Drying of acidic macroporous styrene-divinylbenzene resins with 12-20% cross-linking degree

被引：19

作者：

Iborra, M ^{[1
]}

Tejero, J ^{[1
]}

Cunill, F ^{[1
]}

Izquierdo, JF ^{[1
]}

Fité, C ^{[1
]}

机构：

[1] Univ Barcelona, Fac Chem, Dept Chem Engn, E-08028 Barcelona, Spain

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2000年 / 39卷 / 05期

关键词：

D O I：

10.1021/ie9904807

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The sulfonic macroporous styrene-divinylbenzene resins in acidic form Amberlyst 15, Bayer K-2631, and Lewatit SPC 112 were dried at 298-366 K in a cross-circulation air-dryer. Drying curves showed constant-rate, and falling-rate periods. Drying in the falling-rate period can be explained by a diffusion mechanism. The effective diffusivity of water correlated well with the inverse of absolute temperature in an Arrhenius plot, with an activation energy of 21 +/- 1 kK/mol. Finally, from the moisture content at equilibrium the adsorption enthalpy for water was estimated to be -37 kJ/mol, in good agreement with literature data within the limits of the experimental error.

引用

页码：1416 / 1422

页数：7

共 31 条

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[2]

BOHORQUEZ JA, 1982, B SOC CHIM FR, V5, P1

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