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- W80781629 abstract "Selective gas chemisorption has been performed with hydrogen and carbon monoxide as adsorbates on several iron and ruthenium zeolite-supported catalysts by static volumetric measurement. Adsorption measurements were taken at ambient conditions with the resulting isotherms indicating the presence of two types of adsorption; reversible and irreversible. Three different evacuation times were employed where applicable in order to evaluate the effect of this variable on the fraction of reversible adsorption. Several variables have been studied for three ZSM-5 supported and six H-Mordenite supported iron catalysts. Of the three ZSM-5 supported samples, two were prepared by a newly developed extraction technique with cyclohexane as the solvent whereas the other was prepared by incipient wetness. Both techniques appear capable of preparing catalysts of comparable average particle sizes although pretreatment such as calcination before reduction may be an important factor. The H-Mordenite supported samples were prepared by the extraction technique with either cyclohexane or tetrahydrofuran (THF) as the solvent. The samples prepared with cyclohexane consistently yielded catalysts with smaller average particle sizes than those prepared with THF. Three ZSM-5 supported ruthenium samples were also prepared by the extraction technique with cyclohexane. Average particle sizes were found to be slightly affected by the metal loadingmore » as they ranged from 2.5 to 5.0 nm for metal loadings increasing from 1% to 8% ruthenium. X-ray diffraction line broadening, scanning electron microscopy (SEM), and transmission electron microscopy were also employed in order to complement the chemisorption results as well as evaluate the assumptions associated with selective gas chemisorption.« less" @default.
- W80781629 created "2016-06-24" @default.
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- W80781629 date "1982-11-20" @default.
- W80781629 modified "2023-09-27" @default.
- W80781629 title "H/sub 2/ and CO chemisorption on metal-carbonyl-extracted coal-liquefaction catalysts. Final report" @default.
- W80781629 hasPublicationYear "1982" @default.
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