Thermodynamics of the transformations of oxygen- and sulphur-containing functional groups during coal liquefaction in hydrogen and hydrogen donor

Messenger, Lance; Attar, Amir

doi:10.1016/0016-2361(79)90219-9

Cited by 12 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Results and Discussionmentioning

confidence: 99%

“…The reaction process of hydrodeoxygenation of phenolics is generally considered to have two different reaction paths, that is, the direct deoxygenation reaction and the indirect deoxygenation reaction. 32 However, if the reaction mechanism of the deoxidation reaction is further considered, there are also two reaction forms, such as catalyst hydrodeoxygenation and hydrogen-donor deoxidation. 29 When these differences are comprehensively considering, the reaction network of alkylphenol will be the same as in Figure 5 With the reaction network of alkylphenols shown on Figure 5, the network is broadly classified into four types, including direct hydrodeoxygenation affected by a catalyst and hydrogen, indirect hydrodeoxygenation affected by a catalyst and hydrogen, direct hydrodeoxygenation affected by a hydrogen donor, and indirect hydrodeoxygenation affected by a hydrogen donor, among which indirect hydrodeoxygenation will first generate the hydrogenation saturation of the benzene ring and then finally cause the elimination of the phenolic hydroxyl group.…”

Section: Energy and Fuelsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Dephenolization on Low-Temperature Coal Tar Hydrogenation To Produce Fuel Oil

et al. 2016

View full text Add to dashboard Cite

The experiment of fuel oil production through hydrogenation has been conducted on a hydrorefining− hydrocracking two-stage serial fixed-bed reactor with coal tar distillate [CTD; initial boiling point (IBP)−360 °C] and phenol extraction coal tar distillate (PE-CTD) as the feedstocks. By comparison of the changes in chemical composition and carbon number distribution as well as product distribution and properties before and after hydrogenation in the two feedstocks, the influences of phenol extraction treatment on fuel oil production with coal tar hydrogenation were studied. The experimental conditions of this study include the reaction pressure of 13 MPa, liquid hourly space velocity of 0.5 h −1 , hydrorefining reaction temperature at 360 °C, hydrocracking reaction temperature at 380 °C, and filling proportion of hydrorefining catalyst/ hydrocracking catalyst of 1:1. The experimental result shows that phenol extraction reduces the naphtha yield by 8.69 wt % but produces 13.58% of mixed phenols. Furthermore, the phenol extraction treatment is favorable for converting a heavy distillate of coal tar to a light fraction.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Section: Energy and Fuelsmentioning

confidence: 99%

Effect of Dephenolization on Low-Temperature Coal Tar Hydrogenation To Produce Fuel Oil

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The thermokinetic method for the analysis of the distribution of sulfur functional groups in coal have been described by Attar andDupuis (1978a, 1979a) and by Attar (1981). Therefore, only a brief account of the principles of the method will be given.…”

Section: Thermokinetic Analysis Of the Distribution Of Sulfur Functiomentioning

confidence: 99%

The Desulfurization of Organic Sulfur and the Transformations of Organic Sulfur Functional Groups in Coal Pyrolysis

Attar

Messenger

1983

Chemical Engineering Communications

Self Cite

View full text Add to dashboard Cite

Conversion of organic oxygen compounds and their mixtures on H‐ZSM‐5

Fuhse

Bandermann

1987

Chem Eng & Technol

View full text Add to dashboard Cite

The conversion of a number of alcohols, ethers, ketones, aldehydes, carboxylic acids, esters, and cyclic compounds and their mixtures on H‐ZSM‐5 at 673 K was investigated. These compounds can be easily converted to aromatic hydrocarbons if the C/H ratio of the molecule fragment, remaining after elimination of oxygen as water, is less than 0.62. At higher C/H ratios, coking of the catalyst increases, thus reducing its lifetime, a difficulty which can be overcome by hydrogenation of these compounds prior to their conversion over H‐ZSM‐5. A procedure is proposed for converting at least a part of organic waste chemicals to valuable products instead of burning them.

show abstract

Thermodynamics of the transformations of oxygen- and sulphur-containing functional groups during coal liquefaction in hydrogen and hydrogen donor

Cited by 12 publications

References 5 publications

Effect of Dephenolization on Low-Temperature Coal Tar Hydrogenation To Produce Fuel Oil

Effect of Dephenolization on Low-Temperature Coal Tar Hydrogenation To Produce Fuel Oil

The Desulfurization of Organic Sulfur and the Transformations of Organic Sulfur Functional Groups in Coal Pyrolysis

Conversion of organic oxygen compounds and their mixtures on H‐ZSM‐5

Contact Info

Product

Resources

About