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6篇 您的检索式:作者名="Istadi"
    题名 作者 年代 出处 被引量
1Screening of MgO- and CeO_2-Based Catalysts for Carbon Dioxide Oxidative Coupling of Methane to C_(2+) Hydrocarbons显示文摘The catalyst screening tests for carbon dioxide oxidative coupling of methane (CO2-OCM)have been investigated over ternary and binary metal oxide catalysts.The catalysts are prepared by doping MgO-and CeO2-based solids with oxides from alkali(Li2O),alkaline earth (CaO),and transition metal groups (WO3 or MnO).The presence of the peroxide (O2^2-)active sites on the Li2O2,revealed by Raman spectroscopy,may be the key factor in the enhanced performance of some of the Li2O/MgO catalysts.The high reducibility of the CeO2 catalyst,an important factor in the CO2-OCM catalyst activity,may be enhanced by the presence of manganese oxide species. The manganese oxide species increases oxygen mobitity and oxygen vacancies in the CeO2 catalyst.raman and Fourier Transform Infra Red (FT-IR)spectroscopies revealed the presence of lattice vibrations of metal-oxygen bondings and active sites in which the peaks carresponding to the buld crystalline structures of Li2O,CaO,WO2 and MnO are detected.The performance of 5%MnO/15%CaO/CeO2 catalyst is the most potential among the CeO2-based catalysts,although lower than the 2%Li2O/MgO catalyst.The 2%Li2O/MgO catalyst showed the most promising C2+hydrocarbons selectivity and yield at 98.0%and 5.7%,respectively.Istadi Nor Aishah Saidina Amin 2004Journal of Natural Gas Chemistry2004,13,1:5
2Optimization of methane conversion to liquid fuels over W-Cu/ZSM-5 catalysts by response surface methodology显示文摘到液体燃料的甲烷的变换仍然在发展过程。由与钨(W) 装载的修改 HZSM-5 提高了它的热抵抗性能,和高反应温度(800 ° C ) 没由升华导致 W 部件的损失。与钨和铜(Cu ) 装载 ZSM-5 在甲烷变换,公司 2, 和 C 5+ 选择导致了增长。高甲烷变换和 C 5+ 选择,和低 H 2 O 选择被使用 W/3.0Cu/ZSM-5 获得。在在用反应表面方法论(RSM ) 的不同温度和氧集中下面的 3.0 W/3.0Cu/ZSM-5 上的甲烷变换的优化被学习。当温度是 753 ° C 时,为甲烷变换的最佳点是 19% ,并且氧集中是 12% 。当温度是 751 ° C 时,最高的 C 5+ 选择是 27% ,并且氧集中是 11% 。Didi Dwi Anggoro Istadi 2008Journal of Natural Gas Chemistry2008,17,1:2
3Synergistic effect of catalyst basicity and reducibility on performance of ternary CeO2-based catalyst for CO2 OCM to C2 hydrocarbons显示文摘Istadi N A S Amin 2006J M Chem2006,259,:1
4Characterization of K,O/CaO-ZnO Catalyst for Transesterification of Soy?bean Oil to Biodiesel显示文摘Istadi 1 Prasetyo S A Nugroho T S 2015Procedia Environmental Sci?ences2015,23,:1
5Synergistic effect of catalyst basicity and reducibility on performance of ternary CeO2-based catalyst for CO20CM to C2 hydrocarbons显示文摘ISTADI AMIN N A S 2006J Mol Catal A: Chem2006,259,12:1
6Co-Generation of C_2 Hydrocarbons and Synthesis Gases from Methane and Carbon Dioxide: a Thermodynamic Analysis显示文摘This paper deals with thermodynamic chemical equilibrium analysis using the method of direct minimization of Gibbs free energy for all possible CH4 and CO2 reactions. The effects of CO2/CH4 feed ratio, reaction temperature, and system pressure on equilibrium composition, conversion, selectivity and yield were studied. In addition, carbon and no carbon formation regions were also considered at various reaction temperatures and CO2/CH4 feed ratios in the reaction system at equilibrium. It was found that the reaction temperature above 1100 K and CO2/CH4 ratio=l were favourable for synthesis gas production with H2/CO ratio unity, while carbon dioxide oxidative coupling of methane (CO2 OCM) reaction to produce ethane and ethylene is less favourable thermodynamically. Numerical results indicated that the no carbon formation region was at temperatures above 1000 K and CO2/CH4 ratio larger than 1.Istadi Nor Aishah Saidina Amin 2005Journal of Natural Gas Chemistry2005,14,3:0
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