mg/Al layer double hydroxides (LDHs)

Wiyantoko¹,

Kurniawati²,

Purbaningtias³

et al. 2022

Mater. Res. Express

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The present study was carried out to prepare and characterize calcined Mg/Al layer double hydroxides (LDHs) used in the adsorption of methyl orange in an aqueous solution as an anionic dye in a batch system. Synthesis of LDHs using coprecipitation method with Mg/Al ratio of 3:1 and obtained material was treated by hydrothermal treatment for 4 hours in 400 °C. The result showed that hydrothermal treatment on the synthesis of Mg/Al LDHs yielded the formation of mixed metal oxide from magnesium oxide and aluminum oxide on calcined LDHs were shown on a wide diffraction pattern, while infrared spectrum showed that NO3 - and CO3 2- as balancing anions disappeared after calcination process. The optimum condition for calcined layer double hydroxides (CLDH) and LDHs were in pH 4 (40.61 mg/g) and pH 3 (36.29 mg/g) for methyl orange adsorption. The equilibrium time for CLDH and LDHs respectively were 3 hours and 5 hours where the initial time started rapidly. The kinetic study described pseudo-second-order fitted for methyl orange adsorption with R2 = 0.9998 and 0.9996 for CLDH and LDH. The best isotherm was shown by Freundlich model with R2 = 0.9957 and 0.9721 for CLDH and LDH and. The results suggested that calcined LDHs were efficient adsorbents for methyl orange remediation of relatively high concentrations.

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“…The increasing adsorption/desorption volume by calcination is similar was reported in other research works [27,31,32].…”

Section: Gas Sorption Analysissupporting

confidence: 91%

Section: Gas Sorption Analysissupporting

confidence: 77%

Assessing the effect of calcination on adsorption capability of Mg/Al layer double hydroxides (LDHs)

Wiyantoko¹,

Kurniawati²,

Purbaningtias³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

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“…26,27 Furthermore, the peaks around 744 and 557 cm À1 were attributed to the stretching and bending vibrations of metal oxygens (Al O and Mg O) present in hydrotalcite. 28 The crystalline structures of Mg-Al LDH were analyzed by XRD, as shown in Figure 2b. The characteristic peaks were observed at 2θ = 11.56 , 23.24 , 34.62 , 46.36 , 60.7 , and 62.0 that correspond to the crystal planes of (003), ( 006), ( 009), (012), (110), and (113), respectively.…”

Section: Discussionmentioning

confidence: 99%

High oxygen barrier property of polyethylene composite films with bilayer polyvinyl alcohol coating for emergency foods in high‐humidity environments

Fu,

Wang,

Huang

et al. 2024

J of Applied Polymer Sci

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The limited oxygen barrier of polyethylene (PE) films has restricted their further application in food packaging, like emergency foods. Although its oxygen barrier property can be improved by applying a polyvinyl alcohol (PVA) coating, the application of PVA/PE composite films in high‐humidity environments is still challenging. Hence, this study aimed to enhance the oxygen barrier properties of PVA/PE composite films in high‐humidity environments. Specifically, PVA coatings were modified by the itaconic acid (IA) and magnesium‐aluminum layered double hydroxides (LDH), and then applied to PE films as bilayer coating. Because of the unique bilayer coating on the PE surface, the oxygen barrier property of PVA/PE composite film (IA/LDH‐p) in high‐humidity environments has been further improved. The results confirmed that IA/LDH‐p had an oxygen permeability coefficient of 1.92 ± 0.16 × 10−16 cm3 cm/(cm2 s Pa) under a high‐humidity environment test, 82.42% better than that of single‐layer coating coated on PE surface. After being stored at RH 90% for 36 h, the tensile strength and elongation at break values of IA/LDH‐p were 27.20 MPa and 919.63%, respectively. Overall, this obtained PVA/PE composite films showed great potential for application in emergency foods packaging, particularly in high‐humidity environments.

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“…As such, drilling fluids need an additive with high stability. In addition, our research group has conducted research in the field of drilling fluid treatment agents [ 7 , 8 ], as a result of which we proposed some inorganic materials as desirable additives under HPHT conditions [ 9 , 10 ]. Graphite is an atomic crystal with carbon atoms connected by covalent single bonds to form a stable regular hexagonal network structure.…”

Section: Introductionmentioning

confidence: 99%

Lubricity and Rheological Properties of Highly Dispersed Graphite in Clay-Water-Based Drilling Fluids

Wang

Slaný

et al. 2022

Materials

Self Cite

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Improving the tribological characteristics of water-based drilling fluids by adding graphene-based lubricants has garnered attention because of the potential for a range of inorganic-material-based additives at high temperature. In this study, we constructed a green and simple adsorption approach to prepare highly dispersed graphite using a cationic surfactant for graphite modification. The findings demonstrated that the prepared graphite was highly dispersed in water and had a low sedimentation rate and small contact angle in distilled water. The concentration dosage of cetyltrimethylammonium chloride (CTAC) on graphite was 0.02 g/g. We evaluated the performance of the modified graphite as a lubricated additive in water-based drilling through a rheological study and viscosity coefficient measurement. The results showed that the viscosity coefficient of drilling fluid with 0.05% modified graphite was reduced by 67% at 180 °C. We proved that the modified graphite can significantly improve the lubrication performance of drilling fluid. Furthermore, we revealed the lubrication mechanism by analyzing the chemical structural and crystalline and morphological features of graphite through a particle size test, zeta potential test, Fourier transform infrared (FTIR) spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscopy (SEM) measurements. The results indicated that the modification of graphite by CTAC only occurs through physical adsorption, without changing the crystal structure. These findings provide a reference for the development of high-performance water-based drilling fluids.

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Synthesis of Mg-Al Hydrotalcite Clay with High Adsorption Capacity

Cited by 18 publications

References 37 publications

Assessing the effect of calcination on adsorption capability of Mg/Al layer double hydroxides (LDHs)

Assessing the effect of calcination on adsorption capability of Mg/Al layer double hydroxides (LDHs)

High oxygen barrier property of polyethylene composite films with bilayer polyvinyl alcohol coating for emergency foods in high‐humidity environments

Lubricity and Rheological Properties of Highly Dispersed Graphite in Clay-Water-Based Drilling Fluids

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