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<正>2011年,在复杂多变的全球经济大环境下,中国经济经受了极大的考验,持续朝着宏观调控的预期方向发展。面对复杂多变的国际形势和国内经济运行不断出现的新情况新问题,中国经济政策走向及中国资本市场将备受关注。同样,在中国经济崛起的同时,中国涂料行业也面临着重大的转折。为了洞悉全球及中国经济的走向,使中国涂料企业拓展全球视野、树 相似文献
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In analyzing data from heterogeneous reactions, it is often necessary to quantitatively compare the relative ability of two rival models to fit the data. For Hougen-Watson models, techniques exist for comparing this degree of fit for low conversion data; a method is suggested here for making quantitative comparisons using high as well as the low conversion data. Once estimates of the parameters in the two models are obtained, the method may be applied by a one-variable regression analysis. An example is presented illustrating the advantages of using all the conversion data in discriminating between two rival models. 相似文献
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An on-line, computer controlled, automatic experimental setup for the determination of reaction kinetics in gas phase heterogeneous catalytic reactions is presented and demonstrated through the sample study of a simple reaction. The system is automatic to the extent of being capable to carry out, with little or no human intervention, an optimal sequence of experimental runs and single out from a set of plausible rate equations the one that fits best the experimental results.Application of the system to the study of Pt-catalyzed ethylene oxidation around 350°K and atmospheric pressure, showed the classic Langmuir-Hinshelw 相似文献
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对悬浮法和本体法PVC树脂生产方法进行了分析比较,并对2种方法制得的PVC树脂质量作了剖析,指出了本体法PVC树脂的优点和用途,以及对今后国内市场的作用。 相似文献
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纳米材料由于其独特的表面效应,全积效应以及量子尺寸效应,使得材料的电学,力学,磁学,光学等性能产生了惊人的变化,纳米技术在精细陶瓷,化工,微电子学,生物工程,医学等领域的成功应用及其广阔的应用前景,使得纳米材料及其技术成为目前科学研究的热点之一,被认为是21世纪的又一次产业革命。 相似文献