Tag Archives: GC

有机化学教学有怎样的变化?

传统的教学方式指导有机化学的学生们使用标准的离线分析方法来分析化学反应,使用像高效液相色谱(HPLC)、核磁共振(NMR)、和气相色谱(GC)分析手段。

尽管这些分析手段提供最终产品的特性,它们不提供关于反应机理、中间产物或副产物的关键反应信息。通过ReactIR进行原位FTIR分析可在反应进行的同时实时分析和显现不同关键反应成分浓度的变化。这种信息使有机化学学生们得知并理解整个反应的动态过程,乃至反应途径和机理,从而大大增强教学效果。

http://cn.mt.com/cn/zh/home/events/webinar/live/chemistry5.html?=US_AC_eAdv_zhBlog

“梅特勒-托利多的ReactIR改变了我教有机化学的方法。它的实时分析能力使我可以设计出更有激励性的教学实验,把学生们的注意力放在一个有机反应过程中在发生什么。就像观看一个化学反应的电影,当他们眼睁睁地看着反应物在消失同时产物在生成学生们感到惊奇。”
John Sowa
有机和金属有机化学教授
Seton Hall大学

在十一月十七日的“将原位FTIR分析用于有机化学的新进展” 网络研讨会中,Paul Scholl将谈论在教学研究上通过ReactIR进行原位FTIR分析是怎样得到利用的。

How Has Organic Chemistry Changed in Academia?

Traditionally, organic chemistry students have been instructed to analyze reactions using standard offline analytical methods, such as High-Performance Liquid Chromatography (HPLC), Nuclear Magnetic Resonance (NMR) Spectroscopy, and Gas Chromatography (GC).

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How To Overcome Process Scale-Up Challenges Using Process Analytical Technology (PAT)

Process Analytical Technology for Scale-up

Process Analytical Technology

During Part I of his two part The Role of Process Analytical Technology (PAT) in Green Chemistry and Green Engineering online seminar series, Dominique Hebrault discussed scale-up challenges faced today by chemists and engineers.  Too often, offline sampling methods – mostly chromatographic methods such as High Performance Liquid Chromatography (HPLC) or Gas Chromatography (GC) – are used to monitor processes which fail to resolve common issues like reaction monitoring, poor mass balance, delayed initiation/reaction stalled, and loss of yield/by-products.  From a reaction engineering standpoint, obtaining heat mass balance information and preliminary kinetic data can be difficult using traditional offline methods during process scale-up.  Forming the final solid can be challenging using traditional offline methods, including filtration/drying a bottleneck, excessive washing, polymorph inconsistency, and batch to batch variability can be difficult.
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