In situ growth of layered double hydroxide films on anodic aluminum oxide/aluminum and its catalytic feature in aldol condensation of acetone

Lu, Zhi Hong; Zhang, Fazhi; Lei, Xiaodong; Yang, Lan; Xu, Sailong; Duan, Xue

doi:10.1016/j.ces.2008.05.007

Cited by 87 publications

(25 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, the improved activity in catalyst HT/rGO-10CFD may also be due to the highly dispersed nanosized HT platelets as observed in XRD and HRTEM analysis. Such observations would be consistent with the hypothesis that the number of active sites is determined by the lateral size of the HT platelets [5][6][7][8][9]11,12 .…”

Section: Acetone Self-condensationsupporting

confidence: 78%

“…Recently, other approaches have been developed based on the dispersion of the HT phase on different supports leading to HT nanocomposites. 5,6,7,8,9 The combination of (nano)carbon supports and HTs can lead to catalysts with improved properties such as high mechanical strength, surface area, thermal conductivity and chemical reactivity provided both by the carbon nanostructure and the HTs. For example, HT/CF nanocomposites obtained by growing MgAlHTs in situ on carbon fibers (CF) were efficient catalysts for the transesterification reaction of glycerol with diethyl carbonate into glycerol carbonate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Role of the synthesis route on the properties of hybrid LDH-graphene as basic catalysts

Álvarez

Tichit

Medina

et al. 2017

Applied Surface Science

View full text Add to dashboard Cite

Layered double hydroxides (LDH or HT) or their derived mixed oxides present marked acid-base properties useful in catalysis, but they tend to agglomerate inducing a weak accessibility to the active sites. In this study we report the preparation and characterization of HT/Graphene (HT/rGO) nanocomposites as active and selective basic catalysts for the acetone condensation reaction. The graphene high specific surface area and structural compatibility with the HT allowed increasing the number and accessibility of the active sites and activity. Two series of HT/rGO nanocomposites with 0.5≤HT/rGO≤10 mass ratio were prepared by: i) direct HT coprecipitation in the presence of GO; ii) self-assembly of preformed HT with GO. The prepared HT/rGO nanocomposites were dried either in air at 80 °C or freeze-dried. A series of characterizations showed the great influence of the preparation method and HT/rGO mass ratio on both the nanocomposite structure and catalytic activity. An optimum activity was observed for a HT/rGO = 10 catalyst. Particularly, the highest catalytic activity was found in those nanocomposites obtained by coprecipitation and freeze dried (3 times more active than bulk HT) which can be connected to their structure with a better accessibility to the basic sites.2

show abstract

Section: Acetone Self-condensationsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Role of the synthesis route on the properties of hybrid LDH-graphene as basic catalysts

Álvarez

Tichit

Medina

et al. 2017

Applied Surface Science

View full text Add to dashboard Cite

show abstract

“…Substrates such as metal sheets [16,17], metal alloys [18,19], porous anodic alumina/ aluminum [20], glass [21], sulfonated polystyrene [22], boehmitecoated materials [23] and Al 2 O 3 -coated materials [24] have been utilized to prepare LDH films by this method, which have the good mechanical strength and high adhesion to the substrate. The LDH films have been employed as heterogeneous catalysts [25], anticorrosion coatings for metals [18], adsorbents [23], modified electrodes [26], components in optical or magnetic devices [27,28], and sensors [29]. However, there still remains a need for new functional LDH films.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and properties of Acid Yellow 49 dye-intercalated layered double hydroxides film on an alumina-coated aluminum substrate

Tang

Feng

2011

Dyes and Pigments

View full text Add to dashboard Cite

“…As a final example, after coating or immobilization onto an appropriate substrate, MgAl-LDH crystals can be fabricated into a structured catalyst. The catalytic efficiency of the material is superior to that of a powdered LDH with the same composition [28].…”

Section: Macrostructure Designmentioning

confidence: 98%

“…For example, a MgAl OHLDH was synthesized in situ on the surface of an aluminium metal substrate coated with a layer of porous anodic alumina (PAO). After calcination and activation, the resulting material exhibited excellent catalytic activity in aldol condensations [28].…”

Section: New Catalytic Materialsmentioning

confidence: 99%

Layered intercalated functional materials based on efficient utilization of magnesium resources in China

Lin

Evans

et al. 2010

Sci. China Chem.

Self Cite

View full text Add to dashboard Cite

Mg-based layered intercalated functional materials of the layered double hydroxide type are a significant class of magnesium compounds. Based on long-term studies of these materials in the State Key Laboratory of Chemical Resource Engineering in Beijing University of Chemical Technology, two principles of "using the intended application of a material as a guide to its structure design and synthesis process" and "the design of controlled intercalation processes in the light of future production processing requirements" have been developed. To achieve these objectives, the composition of the host layers and guest interlayer anions was tailored at the microlevel, while the mesostructure and macrostructure were controlled to fabricate different kinds of Mg-based layered intercalated functional materials. These materials have diverse applications in key areas such as catalysis, the environment, and construction, and as polymer additives. Therefore, China's magnesium resources may be utilized more efficiently for the benefit of society.Mg-based layered intercalated structure, functional material, magnesium resource, efficient utilization, structure design

show abstract

In situ growth of layered double hydroxide films on anodic aluminum oxide/aluminum and its catalytic feature in aldol condensation of acetone

Cited by 87 publications

References 48 publications

Role of the synthesis route on the properties of hybrid LDH-graphene as basic catalysts

Role of the synthesis route on the properties of hybrid LDH-graphene as basic catalysts

Fabrication and properties of Acid Yellow 49 dye-intercalated layered double hydroxides film on an alumina-coated aluminum substrate

Layered intercalated functional materials based on efficient utilization of magnesium resources in China

Contact Info

Product

Resources

About