Kinetic and mechanistic aspects of the acetylation of wood with acetic anhydride

被引：87

作者：

Hill, CAS ^{[1
]}

Jones, D ^{[1
]}

Strickland, G ^{[1
]}

Cetin, NS ^{[1
]}

机构：

[1] Univ Wales, Sch Agr & Forest Sci, Bangor LL57 2UW, Gwynedd, Wales

来源：

HOLZFORSCHUNG | 1998年 / 52卷 / 06期

关键词：

chemical modification; acetic anhydride; acetylation of pine; kinetics of acetylation; activation energy; Corsican pine; Pinus nigra;

D O I：

10.1515/hfsg.1998.52.6.623

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

The kinetics of the reaction of acetic anhydride (AA) and acetic anhydride in pyridine with Corsican pine (Pinus nigra) sapwood have been investigated, and activation energies determined. For the pyridine catalysed system the chemical activation energy has been determined using the method of initial rates at 41.6 (+/- 8.0) kJ/mol, and for the non-catalysed reaction as 50.9 (+/- 3.0) kJ/mol. The reaction kinetics obey diffusion rate laws and the corresponding activation energies for diffusion have been evaluated as 20.5 (+/- 0.9) kJ/mol (pyridine catalysed) and 34.2 (+/- 1.0) kJ/mol for the non-catalysed system.

引用

页码：623 / 629

页数：7

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