【摘 要】
：
A series of tungsten promoted alumina supported nickel catalysts has been prepared for the carbon dioxide reforming of methane to synthesis gas. The catalysts h
【机 构】
：
Wolfson Catalysis Centre
论文部分内容阅读
A series of tungsten promoted alumina supported nickel catalysts has been prepared for the carbon dioxide reforming of methane to synthesis gas. The catalysts have been characterized by means of XRD, TEM,and Laser Raman spectroscopy. It is shown that the addition of tungsten to the nickel catalyst can stabilize the catalyst and increase the resistance to carbon deposition. Adding a suitable amount of tungsten can also increase the catalyst activity to be close to that of supported noble metal catalysts. The carburisation of the tungsten modified nickel catalyst decreases the catalyst activity at lower reaction temperatures(＜1123K),but has no effect on the catalyst performance at higher reaction temperatures. The alumina supported nickel catalyst modified by 0. 67 % (mass fraction)WOs has the equivalent equilibrium constant of the dry reforming reaction to that of alumina supported 5% (mass fraction) Ru at 873 K, and also has a lower activation energy for dry reforming than the latter.
其他文献
According to the assumption of slightly compressible fluid, the quadratic gradient term in the nonlinear partial differential equations for the traditional well
Polyaniline(PANI) film was electrosynthesized on 304 stainless steel by cyclic voltammetry using aqueous oxalic acid as supporting electrolyte. The potential sw
The method of preparing D-phenylalanine by asymmetric transformation is reported.D-phenylalanine was prepared from DL-phenylalanine by two-step reaction.D-pheny
Consider a system of nonlinear wave equations (e)2t-c2i△xui=Fi(u,(e)u,(e)x(e)u) in (0,∞)×(R)3 for i=1,┈,m,where Fi(i=1,┈,m) are smooth functions of degree
Crosslinked macroporous polyacrylamide(PAM)was prepared with inverse phase suspension polymerization technique.After treatment with hydrazine,the polymer was fu
Poly(methyltetraphenylphenylsilylene-co-bis(methylphenylsilyl)acetylene) (PSA) was synthesized by the cocondensation reaction of methyltetraphenylphenyldichloro
The paper deals with the degradation of the organic compounds in the coke plant wastewater by the combined process of ultrasonic irradiation and activated sludg
A series of idealized model simulations are analyzed to determine the sensitivity of model results to different configurations of the lateral boundary condition
作为95后的高中生,他们思维敏捷,爱好广泛,音乐已成为他们生活中一部分。笔者在进行了近十年的音乐教学中发现,大部分高中生喜欢音乐只是被音乐表面的旋律、节奏所吸引,部分
任务型语言教学是一种基于任务或以任务为基础的语言教学途径。主要表现在通过任务来学习语言,学习活动以表达意义为主。雅思写作考试强调学生的英语应用能力的考察,主要目的