Determination of total oxygenates in organic materials for levels down to 5 ppm. by gas chromatography

Meade, C. F.; Keyworth, D.A.; Brand, Vincent T.; Deering, James

doi:10.1021/ac60248a038

Cited by 14 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both visual observations and carbon analysis indicated the presence of deposits on the wire. Samples of such deposits from different runs were analyzed for oxygen content using the method developed by Meade, et al (1967). In addition, nitrogen analysis was determined by the method of Nightingale and 1.000/-K Figure 7.…”

Section: Resultsmentioning

confidence: 99%

Deposit Formation from Deoxygenated Hydrocarbons. I. General Features

Taylor¹

1974

Product R&D

View full text Add to dashboard Cite

The study of the variables which control the rate of deposit formation from hydrocarbon jet fuels exposed to high-temperature stress is extended to the effect of the removal of dissolved molecular oxygen. Deposit formation rate measurements have been extended to higher temperatures (150-649°C) and pressures (18-69 atm) than previously employed In fuel stability studies. With most fuels, removal of molecular oxygen markedly lowered the rate of deposit formation. However, the poorest quality fuel tested did not exhibit lower deposit formation rates with deoxygenation. With the majority of fuels the greatest reduction in deposit formation rate with deoxygenation occured in the liquid phase. Pressure exerted a complex effect on deposit formation.

show abstract

Section: Resultsmentioning

confidence: 99%

Deposit Formation from Deoxygenated Hydrocarbons. I. General Features

Taylor¹

1974

Product R&D

View full text Add to dashboard Cite

show abstract

“…Since 1940, many methods based on pyrolysis of oxygenated compounds to carbon oxides have been developed using different detection modes (i.e., thermal conductivity, coulometry, infrared spectrometry, etc. ). − Neutron activation analysis is another technique that enables oxygen content determination based on the irradiation of a sample with neutrons having sufficient energy to initiate the 13 O (n,p) 16 N reaction and measurement of 7.4 s 16 N activity. This technique has been largely applied in the literature for coal analysis but rarely for liquid matrices, even if it is possible. , However, this approach suffers from several drawbacks (i.e., possible interferences, poor measurement reproducibility, and complex apparatus) that limit its attractiveness for a routine analysis method.…”

Section: Introductionmentioning

confidence: 99%

Progress in Oxygen Trace Analyses in Biomass Organic Liquids Using a High-Temperature Pyrolysis Reactor and Non-dispersive Infrared Detector

et al. 2015

View full text Add to dashboard Cite

International audienceThe development of a method for the determination of the oxygen amount in organic liquids is described using a new device made by a vertical pyrolysis unit linked to a non-dispersive CO infrared detector. The outcome signal is amplified using an additional electronic conversion card monitored by homemade software. This system allows for the quantification of oxygen in a range from 0.5 wt % oxygen to a limit of 001 wt % oxygen when applied to standard solutions (model oxygenate containing compounds in toluene). Linearity tests Were carried out on different oxygen model solutions containing molecules representative of biomass-derived matrices. The method provides relative good results when applied to a biomass product, such as a partially dehydroxygenated biomass fast pyrolysis oil. The most relevant aspects of the study are reported

show abstract

“…Analysis of low concentrations of oxygenates in process streams containing high levels of hydrocarbons is often a challenge. This is due to a variety of factors, of which the hydrocarbon matrix interference is usually the most severe . Many analytical methods have been developed to address this problem and most necessitated the adoption of elegant solutions to determine the exact quantities of oxygenates in the various samples.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive two-dimensional GC for the analysis of low-molecular-weight oxygenates in three different matrices from a petrochemical pilot plant using a single calibration

et al. 2014

View full text Add to dashboard Cite

A method using comprehensive (2) DGC with flame ionisation detection was developed to quantify 17 low-molecular-weight oxygenates in three different matrices, namely water, oil and gas, using a single calibration. The method was required for the pilot-plant experiments of a chemical process unit. From an analytical perspective, the first task was to find a suitable analytical method with sufficient selectivity and sensitivity to analyse the selected oxygenates at low levels in the presence of high levels of hydrocarbons. The second was the accurate quantitation of oxygenates in the water, oil and gas fractions, using the same instrument and calibration. Both these requirements were met by using comprehensive (2) DGC in the inverse configuration and calibrating the detector with the number of moles injected versus response. The method was successfully applied for the characterisation of the reactor product stream of the chemical process unit and made it possible to determine the fate of the selected oxygenates after passing through the reactor. The development of the method and some of the results are described in this paper.

show abstract

Determination of total oxygenates in organic materials for levels down to 5 ppm. by gas chromatography

Cited by 14 publications

References 5 publications

Deposit Formation from Deoxygenated Hydrocarbons. I. General Features

Deposit Formation from Deoxygenated Hydrocarbons. I. General Features

Progress in Oxygen Trace Analyses in Biomass Organic Liquids Using a High-Temperature Pyrolysis Reactor and Non-dispersive Infrared Detector

Comprehensive two-dimensional GC for the analysis of low-molecular-weight oxygenates in three different matrices from a petrochemical pilot plant using a single calibration

Contact Info

Product

Resources

About