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Carbochemistry
About: Carbochemistry is a research topic. Over the lifetime, 1010 publications have been published within this topic receiving 16626 citations.
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20 citations
TL;DR: In this paper, a coal char gasification with carbon dioxide was performed in a fluidized bed and continuous pyrolysis of the char was carried out in the nitrogen stream to evaluate the amount of gas produced by thermal decomposition.
Abstract: Coal char gasification with carbon dioxide was performed in a fluidized bed. The continuous pyrolysis of the char was carried out in the nitrogen stream to evaluate the amount of gas produced by thermal decomposition. The gasification reaction was analyzed by assuming the reaction takes place independently after the pyrolysis is completed. The bubble size under the gasification condition was measured by use of the electroresistivity probe. The bubbling bed model and the thermogravimetrically obtained rate equation were used for the prediction of the conversions of both char and carbon dioxide, where the bubbling bed model was modified to give the stoichiometrically consistent material balance between the consumed char and carbon dioxide.
20 citations
Journal Article•
20 citations
TL;DR: Pulsed H2O gasification of Yallourn coal char (prepared at 1073 K for 30 min under argon) loaded with Na2CO3 or Fe(NO3)3 revealed that reaction of H 2O with metallic Na or Fe, formed during preheat treatment of the char at 1273 K under flowing helium, occurred at a temperature as low as 873 K to give H2 and metal oxides as mentioned in this paper.
20 citations
TL;DR: In this paper, an ion-exchanged process was used to obtain catalytic iron species for coal liquefaction in Hagel and Beulah lignites, which yielded a highly dispersed catalytic metal species.
Abstract: A significant enhancement of the liquefaction yields and desirable products from two lignites has been achieved by incorporating iron in the lignites by an ion-exchange process. The total conversion of iron ion-exchanged Hagel and Beulah lignites was found to increase by up to 25% and the oil yield by 10% relative to the untreated lignites. The ion-exchanged lignites were prepared by stirring a slurry mixture of the lignite and ferric acetate [Fe(OOCCH 3 ) 3 ] in a 10-L fermenter. The ion-exchange process, in which iron was exchanged primarily for calcium, yielded a highly dispersed catalytic iron species for coal liquefaction
20 citations