Activation entropy and anomalous temperature dependence of viscosity in aqueous suspensions of Fe₂O₃

详细信息    查看全文

• 作者：H.D. Chandler ^{david.chandler@wits.ac.za}
• 关键词：Suspension viscosity ; Activation energy ; Activation entropy
• 刊名：Powder Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：305
• 期：Complete
• 页码：572-577
• 全文大小：737 K
• 卷排序：305

文摘

Viscosity of a Fe2O3 was shown to increase rather than decrease with increasing temperature. In terms of an Arrhenius equation, a negative Gibbs activation energy for flow is implied. Effect due to the partially colloidal nature of the suspension A description in terms of an activation entropy and activation enthalpy is suggested. The activation enthalpy is similar to that for water up to a solids concentration of about 10%.