The adsorption of water by Saran charcoal

Dacey, J. R.; Clunie, J. C.; Thomas, D. G.

doi:10.1039/tf9585400250

Cited by 56 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isotherms for these samples are type-I patterns, which is typical of microporous solids (Figure S1 A). [10] MC andS O 3 H-MC have similar isotherms to that of the Y-zeolite, suggesting that the microporous structure formed in the sulfonated samples also reflects the originalYzeolite structure. The BET surface area of SO 3 H-MC was estimated to be % 2000 m 2 g…”

Section: Resultsmentioning

confidence: 59%

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO₃H Groups

et al. 2015

View full text Add to dashboard Cite

SO3H‐bearing microporous amorphous carbon with a large BET surface area (≈2000 m2 g−1) and a high density of SO3H groups (0.5 mmol g−1) was investigated as a solid acid catalyst for the transesterification of triolein and esterification of oleic acid with methanol. The separable and reusable carbon catalyst exhibits higher catalytic performance for both reactions than conventional homogeneous and heterogeneous acid catalysts, including sulfuric acid, at 353 K. This carbon catalyst can provide methyl oleate yields over 99 %, even in a triolein–oleic acid mixture that resembles a crude vegetable oil, owing to efficient transesterification and esterification reactions. The carbon material is sufficiently hydrophobic to be distributed throughout the hydrophobic triolein phase, resulting in high catalytic performance for both reactions.

show abstract

Section: Resultsmentioning

confidence: 59%

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO₃H Groups

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The surface of the graphite is generally hydrophobic, [14] and, therefore, the H 2 O vapor adsorption-desorption isotherm of pure graphitic carbon at 328 K had a well-defined type-III character, for which the amount of adsorbed H 2 O was small at low P/P 0 (< 0.2) and steeply increased at P/P 0 = 0.5-0.6. [15] The strong affinity of CCSA-673 and 723 for H 2 O is clearly derived from the large amounts of hydrophilic functional groups. The hysteresis loop in the isotherms of CCSA-673 and 723 also supported the strong affinity for water.…”

mentioning

confidence: 99%

Structure and Catalysis of Cellulose‐Derived Amorphous Carbon Bearing SO₃H Groups

et al. 2011

View full text Add to dashboard Cite

The correlation between catalytic performance and structure of a cellulose-derived and carbon-based solid acid (CCSA), an amorphous carbon bearing SO(3)H, COOH, and phenolic OH groups, was investigated. Sulfonation of partially carbonized cellulose under a N(2) atmosphere resulted in the formation of a CCSA, which was amorphous carbon consisting of small polycyclic aromatic carbon sheets with a high density of SO(3)H groups (ca. 2 mmol g(-1)). CCSAs were prepared from carbon precursors, which were obtained at temperatures ≤723 K, and exhibited a high catalytic performance for the esterification of acetic acid with ethanol and for the hydrolysis of cellobiose, although the surface areas were small (<5 m(2) g(-1)). In contrast, CCSAs, which were prepared from carbon precursors obtained at ≥823 K, exhibited much lower catalytic activities for both reactions, although the CCSAs had sufficient amounts of SO(3)H groups. Structural analyses, including spectroscopic analysis of CCSAs with adsorbed probe molecules, revealed that cross-linking between the polycyclic aromatic carbon sheets caused the sharp decrease in activity.

show abstract

“…Earlier studies [33,[41][42][43][44] have reported information on the shapes of water vapour adsorption isotherms for chars, which are in general different in comparison with activated carbons. Investigations by Dacey et al [41,42] on the adsorption of water vapour by Saran charcoal at different temperatures reported well-defined isotherms of type V with a steep increase at a medium relative pressure (p/p 0 ≈ 0.5-0.6).…”

Section: Shape Of the Adsorption Isothermsmentioning

confidence: 98%

Adsorption–desorption of water vapour on chars prepared from commercial wood charcoals, in relation to their chemical composition, surface chemistry and pore structure

Pastor-Villegas

Rodríguez

Pastor-Valle

et al. 2010

Journal of Analytical and Applied Pyrolysis

View full text Add to dashboard Cite

The adsorption of water by Saran charcoal

Cited by 56 publications

References 0 publications

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO₃H Groups

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO₃H Groups

Structure and Catalysis of Cellulose‐Derived Amorphous Carbon Bearing SO₃H Groups

Adsorption–desorption of water vapour on chars prepared from commercial wood charcoals, in relation to their chemical composition, surface chemistry and pore structure

Contact Info

Product

Resources

About

The adsorption of water by Saran charcoal

Cited by 56 publications

References 0 publications

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO3H Groups

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO3H Groups

Structure and Catalysis of Cellulose‐Derived Amorphous Carbon Bearing SO3H Groups

Adsorption–desorption of water vapour on chars prepared from commercial wood charcoals, in relation to their chemical composition, surface chemistry and pore structure

Contact Info

Product

Resources

About

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO₃H Groups

Transesterification of Triolein over Hydrophobic Microporous Carbon with SO₃H Groups

Structure and Catalysis of Cellulose‐Derived Amorphous Carbon Bearing SO₃H Groups