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Montmorillonite for selective hydroxyalkylation of p-cresol

Garade, A.C. / Mate, V.R. / Rode, C.V.

AbstractPerformances of montmorillonite titanium silicate (TS-1) and dodecatungstophosphoric acid (DTP) were compared for the hydroxyalkylation of p-cresol into dihydroxydiarylmethane (DAM). Ammonia TPD studies of various catalysts showed that an appropriate combination of both strong and weak acid sites of montmorillonite was mainly responsible rather than only the stronger acidity of bulk DTP for its highest catalytic activity for selective hydroxyalkylation of p-cresol to DAM. The selectivity to DAM could be enhanced by adjusting reaction conditions like mole ratio of p-cresol to formaldehyde, reaction temperature, catalyst concentration, solvent and reaction time.

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Montmorillonite for selective hydroxyalkylation of p-cresol

Garade, A.C. / Mate, V.R. / Rode, C.V.

AbstractPerformances of montmorillonite titanium silicate (TS-1) and dodecatungstophosphoric acid (DTP) were compared for the hydroxyalkylation of p-cresol into dihydroxydiarylmethane (DAM). Ammonia TPD studies of various catalysts showed that an appropriate combination of both strong and weak acid sites of montmorillonite was mainly responsible rather than only the stronger acidity of bulk DTP for its highest catalytic activity for selective hydroxyalkylation of p-cresol to DAM. The selectivity to DAM could be enhanced by adjusting reaction conditions like mole ratio of p-cresol to formaldehyde, reaction temperature, catalyst concentration, solvent and reaction time.

Montmorillonite for selective hydroxyalkylation of p-cresol

Garade, A.C. / Mate, V.R. / Rode, C.V.

AbstractPerformances of montmorillonite titanium silicate (TS-1) and dodecatungstophosphoric acid (DTP) were compared for the hydroxyalkylation of p-cresol into dihydroxydiarylmethane (DAM). Ammonia TPD studies of various catalysts showed that an appropriate combination of both strong and weak acid sites of montmorillonite was mainly responsible rather than only the stronger acidity of bulk DTP for its highest catalytic activity for selective hydroxyalkylation of p-cresol to DAM. The selectivity to DAM could be enhanced by adjusting reaction conditions like mole ratio of p-cresol to formaldehyde, reaction temperature, catalyst concentration, solvent and reaction time.

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Title:

Montmorillonite for selective hydroxyalkylation of p-cresol

Contributors:

Garade, A.C. (author) / Mate, V.R. (author) / Rode, C.V. (author)

Published in:

Applied Clay Science ; 43 ; 113-117

Publication date:

2008-07-22

Size:

5 pages

ISSN:

DOI:

https://doi.org/10.1016/j.clay.2008.07.015

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Hydroxyalkylation , Solid acids , Ammonia TPD , Montmorillonite , Dihydroxydiarylmethane

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