Characterisation of layered double hydroxides and their decomposition products

Rives, V.

doi:10.1016/s0254-0584(02)00024-x

Cited by 356 publications

(184 citation statements)

References 36 publications

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“…The XRD diffractograms corresponding to the calcined catalysts (Fig. 1b), show two main reflections at 43°and 64°2h, ascribed to Mg(Ni,Al)O mixed oxides with periclase structure formed upon thermal decomposition of hydrotalcite materials [37,38]. Additionally, for all Ce-promoted catalysts low intensity reflections observed at ca.…”

Section: Resultsmentioning

confidence: 94%

Catalytic activity of hydrotalcite-derived catalysts in the dry reforming of methane: on the effect of Ce promotion and feed gas composition

Dębek

Motak

Gálvez

et al. 2017

Reac Kinet Mech Cat

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Ni/Al and Ni/Mg/Al hydrotalcite-derived materials containing various Ni loadings were synthesized and subsequently promoted with Ce-species via adsorption from [Ce(EDTA)] -complexes. The obtained materials were characterized by elemental analysis (ICP-MS), XRD, H 2 -TPR, CO 2 -TPD, TG and low temperature N 2 sorption experiments. The amount of the introduced Ce was dependent on the nickel and magnesia content in catalysts precursors, and it influenced materials properties (i.e. basicity, reducibility of Ni species) in various ways and the catalytic performance in the dry reforming of methane (DRM). The promoted catalysts showed improved performance with CH 4 and CO 2 conversions at 550°C in the range of 35-55 and 35-45%, respectively. The extent of the improvement was dependent on the nickel content and the presence of magnesia. In general, Ce promotion increased materials stability by changing of the type of carbonaceous deposits. Ce modification hindered the transformation of amorphous carbonaceous deposits to graphitic carbon. The former may be easier oxidized and contribute to syngas production. Two selected catalysts were additionally tested in DRM at elevated temperatures (650 and 750°C) and over various feed gas compositions.

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Section: Resultsmentioning

confidence: 94%

Catalytic activity of hydrotalcite-derived catalysts in the dry reforming of methane: on the effect of Ce promotion and feed gas composition

Dębek

Motak

Gálvez

et al. 2017

Reac Kinet Mech Cat

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“…is the exchangeable anion (usually carbonate, chloride or nitrate) and 0.2 < x < 0.33 [8][9][10][11][12][13].…”

Section: +mentioning

confidence: 99%

Anionic and Cationic Dyes Removal from Aqueous Solutions by Adsorption onto Synthetic Mg/Al Hydrotalcite-Like Compound

Heraldy¹,

Santosa²,

Triyono³

et al. 2015

Indones. J. Chem.

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“…This reasons due to pH of the solution which is regularly increase to pH 9, at which metal hydroxides precipitation occurs; or layered double hydroxides produces when more than one metal salt is present. Carbonate is the only interlayer anion utilizing these urea technique [8]. The interlayer anion which have selected (instead of urea process), and also be available in solution.…”

Section: Urea Processmentioning

confidence: 99%

Synthesising methods of layered double hydroxides and its use in the fabrication of dye Sensitised solar cell (DSSC): A short review

George

Saravanakumar

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The layered double hydroxides (LDH) which are anionic clay substances comprising of stacked cationic layers and interlayer anions. The cationic sheets contain octahedral structure consisting the divalent and trivalent ions in the center and hydroxyl bunches in the corners, gathered by three bonding with the neighbouring octahedra on every side of the layer. The ratio between the quantity of cations and OH − ions is 2:1, so a positive charge shows up on the layer because of the presence of trivalent cations. The interlayer space gives the compensation anions and water molecules, assuring a balanced out layered structure. The LDH materials were successfully synthesised from magnesium, aluminium, zinc and chromium chloride salts utilizing the co-precipitation technique. A Zn-Al LDH was researched as a potential sorbent material. This article reviews the recent advances in the preparation and intercalation of layered double hydroxides and its application in the fabrication of Dye Sensitized Solar Cell (DSSC).

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Characterisation of layered double hydroxides and their decomposition products

Cited by 356 publications

References 36 publications

Catalytic activity of hydrotalcite-derived catalysts in the dry reforming of methane: on the effect of Ce promotion and feed gas composition

Catalytic activity of hydrotalcite-derived catalysts in the dry reforming of methane: on the effect of Ce promotion and feed gas composition

Anionic and Cationic Dyes Removal from Aqueous Solutions by Adsorption onto Synthetic Mg/Al Hydrotalcite-Like Compound

Synthesising methods of layered double hydroxides and its use in the fabrication of dye Sensitised solar cell (DSSC): A short review

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