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Strelko, V. V.; Gerasimenko, N. V.; Kartel, N. T.

doi:10.1023/a:1010422008355

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…The interpretation of the first and fourth bands is conventional 3650-3680 cm −1 is assigned to inner silanols which are inaccessible for adsorbed molecules. However, other authors [38] assumed that the band at 3680 cm −1 corresponds to adsorbed water molecules (i) forming a donor-acceptor bond with the Si atoms in ≡SiOH groups or (ii) adsorbed in very narrow pores at R < 1 nm [39]. It is believed that the band at 3500-3550 cm −1 is linked with silanols forming the hydrogen bonds [1-5,37].…”

Section: Resultsmentioning

confidence: 99%

Interaction of poly(ethylene oxide) with fumed silica

Воронин

Gun'ko

Guzenko

et al. 2004

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Interaction of poly(ethylene oxide) with fumed silica

Воронин

Gun'ko

Guzenko

et al. 2004

Journal of Colloid and Interface Science

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“…Phosphorous-containing carbons [referred to as Carbon-P and (A)Carbon-P (activated)], respectively, were prepared from porous spherical phenol-formaldehyde resin [16] phosphorylated by refluxing in a phosphorous oxychloride solution in toluene. The phosphorous content in the Carbon-P samples was approximately 7% measured either by elemental analysis or by the molybdate blue method [18].…”

Section: Materials Synthesismentioning

confidence: 99%

Catalytic performance of carbonaceous materials in the esterification of succinic acid

Clark

Budarin

Dugmore

et al. 2008

Catalysis Communications

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Mesoporous carbonaceous materials have outstanding potential in many different applications such as adsorption, medicine and catalysis. We have recently reported the synthesis of a new form of mesoporous carbon, named Starbon((R)), obtained after low temperature carbonization of expanded starch. Such starch-derived mesoporous materials have several tunable properties including surface energies (ranging from hydrophilic to hydrophobic surfaces), which can be easily controlled by the degree of carbonization (from 200 to 700 degrees C). Due to the diversity of surface functional groups, Starbons((R)) can be easily chemically modified. Treatment of Starbon((R)) materials with sulfuric acid gave a solid acid that has promising properties as heterogeneous catalyst. Comparative catalytic studies with some other similar commercial carbonaceous materials such as DARCO((R)) and NORIT (R), as well as phosphorous-containing microporous carbons, are reported. (c) 2008 Elsevier B.V. All rights reserved

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“…The alkali metal is immobilized within the spatial frame work of activated carbon even in the samples washed off the alkali, as demonstrated for the interaction of coke with NaOH using 23 Na NMR spectroscopy [18] and for the soot-К 2 СО 3 system at a potassium con centration of smaller than 5% in carbon substances [72]. Simultaneously with this, the M 0 and М + guest particles separated polyarene layers, facilitated the spatial disordering of lattice fragments, and, as a result, increased the volume of micropores (≤2 nm) [78,88]. The intercalation of alkali metals into graphite implies the initial electron transfer from the M atoms to С n graphenes with the formation of anions or radi cal anions [51].…”

Section: =Ch-om + H 2 C= → =Ch-ch= + Moh (24)mentioning

confidence: 87%

“…Electron trans fer from a polyarene to the М + cation leads to the for mation of a radical cation, which can substantially increase the reactivity of carbon substances [78]. At the same time, Sancier [44], who performed a study by in situ EPR spectroscopy (t ≤ 700°C, did not reveal sub stantial changes in the concentration of radicals.…”

Section: =Ch-om + H 2 C= → =Ch-ch= + Moh (24)mentioning

confidence: 97%

Alkaline activation of coals and carbon-base materials

2014

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Data on the reactions and processes occurring under the conditions of the alkaline activation of carbon substances-the production of activated carbons by the thermolysis of carbon substances in the pres ence of alkali metal hydroxides MOH-are summarized. The following most important activation processes were recognized: (1) the interaction of functional groups with MOH and the formation of intermediate struc tures with the C-O-M group;(2) their conversion into metal containing compounds (primarily, M 2 CO 3 and M 2 O) in reactions with carbon, especially, with terminal C atoms on the periphery of graphenes; and (3) the reduction of M 2 CO 3 and M 2 O to the metal M, which is intercalated into the interlayer spaces of crystal lites. The mechanism of alkaline activation was studied in most detail for KOH as an activating agent. The thermally initiated reduction of potassium oxide with carbon and the intercalation of potassium metal are the two most important processes for the development of the microporosity of activated carbon.

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Untitled

Cited by 3 publications

References 3 publications

Interaction of poly(ethylene oxide) with fumed silica

Interaction of poly(ethylene oxide) with fumed silica

Catalytic performance of carbonaceous materials in the esterification of succinic acid

Alkaline activation of coals and carbon-base materials

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