Characterizations of the thermal decomposition of brucite prepared by sol–gel technique for synthesis of nanocrystalline MgO

Wang, Jinan; Novaro, O.; Bokhimi, X.; López, T.; Gómez, R.; Navarrete, Juan T. López; Llanos, M. E.; López-Salinas, E.

doi:10.1016/s0167-577x(97)00273-5

Cited by 122 publications

(70 citation statements)

References 19 publications

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“…No mineral impurities were identified by EDX with the processed mineral sample. Characterization by TGA-MS indicated a weight loss of 31.64% between the temperature interval of 25 and 700°C, consistent with a calculated 31.04% weight loss for pure brucite (Wang et al, 1998). The specific surface area of the 20-32 lm fraction, measured by nitrogen BET, was 3.8 m 2 g À1 .…”

Section: Methodssupporting

confidence: 75%

Brucite [Mg(OH2)] carbonation in wet supercritical CO2: An in situ high pressure X-ray diffraction study

Schaef

Windisch

McGrail

et al. 2011

Geochimica et Cosmochimica Acta

107

112

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Section: Methodssupporting

confidence: 75%

Brucite [Mg(OH2)] carbonation in wet supercritical CO2: An in situ high pressure X-ray diffraction study

Schaef

Windisch

McGrail

et al. 2011

Geochimica et Cosmochimica Acta

107

112

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“…2.The diffractograms recorded at 298 K correspond to the magnesium hydroxides obtained from the parent magnesium oxides. In the case of magnesium hydroxide resulting from MgO(I) ( alsolead to the formation of metastable species and larger amount of crystalline defects [19], usually considered as responsible of basic sites.…”

Section: Results Andmentioning

confidence: 99%

“…This high surface area of hsMgO(I) sample can be also explained according to its crystallographic transformation.It was reported that in the formation of periclase, bydehydroxylationof brucite, structural oxygen vacancies are formed by the removal ofwater [19]. This generation of structural defectsbecomes more important when the process is faster.…”

Section: Morphological Characterisationmentioning

confidence: 99%

Consequences of MgO activation procedures on its catalytic performance for acetone self-condensation

León

Faba

Dı́az

et al. 2014

Applied Catalysis B: Environmental

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A new procedure for increasing surface area and basicity of MgO has been developed in this work, leading to a tailored catalyst for the self-condensation of acetone. The preparation method, consisting on the hydration/dehydration of periclase, was optimized varying theactivation procedures. The effect of the precursor (magnesium oxide or magnesium carbonate) and the thermal treatment on the morphological properties and the basic sites distribution was characterised.In particular, CO 2 calorimetry data attributed the increase of basic sites mainly to the increase in surface area. Thematerial was tested for the base-catalyzedself-condensation ofacetone, obtaining high conversions and selectivities towards the products of most industrial value, the isophorones. The selectivity reached to trimers at 723 K was almost 50 %, and towards isophorones, of more than 30 %.

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“…Recently, researchers used several methods for the synthesis of MgO nanoparticles with different geometric shapes, as nano-fibers, nano-plates, nanowires and volumetric porous nanostructures [4,5,9,10]. On the other hand, CNTs due to their total unique properties e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanotubes support on band gap energy of MgO nanoparticles

Sohrabi

Taleshi

Sohrabi

2014

J Mater Sci: Mater Electron

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In this study, the effect of carbon nanotube supports (CNT) on the morphology and band gap of MgO nanoparticles was studied. The synthesis of MgO nanoparticles on the surface of CNT supports was carried out by direct precipitation method and using magnesium nitrate in aqueous solutions containing CNT. The prepared samples were characterized using X-ray diffraction. The optical properties of the nanoparticles were studied using UV-Vis spectrometer. The results indicated that the presence of CNTs decrease the average size of the MgO nanoparticles. Also the use of CNTs as support has reduced the band gap energy of MgO nanoparticles, considerably.

show abstract

Characterizations of the thermal decomposition of brucite prepared by sol–gel technique for synthesis of nanocrystalline MgO

Cited by 122 publications

References 19 publications

Brucite [Mg(OH2)] carbonation in wet supercritical CO2: An in situ high pressure X-ray diffraction study

Brucite [Mg(OH2)] carbonation in wet supercritical CO2: An in situ high pressure X-ray diffraction study

Consequences of MgO activation procedures on its catalytic performance for acetone self-condensation

Effect of carbon nanotubes support on band gap energy of MgO nanoparticles

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