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第六届国际稀土开发与应用研讨会

作者： Min YANG~* Haijun GUO Le ZHOU Qiong DANG Yansheng LI School of Environmental and chemical Engineering Dalian Jiaotong University Box 285 794 Huanghe Road Dalian china 116028

＜正＞Recently,the interest to reforming of ch4 with CO2（CRM） has rapidly increased due to the both commercial and environmental *** industrial point of view,the advantages of this reaction are:（i） using the most abundant and cheapest carbon-containing gases（ch4 and CO2）;（ii） producing low H2/CO ratio（compared to steam reforming）,which is suitable for depth transformation of Oxo and Fischer-Tropsch synthesis[1];（iii） application in the chemical energy transmission[2].Furthermore,the consumption of ch4 and CO2 greenhouse gases could lead to a decline in the rate of the global warming. The effect of rare-earth promoter CeO2 loading（1-6 wt.%） on the morphologies,properties and catalytic behaviors of nano Pt/MgO catalysts was *** support MgO was prepared by ion exchange resin method,the catalysts were prepared by co-impregnation method and characterized by SEM,TEM,X-ray diffraction（XRD）,and *** dispersion was estimated through cyclohexane dehydrogenation[3].The SEM measurements indicated that the morphologies and particle size of catalysts weren’t altered with the addition of *** showed the formation of nanocrystalhtes of Pt on the surface of MgO,but no Pt diffusion peaks appeared on the fresh catalysts with the addition of ceria due to the well dispersed Platinum particles, indicating that the CeO2 addition promoted the Pt dispersion. CO2-TPD analyses showed that the CeO2 promoter can enhance the metal-support interaction between platinum and magnesia,and thus lower the temperature of the reforming reaction of ch4 with CO2 and improve the resistance to carbon *** dispersion of Pt,measured by the rate of cyclohexane dehydrogenation,increases with increasing of the CeO2 loading,supported the above *** effect of CeO2 on the catalytic behavior of nano Pt/MgO catalysts in the reaction of CO2 reforming of ch4 was *** of CeO2 results in improvement of catalytic performance for the reforming of methane with CO2.

关键词： CeO2 promoter nano Pt/MgO catalysts ch4 reforming dispersion activity

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A Study of ch_4 Partial Oxidation reforming with Detailed Mechanisms

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Journal of Thermal Science 2000年第2期9卷 176-181页

作者： JianningZhu JohnBromly 等 SchoolofchemicalEngineeringCurtinUniversityofTechnologyGPOBoxU1987 PerthwesternAustralia6845Australia AlintaGasResearchLaboratory 5DeLaeterWayTechnologyParkBentleyWA6102Austral

A kinetic study of ch4 partial oxidation was performed using chemkin Ⅱ simulation package with the GRI, NIST, Alexander and Leeds ch4 oxidation mechanisms. Comparing kinetic simulation results with thermodynamic analysis indicates that GRIl .2-3.0, NIST and Alexander--0. l-0.3 mechanisms give a reasonable performance in describing ch4 partial oxidation while Alexander0.4 and the Leeds mechanisms fail to do so. Two distinct reaction zones are observed in the simulation results, which is different from the two-stage concept reported in the literature. Major global reactions within each reaction zone are identified.

关键词： ch4 reforming Partial Oxidation Kinetic Mechanisms.

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维普期刊数据库

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Kinetic Study on CO_2 reforming of Methane

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chinese Journal of chemical Engineering 2001年第2期9卷 190-195页

作者： C.E.Quincoces M.G.González Centro de Investigacion y Desarrollo en Procesos Cataliticos (CINDECA) 阿根廷

The kinetics of CO2 reforming of methane has been studied at 976－1033K on a commercial NiO/CaO/Al2O3 catalyst in a packed-bed continuous reactor. The reaction was carried out at atmospheric pressure and CO2/ch4 ratio ＞ 2. The Hougen-Watson rate models were fitted to experimental data assuming the disso ciative adsorption of methane as the rate-determining step. The reaction rate showed an effective reaction order of about unity for ch4. The apparent activity energy was found to be 104 kJ·mol-1. Therefore the kinetic reaction parameters were determined and a possible reaction mechanism was proposed.

关键词： ch4 reforming Ni catalysts syngas

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