当前位置：
X-MOL 学术
›
React. Chem. Eng.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Oxygen sensors for flow reactors – measuring dissolved oxygen in organic solvents
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2019-08-30 , DOI: 10.1039/c9re00253g Philipp Sulzer 1, 2, 3, 4, 5 , René Lebl 3, 4, 5, 6, 7 , C. Oliver Kappe 3, 4, 5, 6, 7 , Torsten Mayr 1, 2, 3, 4, 5
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2019-08-30 , DOI: 10.1039/c9re00253g Philipp Sulzer 1, 2, 3, 4, 5 , René Lebl 3, 4, 5, 6, 7 , C. Oliver Kappe 3, 4, 5, 6, 7 , Torsten Mayr 1, 2, 3, 4, 5
Affiliation
|
In an effort to push the boundaries of optical oxygen sensors, this contribution shows the development of a measurement system for high O2 content in organic solvents specifically designed for flow reactors. Presented sensors were prepared by directly melting an oxygen indicator dye into a highly resistant polymer matrix, leading to the ability to measure oxygen contents up to 59 mmol L−1 in tetrahydrofuran, toluene, acetone, dimethylformamide, cyclohexane and methyl tert-butyl ether. Long-term effects to the solvent were investigated by exposing the sensors for 22 hours to the respective solvent at 25 °C. Linearity according to Stern–Volmer was obtained for every single sensor in order to provide a system that can be easily initialized by two-point calibration into continuous flow reactors. To demonstrate the applicability of the sensor under reaction conditions, an oxidation of a Grignard reagent with molecular oxygen was performed in a flow reactor. The sensors were able to show the oxygen decrease during reaction and allowed online reactant quantification.
中文翻译：
流量反应器的氧气传感器–测量有机溶剂中的溶解氧
为了推动光学氧气传感器的发展，这一贡献表明了针对流动反应器的有机溶剂中高O 2含量测量系统的发展。提出的传感器是通过将一种氧指示剂染料直接熔化成高抗性的聚合物基体而制备的，从而能够测量四氢呋喃，甲苯，丙酮，二甲基甲酰胺，环己烷和甲基叔丁基醚中的氧含量，最高可达59 mmol L -1。丁基醚。通过将传感器在25°C下暴露于相应的溶剂22小时来研究对溶剂的长期影响。对于每个传感器，都根据Stern–Volmer获得了线性度，以提供一个可以通过两点校准轻松地将其初始化为连续流反应器的系统。为了证明传感器在反应条件下的适用性，在流动反应器中用分子氧对格氏试剂进行了氧化。传感器能够显示反应过程中的氧气减少，并可以在线定量反应物。
更新日期：2019-08-30
中文翻译：
流量反应器的氧气传感器–测量有机溶剂中的溶解氧
为了推动光学氧气传感器的发展，这一贡献表明了针对流动反应器的有机溶剂中高O 2含量测量系统的发展。提出的传感器是通过将一种氧指示剂染料直接熔化成高抗性的聚合物基体而制备的，从而能够测量四氢呋喃，甲苯，丙酮，二甲基甲酰胺，环己烷和甲基叔丁基醚中的氧含量，最高可达59 mmol L -1。丁基醚。通过将传感器在25°C下暴露于相应的溶剂22小时来研究对溶剂的长期影响。对于每个传感器，都根据Stern–Volmer获得了线性度，以提供一个可以通过两点校准轻松地将其初始化为连续流反应器的系统。为了证明传感器在反应条件下的适用性，在流动反应器中用分子氧对格氏试剂进行了氧化。传感器能够显示反应过程中的氧气减少，并可以在线定量反应物。
京公网安备 11010802027423号