Controlled Synthesis of Different Morphologies of MgO and Their Use as Solid Base Catalysts

Sutradhar, Narottom; Sinhamahapatra, Apurba; Pahari, Sandip Kumar; Pal, Provas; Bajaj, Hari C.; Mukhopadhyay, Indrajit; Panda, Asit Baran

doi:10.1021/jp2022314

Cited by 163 publications

(96 citation statements)

References 59 publications

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“…The characteristic peak of the OH group at 3398 cm −1 was observed as well. The existence of these weak peaks for various carbonate species may be resulted from the adsorption of the atmospheric CO 2 on the surface of MgO [45,46]. Moreover, as there was no sign of the NH stretching vibration from 3150 to 3450 cm −1 [47,48], the absence of surface urea/amine species was clearly verified.…”

Section: Characterization Of Sds-assisted Mgomentioning

confidence: 86%

Hydrothermal Fabrication of High Specific Surface Area Mesoporous MgO with Excellent CO2 Adsorption Potential at Intermediate Temperatures

et al. 2017

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Abstract:In this work, we report on a novel sodium dodecyl sulfate (SDS)-assisted magnesium oxide (MgO)-based porous adsorbent synthesized by hydrothermal method for intermediate CO 2 capture. For industrial MgO, its CO 2 adsorption capacity is normally less than 0.06 mmol g −1 , with a specific surface area as low as 25.1 m 2 g −1 . Herein, leaf-like MgO nanosheets which exhibited a disordered layer structure were fabricated by the introduction of SDS surfactants and the control of other synthesis parameters. This leaf-like MgO adsorbent showed an excellent CO 2 capacity of 0.96 mmol g −1 at moderate temperatures (~300 • C), which is more than ten times higher than that of the commercial light MgO. This novel mesoporous MgO adsorbent also exhibited high stability during multiple CO 2 adsorption/desorption cycles. The excellent CO 2 capturing performance was believed to be related to its high specific surface area of 321.3 m 2 g −1 and abundant surface active adsorption sites. This work suggested a new synthesis scheme for MgO based CO 2 adsorbents at intermediate temperatures, providing a competitive candidate for capturing CO 2 from certain sorption enhanced hydrogen production processes.

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Section: Characterization Of Sds-assisted Mgomentioning

confidence: 86%

Hydrothermal Fabrication of High Specific Surface Area Mesoporous MgO with Excellent CO2 Adsorption Potential at Intermediate Temperatures

et al. 2017

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“…The bands at 3697 and 3624 cm À1 are attributed to multi-coordinate hydroxyl groups [17]. A shoulder band at around 3641-3455 cm À1 indicates the presence of four-coordinate hydroxyl groups interacting with surface O LC 2 À ions [3,18]. The bands around 3400 and 1659 cm À1 could be assigned to the stretching and bending vibrations of the O-H group and adsorbed water.…”

Section: Optical Characterizationmentioning

confidence: 98%

Synthesis and characterization of MgO nanocrystals for biosensing applications

Qiu

et al. 2015

Journal of Alloys and Compounds

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“…6,7 In recent years, numerous studies have demonstrated that the performance of MgO is highly influenced by its morphologies. 5,[8][9][10][11] For example, many reports have evidenced that the catalytic performance of MgO was closely related to its shape, illustrating an apparent morphologydependent phenomenon. 9 Sutradhar et al observed that the extent of the catalytic properties of MgO was highly controlled by its morphology.…”

Section: Introductionmentioning

confidence: 99%

Controlled synthesis of mesocrystal magnesium oxide parallelogram and its catalytic performance

et al. 2015

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Mesocrystal magnesium oxide (MgO) parallelogram with lengths of diagonal line in the range of 7-9 μm has been synthesized through a facile precipitation method by using phosphate species as the morphology regulator and MgĲNO 3 ) 2 and Na 2 C 2 O 4 as the inorganic sources. Scanning electronic microscope examination revealed that there is a canyon in the middle of the diagonal line of the as-synthesized products. The canyon resulted from the self-assembly of layer-like structures with a thickness of around 100-150 nm on both sides. To investigate the effect of reaction conditions on the morphologies and components of the resulting products, the types and addition amount of phosphate species and the reaction temperature were studied in detail. The results demonstrated that the introduction of trace amounts of phosphate species in the reaction system played a crucial role in determining the morphologies of the obtained products with variation of reaction temperatures, whereas their components have little been influenced after analyses by Fourier-transform infrared spectroscopy and X-ray diffraction. When assynthesized mesocrystal MgO was employed as a catalyst in the Meerwein-Ponndorf-Verley (MPV) reaction between benzaldehyde and ethanol, it demonstrated superior performance to MgO particles without the presence of phosphate species.

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Controlled Synthesis of Different Morphologies of MgO and Their Use as Solid Base Catalysts

Cited by 163 publications

References 59 publications

Hydrothermal Fabrication of High Specific Surface Area Mesoporous MgO with Excellent CO2 Adsorption Potential at Intermediate Temperatures

Hydrothermal Fabrication of High Specific Surface Area Mesoporous MgO with Excellent CO2 Adsorption Potential at Intermediate Temperatures

Synthesis and characterization of MgO nanocrystals for biosensing applications

Controlled synthesis of mesocrystal magnesium oxide parallelogram and its catalytic performance

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