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(現代)英語敎育叢書 . v.14 ^ 예스퍼슨英文法
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Solvent diffusion in polymer-embedded hollow nanoparticles studied by in situ small angle X-ray scattering
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New equipment using a static analytic method for the study of vapour-liquid equilibria at temperatures down to 77 K
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English Legal Terminology: Legal Concepts in Language^ 3^r^d ed
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한국 제조업의 에너지효율 향상평가
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Comparison of the effect of hand instruments^ an ultrasonic scaler^ and an erbium-doped yttrium aluminium garnet laser on root surface roughness of teeth with periodontitis: a profilometer study
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- 저자 : Nchare Mominou (검색결과 2 건)
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Transformations of phenol into fuel over TiO2–CeO2/ZSM-5 aided by ultrasound and ultraviolet
Lei Wang,Fang yuan,Luoxin Liu,Nchare Mominou,Shuzhen Li,Cheng Li,Wenjiu Wang 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
A novel technology, named transformations of phenol into fuel over TiO2–CeO2/ZSM-5 aided byultrasound and ultraviolet (TPFU), was developed. ZSM-5 zeolite was adjusted by TiO2 and CeO2 bymeans of impregnation. X-ray diffraction (XRD) and scanning electron microscope (SEM) analysisindicated the ZSM-5 remained intact after modification, and the titanium and cerium partly entered thecatalyst channel. The effect of temperature, pressure, space speed, and phenol to the catalyst ratio on theproduction yield was studied. The model compounds were transformed into fuel on the conditions oftemperature 300 8C; pressure 0.11 MPa, space velocity 1.0 h 1, and the ratio 1.5. Gasoline and diesel oilyield, and phenol compound conversion rate reached the maximum values of 50.1%, 44.1% and 98.5%,respectively. Meanwhile, biomass oil was transformed into fuel under the best conditions. The content ofaromatic compounds and alkane compounds in refined oil was higher than that in biomass crude oil, andphenol content has a significant decrease.
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Alarba Albertine Sam-Tunsa,Kassem Nourhan Nabil,Nana Achile,Taypondou Japhet Darman,Sakue Eric Ngankam,Moctar Iyamni Bintou,Nchare Mominou,Kumar Sanjay 한국자원공학회 2023 Geosystem engineering Vol.26 No.6
This paper examines the potential use of pegmatite and marble as additives in amalgamation with Meiganga kaolin to produce stoneware products capable to resist high temperatures as well as enhancement the mechanical characteristics. Two series of ceramic products were formulated by partly replacing kaolin with 0, 3, 5 and 7 wt% of both pegmatite and marble wastes. The specimens were sintered at 1000°C, 1050°C and 1100°C. Fired ceramic samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and the microstructure of the products was determined using an environmental scanning electron microscope and energy-dispersive X-ray spectroscopy. Also, the physico-mechanical properties were evaluated. Results divulged that, the addition of pegmatite or marble to kaolin enhances the strength of the ceramic body and act as a fluxing agent by promoting vitrification and glassy phase in clay after firing. The highest flexural strength results were observed with 7 wt% of pegmatite added at 1100 °C, with an increase ~ 35% compared to the control sample. High silica and alumina contents in pegmatite fill in voids, providing densification matrices. The incorporation of pegmatite allows to obtain a ceramic with better mechanical properties and energy saving as compared by the conventional ceramic.
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