Textural Characterization of Porous Carbons by Physical Adsorption of Gases

Linares‐Solano, A.

doi:10.1007/978-94-009-4382-7_5

Cited by 37 publications

(14 citation statements)

References 74 publications

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“…The lower conversion obtained for the oxidation of cyclohexene with the encapsulated catalysts (Table 4), compared to the homogeneous counterparts, could have [25,26] b Calculated by the t-method [31]. TBHP as an oxidant promotes the allylic oxidation pathway and epoxidation is minimized, especially under the acidic properties of zeolite encapsulated with divalent and trivalent transition metal ions and complexes, as also observed by us and others [32][33][34][35][36][37].…”

Section: Catalytic Activitymentioning

confidence: 63%

“…The samples were degassed at 150°C until a vacuum better than 10 -3 Pa was obtained. Micropore volumes were determined by the t-method; a ''monolayer equivalent area'' was calculated from the micropore volume [25,26]. The stability of the encapsulated catalyst was checked after the reaction by u.v.-vis., and possible leaching of the complex was investigated by u.v.-vis.…”

Section: Materials and Physical Measurementsmentioning

confidence: 99%

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Host (nanopores of zeolite-Y)/guest [manganese(II) with 12-membered tetradentate N2O2, N2S2 and N4 donor macrocyclic ligands] nanocatalysts: flexible ligand synthesis, characterization and catalytic activity

Salavati‐Niasari

2008

Transition Met Chem

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Mn(II) complexes of 12-membered macrocyclic ligands with three different donating atom sets (N 2 O 2 , N 2 S 2 and N 4 ) in the macrocyclic ring have been encapsulated in the nanopores of zeolite-Y by the Flexible-Ligand Method (FLM). The complexes were entrapped in the nanocavity of zeolite-Y by a two-step process in the liquid phase: (i) adsorption of 1,2-di(o-aminophenyl-, amino, oxo, thio) ethane in the supercages of the zeolite and (ii) in situ condensation of the Mn(II) precursor complex ([Mn(N 2 X 2 )] 2+ ) with glyoxal or biacetyl. The new host-guest nanocatalysts, [Mn([R] 2 -N 2 X 2 )] 2+ -NaY (R = H, CH 3 ; X = NH, O, S), have been characterized by various physico-chemical methods. These complexes, both in their free states and as host-guest nanocatalysts, were used for oxidation of cyclohexene with tert-butylhydroperoxide (TBHP) oxidant in different solvents. Di-2-cyclohexenylether was identified as the main product. 2-Cyclohexene-1-one, 2-cyclohexene-1-ol and 1-(tert-butylperoxy)-2-cyclohexene were obtained as minor products. [Mn([H] 2 -N 4 )] 2+ -NaY was found to give the best reactivity and selectivity.

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Section: Catalytic Activitymentioning

confidence: 63%

Section: Materials and Physical Measurementsmentioning

confidence: 99%

Host (nanopores of zeolite-Y)/guest [manganese(II) with 12-membered tetradentate N2O2, N2S2 and N4 donor macrocyclic ligands] nanocatalysts: flexible ligand synthesis, characterization and catalytic activity

Salavati‐Niasari

2008

Transition Met Chem

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“…In this sense, adsorption of CO2 carried out under low relative pressures (<0.03), and at higher temperatures, 0°C, can give us valuable information about this type of microporosity (Linares-Solano, 1986;Marsh, 1987;Rodríguez-Reinoso and Linares-Solano, 1988). Significant differences are found in CO2 adsorption isotherms at 0°C (Figure 2B).…”

Section: Materials Characterizationmentioning

confidence: 99%

Biomass Waste Carbon Materials as adsorbents for CO2 Capture under Post-Combustion Conditions

et al. 2016

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A series of porous carbon materials obtained from biomass waste have been synthesized, with different morphologies and structural properties, and evaluated as potential adsorbents for CO2 capture in post-combustion conditions. These carbon materials present CO2 adsorption capacities, at 25°C and 101.3 kPa, comparable to those obtained by other complex carbon or inorganic materials. Furthermore, CO2 uptakes under these conditions can be well correlated with the narrow micropore volume, derived from the CO2 adsorption data at 0°C ( ) V CO 2 DR . In contrast, CO2 adsorption capacities at 25°C and 15 kPa are more related to only pores of sizes lower than 0.7 nm. The capacity values obtained in column adsorption experiments were really promising. An activated carbon fiber obtained from Alcell lignin, FCL, presented a capacity value of 1.3 mmol/g (5.7%wt). Moreover, the adsorption capacity of this carbon fiber was totally recovered in a very fast desorption cycle at the same operation temperature and total pressure and, therefore, without any additional energy requirement. Thus, these results suggest that the biomass waste used in this work could be successfully valorized as efficient CO2 adsorbent, under post-combustion conditions, showing excellent regeneration performance.

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“…b A type IV deviation was noticed when the N2 adsorption data was analysed by the Dubinin method [19]; W01 and W02 are the micropore volumes associated to small and large micropores, respectively. c Average small micropores width (assuming split-shaped geometry) [20].…”

Section: Decolourisation Experimentsmentioning

confidence: 99%

Decolourisation of dye solutions by oxidation with H2O2 in the presence of modified activated carbons

Santos

Pereira

Faria

et al. 2009

Journal of Hazardous Materials

164

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Textural Characterization of Porous Carbons by Physical Adsorption of Gases

Cited by 37 publications

References 74 publications

Host (nanopores of zeolite-Y)/guest [manganese(II) with 12-membered tetradentate N2O2, N2S2 and N4 donor macrocyclic ligands] nanocatalysts: flexible ligand synthesis, characterization and catalytic activity

Host (nanopores of zeolite-Y)/guest [manganese(II) with 12-membered tetradentate N2O2, N2S2 and N4 donor macrocyclic ligands] nanocatalysts: flexible ligand synthesis, characterization and catalytic activity

Biomass Waste Carbon Materials as adsorbents for CO2 Capture under Post-Combustion Conditions

Decolourisation of dye solutions by oxidation with H2O2 in the presence of modified activated carbons

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