【摘 要】
：
The kinetics of the Fischer-Tropsch reaction over a Co/Nb2O5 catalyst in a fixed bed reactor was investigated experimentally. Experiments were carried out under
【机 构】
：
Federal University of Rio de Janeiro Programa de Engenharia Química
论文部分内容阅读
The kinetics of the Fischer-Tropsch reaction over a Co/Nb2O5 catalyst in a fixed bed reactor was investigated experimentally. Experiments were carried out under isothermal and isobaric conditions (T=543 K, P=2.1 MPa) and under different conditions of several H2/CO feed molar ratio (0.49-4.79), space velocities (0.2-3.8 h-1), mass of catalyst (0.3-1.5 g), and CO conversion (10%-29%).Synthesis gas conversion was measured and data were reduced to estimate the kinetic parameters for different Langmuir-Hinshelwood rate expressions. Differential and integral reactor models were used for the nonlinear regression of kinetics parameters. One of the rate equations could well explain the data. The hydrocarbon product distributions that were experimentally determined exhibited an unusual behavior,and a possible explanation was discussed.
其他文献
Supersaturated design is essentially a fractional factorial design in which the number of potential effects is greater than the number of runs. In this article,
The effect of the waving bed on the surface wave was investigated. The wave equation was reduced from the potential flow theory with the perturbation technique,
Thin film morphology of a symmetric semicrystalline oxyethylene/oxybutylene diblock copolymer (E76B38) on silicon was investigated by tapping mode atomic force
Surface modification by physical adsorption of a series of non-ionic surfactants including Tween 20, Tween 40,Tween 60, Tween 80 and Tween 85, was accomplished
The nonlinear hydrodynamic interaction between a floating elliptic cylinder and a vibrating circular cylinder immersed in an infinite fluid was investigated. By
在以生物质气体为燃料的固体氧化物燃料电池体系中,通过热力学平衡分析编程计算出700～1200 K时气体中各物种例如H2、CO、CO2和CH4的平衡组成,从而得到以氧化钇稳定氧化锆(YSZ)
A neutral dinuclear compound Cu2[(O=PPh2)2N]2(μ-O2PPh2)2 has been unexpec- tedly prepared from the reaction of [Cu2(dppa)2(MeCN)4](ClO4)2 (dppa = bis(diphenylp
Ultrafast cyclic voltammetry was used to study the redox behavior of a gold electrode in acetonitrile. The direct electrochemical evidence of the dissociation a
The reaction mechanism of SiCl4 with H2 has been studied theoretically using Gaussian 98 program at B3LYP/6-311G* level. Three different reaction paths (a, b, c
古典方程一非，用 SaintVenant-Kirchhoff 材料做的线性地有弹性的飞机膜被福克斯， Raoult 和 Simo 和 Pantz (2000 )(1993 ) 认为正当。在压缩下面，联系最小化问题承认的 Weshow