High-Pressure Solubility of Hydrogen in Dimethyl Ether

Jonasson, Ari; Persson, Ole; Rasmussen, Peter

doi:10.1021/je00022a012

Cited by 15 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 High-pressure solubilities of carbon dioxide, carbon monoxide, and hydrogen in dimethyl ether have already been reported. 1,2 The present work is a continuation of the project and brings new information for the nitrogen solubility in dimethyl ether, and for the carbon dioxide and nitrogen solubility in dimethyl ether + methanol.…”

Section: Introductionmentioning

confidence: 90%

“…for this system. The second model is based on interactions between the nitrogen molecule (1) and the dimethyl ether molecule(2). The objective function minimized by means of Marquardt's algorithm with a maximum of 100 iterations was of bubble pressure type in the form where and the subscript c denotes calculated values, e denotes experimental values, and i is the number of the experimental points.…”

mentioning

confidence: 99%

See 1 more Smart Citation

High-Pressure Vapor−Liquid Equilibria in the Systems Nitrogen + Dimethyl Ether, Methanol + Dimethyl Ether, Carbon Dioxide + Dimethyl Ether + Methanol, and Nitrogen + Dimethyl Ether + Methanol

Teodorescu

Rasmussen

2001

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

Isothermal (P, T, x, y) data have been measured for the binary and ternary systems nitrogen + dimethyl ether at 15, 35, and 45 °C, dimethyl ether + methanol at 80 °C, carbon dioxide + dimethyl ether + methanol at 40 and 60 °C, and nitrogen + dimethyl ether + methanol at 40 and 15 °C. The pressure range under investigation was up to 9.5 MPa. The experimental data for the binary systems were correlated with the SRK equation of state using the MHV2 mixing rule combined with the UNIFAC or UNIQUAC model for the expression of the excess Gibbs energy. The experimental data for the ternary systems have been compared with those predicted by means of the same models, and the results are discussed by comparison. The binary system of nitrogen + dimethyl ether as well as the two ternary systems have not previously been studied.

show abstract

Section: Introductionmentioning

confidence: 90%

mentioning

confidence: 99%

High-Pressure Vapor−Liquid Equilibria in the Systems Nitrogen + Dimethyl Ether, Methanol + Dimethyl Ether, Carbon Dioxide + Dimethyl Ether + Methanol, and Nitrogen + Dimethyl Ether + Methanol

Teodorescu

Rasmussen

2001

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

show abstract

“…Note that authors use many different ways (type of data) to report the solubility information and also their experimental uncertainties. Values of experimental uncertainty are given based on the measurements of vapor–liquid equilibrium (VLE) − or solubility coefficients. , Regarding VLE data, the uncertainty on hydrogen mole fraction in the liquid phase varies depending on the investigated solvents. After analysis of these articles, we can estimate that the data uncertainty of Henry’s constant varies from 5 % to 10 %.…”

Section: Data Inventorymentioning

confidence: 99%

Hydrogen Solubility in Hydrocarbon and Oxygenated Organic Compounds

et al. 2015

View full text Add to dashboard Cite

The hydrogen solubility in 42 organic compounds including alcohols, aldehydes, carboxylic acid, esters and ethers, glycols, n-alkanes, and water is investigated. For this purpose, the Henry's constant is collected or computed from different sources. After removing incoherent data, two temperature correlations are proposed whenever possible. Their average deviation is consistent with experimental uncertainty between 5 % and 10 %. Further data reduction could then be performed by comparing the Henry's constant behavior among solvents. Monte Carlo molecular simulation is used to produce pseudoexperimental Henry's constant data at high temperature in 19 oxygen-bearing compounds such as alcohols, linear ketones, ethers, esters (573.15 K to 723.15 K) within average statistical uncertainties of 8 %. The molecular simulation results show the same trends as those of the experimental data. The database analysis shows that the hydrogen Henry's constants generally decrease with molecular weight and depend on chemical family in following way: H diols > H alcohols > H esters > H aldehydes > H ethers > H alkanes . It always decreases with temperature. The slope of ln H vs 1/T depends little on chemical family. At high temperature, a few experimental data confirm the observation of molecular simulation showing an increase of this slope.

show abstract

“…1 To produce DME on a large scale, a full knowledge of the many phase equilibria involved is required. Previously, a number of VLE data have been published, [2][3][4][5][6] but the only VLLE data found are for the system (CH 3 ) 2 O + H 2 O limited to 10 bar. 5 This work focuses on the phase behavior found in systems made by combinations of the five components N 2 , CO 2 , (CH 3 ) 2 O, H 2 O, and CH 3 OH, since all five components are involved when producing DME.…”

Section: Introductionmentioning

confidence: 99%

VLE and VLLE Measurements of Dimethyl Ether Containing Systems

2002

Self Cite

View full text Add to dashboard Cite

The present work describes a method that allows rapid measurement of both VLE and VLLE isotherms. Samples of the various phases are taken from a high-pressure autoclave equipped with windows using a movable needle. The samples are sent directly into a GC that is calibrated using pure compounds. The procedure allows for the measurement of a full isotherm with 5 to 10 data points for all phases during one working week. The method has been validated by measuring the systems CO 2 + CH 3 OH and CO 2 + (CH 3 ) 2 O and comparing with literature data. Thereafter, a range of systems composed of the five components N 2 , CO 2 , (CH 3 ) 2 O, H 2 O, and CH 3 OH has been measured. This work contains new experimental data for the systems CO 2OH, and N 2 + CO 2 + (CH 3 ) 2 O + H 2 O + CH 3 OH, in the temperature range 25 to 45 °C and the pressure range 3 to 105 bar.

show abstract

High-Pressure Solubility of Hydrogen in Dimethyl Ether

Cited by 15 publications

References 5 publications

High-Pressure Vapor−Liquid Equilibria in the Systems Nitrogen + Dimethyl Ether, Methanol + Dimethyl Ether, Carbon Dioxide + Dimethyl Ether + Methanol, and Nitrogen + Dimethyl Ether + Methanol

High-Pressure Vapor−Liquid Equilibria in the Systems Nitrogen + Dimethyl Ether, Methanol + Dimethyl Ether, Carbon Dioxide + Dimethyl Ether + Methanol, and Nitrogen + Dimethyl Ether + Methanol

Hydrogen Solubility in Hydrocarbon and Oxygenated Organic Compounds

VLE and VLLE Measurements of Dimethyl Ether Containing Systems

Contact Info

Product

Resources

About