Near-infrared spectroscopy as a rapid tool for water content analysis in the partial oxidation of ethanol

Abstract

The oxidation of ethanol to acetaldehyde was previously investigated in a continuous flow bench scale reactor using a zirconium-oxide-supported vanadium catalyst. Products were analyzed by near-infrared spectroscopy, a fast and accurate tool for the determination of water, ethanol, and acetaldehyde content. Water content was calibrated by Karl Fischer titration while gas chromatography was used to calibrate ethanol and acetaldehyde contents. Near-infrared spectroscopy is a fast, cost-effective method for the determination of water, ethanol, and acetaldehyde products from partial ethanol oxidation.

Keywords:

• acetaldehyde
• ethanol
• Near-infrared spectroscopy
• oxidation
• water

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This publication is the result of the Development of the UniCRE Center (LO1606) project, which is financially supported by the Ministry of Education, Youth, and Sports of the Czech Republic (MEYS) under the National Sustainability Program I. The result was achieved using the infrastructure of the project, Efficient Use of Energy Resources Using Catalytic Processes (LM2015039), which is financially supported by MEYS within the targeted support of large infrastructures. Ministry of Education, Youth and Sports of the Czech Republic.