Synthesis and characterization of polyaniline composites with silica gel, styrene-divinyl benzene resin beads, calcium alginate and tetraethoxy silane substrates

In situ formation of two cyclic (alkyl) (amino) carbenes (CAACs) followed by addition of BF3•Et2O provided the first two examples of CAAC–BF3 complexes: 1-(2,6-diisopropylphenyl)-3,5,5-trimethyl-3-phenylpyrrolidin-2-ylidene trifluoroborane, and 2-(2,6-diisopropylphenyl)-3,3-dimethyl-2-azaspiro[4.5]decan-1-ylidene trifluoroborane. These CAAC–BF3 complexes are robust compounds that are stable to ambient laboratory conditions and silica gel chromatography. They were characterized by spectroscopy and X-ray crystallography. In contrast, a CAAC complex with borane (BH3) was readily formed in situ according to 1H and 11B NMR analysis, but did not survive the workup conditions. These results set the stage for further studies of the chemistry of CAAC boranes.

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Synthesis and Characterization of Lipophilic Organotins. Application to the Functionalization of Silica Gel

Organometallics ◽

10.1021/om700534j ◽

2007 ◽

Vol 26 (23) ◽

pp. 5576-5580 ◽

Cited By ~ 3

Author(s):

Marie-Laurence Dumartin ◽

Hicham El Hamzaoui ◽

Bernard Jousseaume ◽

Marie-Claude Rascle ◽

Thierry Toupance ◽

...

Keyword(s):

Silica Gel ◽

Synthesis And Characterization

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Synthesis and characterization of silica gel from Lapindo mud Sidoarjo

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/456/1/012007 ◽

2020 ◽

Vol 456 ◽

pp. 012007

Author(s):

A Rahmayanti ◽

Q A’yuni ◽

H Hartati ◽

P Purkan ◽

I G Romanza

Keyword(s):

Silica Gel ◽

Synthesis And Characterization

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Study and Characterization of Powders Nanocomposites Calcium Phosphate/Silica-Gel (SiO2n) Obtained from Attrition Milling: For Biomedical Applications

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.396-398.615 ◽

2008 ◽

Vol 396-398 ◽

pp. 615-618

Author(s):

Rodrigo Brandão ◽

Fernando Pupio ◽

Nelson Heriberto A. Camargo ◽

E. Gemelli

Keyword(s):

Calcium Phosphate ◽

Silica Gel ◽

Biomedical Applications ◽

Bone Matrix ◽

Synthesis And Characterization ◽

X Ray Diffraction ◽

X Ray ◽

Attrition Milling ◽

Bone Calcium

The bioceramics nanostructured have made important characteristics in biomedical applications, especially the calcium phosphate ceramics. The aim of this work is synthesis and characterization of calcium phosphate and nanocomposites powders, the method of dissolution of CaO in liquid medium, precipitation and formation of bone calcium phosphate matrix, and nanocomposites by adding the solution of phosphoric acid (H3PO4). The nanocomposites powders were synthesized using as strengthening silica gel nanometer (20nm) at concentrations of 1%, 2%, 3% and 5% by volume and subjected to heat treatment to 900°C for 2 hours, seeking obtained HA (Hydroxyapatite). Later the bone matrix of calcium phosphate and nanocomposites powders were subjected from process attrition milling for 2 hours, by way of comparison. The studies characterizations were conducted through the technique of X-ray diffraction, scanning electron microscopy (SEM) and dilatometric test.

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Synthesis and Characterization of Andalusite/Polyaniline Composites

Materials Science Forum ◽

10.4028/www.scientific.net/msf.675-677.295 ◽

2011 ◽

Vol 675-677 ◽

pp. 295-298

Author(s):

Liang Shao ◽

Jian Hui Qiu ◽

Ming Zhu Liu ◽

Hui Xia Feng ◽

Guo Hong Zhang ◽

...

Keyword(s):

Electron Microscopy ◽

Thermal Stability ◽

Scanning Electron Microscopy ◽

Synthesis And Characterization ◽

Conducting Phase ◽

Polyaniline Composites ◽

Inorganic Substrate ◽

Thermal Stability Of ◽

Scanning Electron

New types of conducting composites using andalusite as an inorganic substrate and polyaniline as the conducting phase were prepared. The composites exhibited conductivities in the 0.14-2.08 S/cm range, depending on the amount of polyaniline. The thermal stability of andalusite/polyaniline composites were studied by thermogravimetric analysis. The resulting composites were also characterized by using FTIR spectroscopy and scanning electron microscopy.

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Synthesis and characterization of amine-impregnated silica gel for potential carbon dioxide (CO2) absorption

Journal of Physics Conference Series ◽

10.1088/1742-6596/1349/1/012100 ◽

2019 ◽

Vol 1349 ◽

pp. 012100

Author(s):

N F Mohamad ◽

N H Abdul Rani ◽

M Onn ◽

S I Sayed Jamaludin ◽

A S I Ahmad Shafiq ◽

...

Keyword(s):

Carbon Dioxide ◽

Silica Gel ◽

Synthesis And Characterization ◽

Co2 Absorption ◽

Carbon Dioxide Co2 ◽

Potential Carbon

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Synthesis and Characterization of Composite Structure Zeolite Y

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.233-235.1790 ◽

2011 ◽

Vol 233-235 ◽

pp. 1790-1793 ◽

Cited By ~ 1

Author(s):

Wei Shen ◽

Bao Jian Shen

Keyword(s):

Silica Gel ◽

Composite Structure ◽

Zeolite Y ◽

Synthesis And Characterization ◽

Organic Additives ◽

X Ray Diffraction ◽

Y Zeolite ◽

X Ray

Y zeolite was synthesized form silica gel microsphere by in- situ hydrothermal method, with appropriate amount of other constituents, such as sodium silicate, water, without adding any organic additives. The as-synthesized samples were characterized using powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 sorption. The results show that the synthesized sample not only has a composite structure with zeolite Y and silica gel, but also retains the shape of silica gel microsphere. The pore distribution of the composite materials indicated that the composite material contains two types of pore that are micropores and large pores.

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