Experimental and Computational Investigation of Knoevenagel Condensation in Planetary Ball Mills

被引：51

作者：

Burmeister, Christine F. ^{[1
]}

Stolle, Achim ^{[2
]}

Schmidt, Robert ^{[2
]}

Jacob, Katharina ^{[2
]}

Breitung-Faes, Sandra ^{[1
]}

Kwade, Arno ^{[1
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Particle Technol IPAT, D-38104 Braunschweig, Germany

[2] Univ Jena, Inst Tech Chem & Environm Chem ITUC, D-07743 Jena, Germany

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2014年 / 37卷 / 05期

关键词：

Ball milling; Discrete element method; Mechanochemistry; Planetary ball mill; MODEL;

D O I：

10.1002/ceat.201300738

中图分类号：

TQ [化学工业];

学科分类号：

081705 [工业催化];

摘要：

The influence of several process parameters like milling time, ball-to-beaker volume ratio, diameter of milling balls, and rotation frequency on the Knoevenagel condensation of vanillin and barbituric acid in planetary ball mills was investigated. These parameters determine the amount of energy provided for the reaction. Additionally, numerical simulations were carried out to describe the stress conditions in detail and to compute the drive power and energy transfer which cannot be measured directly. The mill and experimental parameters were modeled by the discrete element method with adequate coefficients of friction and restitution required to describe the powder behavior in the system. The coefficients were determined by correlation of experiments and simulations.

引用

页码：857 / 864

页数：8

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