The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies

The kinetics of the reaction of crotonic anhydride with Scots pine (Pinus sylvestris) and Corsican pine (Pinus nigra) using pyridine as catalyst/solvent was investigated and activation energies for the initial reaction determined. Activation energies were calculated from the Arrhenius equation using rate data obtained from time-course experiments repeated at several temperatures. In one method, reaction constants (k) were determined experimentally, while in the other method initial rates were extrapolated at time zero. With the rate constant method, activation energy values for Scots and Corsican pine were calculated as 39.0 (±5.8) and 30.3 (±6.8) kJ mol-1, respectively. The method of initial rate was also used to determine activation energy. Activation energies of 41.3 (±7.0) and 26.9 (±4.0) kJ mol-1 were obtained for Scots and Corsican pine, respectively. There was no significant difference between the activation energies determined by the two methods. The initial reaction was observed to follow pseudo first-order-kinetics. A difference of ca. 10 kJ mol-1 between the activation energies was found between the two wood species. The reason for this difference is not known. This information is of fundamental importance when considering such issues as mechanisms of reaction, or designing efficient large scale processes.

The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies

The kinetics of the reaction of crotonic anhydride with Scots pine (Pinus sylvestris) and Corsican pine (Pinus nigra) using pyridine as catalyst/solvent was investigated and activation energies for the initial reaction determined. Activation energies were calculated from the Arrhenius equation using rate data obtained from time-course experiments repeated at several temperatures. In one method, reaction constants (k) were determined experimentally, while in the other method initial rates were extrapolated at time zero. With the rate constant method, activation energy values for Scots and Corsican pine were calculated as 39.0 (±5.8) and 30.3 (±6.8) kJ mol-1, respectively. The method of initial rate was also used to determine activation energy. Activation energies of 41.3 (±7.0) and 26.9 (±4.0) kJ mol-1 were obtained for Scots and Corsican pine, respectively. There was no significant difference between the activation energies determined by the two methods. The initial reaction was observed to follow pseudo first-order-kinetics. A difference of ca. 10 kJ mol-1 between the activation energies was found between the two wood species. The reason for this difference is not known. This information is of fundamental importance when considering such issues as mechanisms of reaction, or designing efficient large scale processes.

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Bibtex @ { tbtkagriculture138627, journal = {Turkish Journal of Agriculture and Forestry}, issn = {1300-011X}, eissn = {1303-6173}, address = {}, publisher = {TÜBİTAK}, year = {2003}, volume = {27}, pages = {7 - 13}, doi = {}, title = {The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies}, key = {cite}, author = {Özmen, Nilgül and Çetin, Nihat Sami} }
APA Özmen, N , Çetin, N . (2003). The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies . Turkish Journal of Agriculture and Forestry , 27 (1) , 7-13 .
MLA Özmen, N , Çetin, N . "The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies" . Turkish Journal of Agriculture and Forestry 27 (2003 ): 7-13 <
Chicago Özmen, N , Çetin, N . "The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies". Turkish Journal of Agriculture and Forestry 27 (2003 ): 7-13
RIS TY - JOUR T1 - The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies AU - Nilgül Özmen , Nihat Sami Çetin Y1 - 2003 PY - 2003 N1 - DO - T2 - Turkish Journal of Agriculture and Forestry JF - Journal JO - JOR SP - 7 EP - 13 VL - 27 IS - 1 SN - 1300-011X-1303-6173 M3 - UR - Y2 - 2021 ER -
EndNote %0 Turkish Journal of Agriculture and Forestry The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies %A Nilgül Özmen , Nihat Sami Çetin %T The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies %D 2003 %J Turkish Journal of Agriculture and Forestry %P 1300-011X-1303-6173 %V 27 %N 1 %R %U
ISNAD Özmen, Nilgül , Çetin, Nihat Sami . "The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies". Turkish Journal of Agriculture and Forestry 27 / 1 (Ocak 2003): 7-13 .
AMA Özmen N , Çetin N . The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies. Turkish Journal of Agriculture and Forestry. 2003; 27(1): 7-13.
Vancouver Özmen N , Çetin N . The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies. Turkish Journal of Agriculture and Forestry. 2003; 27(1): 7-13.
IEEE N. Özmen ve N. Çetin , "The Reaction of Crotonic Anhydride with Scots and Corsican Pine: Investigation of Kinetic Profiles and Determination of Activation Energies", Turkish Journal of Agriculture and Forestry, c. 27, sayı. 1, ss. 7-13, Oca. 2003