The reaction of naphthalene with benzyl alcohol over a Nafion-silica composite: a kinetic study

Beltrame, P.; Zuretti, Giovanni

doi:10.1016/s0926-860x(03)00149-2

Cited by 16 publications

(21 citation statements)

References 21 publications

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“…It is to be noted that previously [1] we did not recognize the peculiar nature of the reaction (3), with its empirical rate equation of order −1, having used numerators with C 2 BzOH , not with C BzOH . Although this did not prevent the interpretation of the runs at 80 • C, the present revised treatment improves such interpretation.…”

Section: Conversion Of Bzoh To Bzobzmentioning

confidence: 91%

“…Experimental procedures, including the use of a slurry batch reactor and gas-chromatographic analysis, were essentially those already described [1]. To study the conversion of BzOH to BzOBz, six runs were carried out at 65 and six at 80 • C, having C 0 BzOH from 0.06 to 0.15 mol/l, C cat = 2 g/l.…”

Section: Methodsmentioning

confidence: 99%

“…For the NA benzylation reaction, six runs were carried out at each temperature, with C 0 NA from 0.20 to 0.30 mol/l, C 0 BzOH from 0.03 to 0.07 mol/l, C cat = 2 g/l. With regard to reactivity at 80 • C, the previous twelve runs NA + BzOH were employed [1]. The reactions Nomenclature C i molar concentration of i (mol/l) C Bz concentration of benzyl groups in the benzylating agents (=C BzOH + 2C BzOBz ) C cat weight concentration of catalyst (g/l) E act activation energy, from k coefficients (kJ/mol) F objective function in the optimization procedure H ads adsorption enthalpy, from K coefficients (kJ/mol) k am , k ad , apparent rate coefficients k em , k ed (l 2 /(mol min g)) k am , k ad , surface reaction rate coefficients k em , k ed , k ef (mol/(min g)) k ef apparent rate coefficient (l/(min g)) k p empirical rate coefficient (mol 2 /(l min g)) K BzA , K BzE , adsorption coefficients (l/mol)…”

Section: Methodsmentioning

confidence: 99%

“…Using an optimization procedure already described [1], the experimental results were correlated by Eqs. (8) and (9), obtaining the values shown in Table 1, with a good fit as shown in the example of Fig.…”

Section: Conversion Of Bzoh To Bzobzmentioning

confidence: 99%

“…We studied, from a kinetic point of view, the reaction of naphthalene (NA) with benzyl alcohol (BzOH) over a Nafion-silica composite in liquid phase with solvent cyclohexane at a single temperature (80 • C) [1]. This was done to enable comparison with previous studies on similar benzylations (with benzyl chloride) carried out at 80 • C [2].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Kinetics of the reaction of naphthalene with benzyl alcohol over a Nafion$minus;silica composite, as a function of temperature

Beltrame

Zuretti

2004

Applied Catalysis A: General

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Section: Conversion Of Bzoh To Bzobzmentioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Conversion Of Bzoh To Bzobzmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetics of the reaction of naphthalene with benzyl alcohol over a Nafion$minus;silica composite, as a function of temperature

Beltrame

Zuretti

2004

Applied Catalysis A: General

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Superacid‐Catalyzed Reactions

Oláh¹,

Prakash²,

Molnár³

et al. 2008

Superacid Chemistry

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Preparation of Glycerol Carbonate Esters by using Hybrid Nafion–Silica Catalyst

et al. 2013

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Glycerol carbonate esters (GCEs) which are valuable biomass derivative compounds have been prepared by direct esterification starting from glycerol carbonate and long organic acids with different chain length, in absence of solvent and using acid organic resins, zeolites and hybrid organic-inorganic acid catalysts as heterogeneous catalysts.The best results in terms of activity and selectivity to glycerol carbonate esters have been obtained using a Nafion-silica composite. A full reaction scheme has been established and it has been found that an undesired competing reaction is the generation of glycerol and esters derived from a secondary hydrolysis of the endocyclic ester group due to water formed during the esterification reaction. The influence of temperature, substrates ratio, catalyst to substrate ratio and use of solvent has been studied and, under optimized reaction conditions and the adequated catalyst, it is possible to achieve 95% selectivity to the desired product at 98% conversion. It was found that reaction rate decreased as the number of carbons in the linear alkyl chain of the carboxylic acid increases for both p-toluenesulfonic acid and Nafion SAC-13. Fitting experimental data to a mechanistically based kinetic model, the reaction kinetic parameters for Nafion SAC-13 catalysis were determined and compared when reacting different carboxylic acids. A kinetic study showed that the lower reactivity of the carboxylic acid when increasing the chain length can be explained by inductive as well as steric effects.2

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The reaction of naphthalene with benzyl alcohol over a Nafion-silica composite: a kinetic study

Cited by 16 publications

References 21 publications

Kinetics of the reaction of naphthalene with benzyl alcohol over a Nafion$minus;silica composite, as a function of temperature

Kinetics of the reaction of naphthalene with benzyl alcohol over a Nafion$minus;silica composite, as a function of temperature

Superacid‐Catalyzed Reactions

Preparation of Glycerol Carbonate Esters by using Hybrid Nafion–Silica Catalyst

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