稀土钙钛矿型复合氧化物催化剂研究现状(Ⅰ)

综述了近年来国内外稀土钙钛矿型复合氧化物的研究进展，阐述了由于ABO3稀土钙钛矿型催化剂A、B位的取代，出现了许多钙钛矿型及类似钙钛矿型晶体结构，增加了氧格空位，提高了钙钛矿型催化剂的催化活性。并且详细介绍了催化剂及其载体的制备方法及工艺。     

稀土钙钛矿型催化剂的研究进展

本文概述了稀土钙钛矿型复合氧化物的结构物征,分析了各种制备方法的优点及存在的问题,阐述了纳米钙钛矿型催化剂在各领域的应用发展前景.     

钙钛矿型复合氧化物的制备及应用

综述了近年来国内外钙钛矿型复合氧化物的制备方法;分析了钙钛矿型复合氧化物的应用前景.     

钙钛矿型稀土复合氧化物催化活性研究进展

概述了近年来对钙钛矿型稀土复合氧化物催化活性研究的进展。研究发现,与其他催化剂相比,钙钛矿型稀土复合氧化物作为燃烧催化剂时,特别是对大气污染物降解具有较好的催化活性,而钙钛矿型稀土复合氧化物作为光催化剂时,对水体污染物降解方面具有很好的光催化作用,具有很大的应用价值。     

稀土钙钛矿型复合氧化物催化剂研究现状(Ⅱ)

综述了近年来国内外稀土钙钛矿型复合氧化物的研究进展，研究了ABO，稀土钙钛矿型催化剂对各种气体的催化效果及反应机理，并讨论了催化剂的S与P的中毒机理。对稀土钙钛矿型催化剂的优缺点以及当前需要解决的问题进行了分析。     

A2BO4类钙钛矿型复合氧化物在催化领域的应用研究进展

概述了A₂BO₄类钙钛矿型复合氧化物的结构和性能，与ABO₃钙钛矿型氧化物进行了比较，简述了类钙钛矿型复合氧化物的制备方法和对复合氧化物的结构以及性能的影响，重点介绍了Ni系、Cu系和Co系等A₂BO₄型复合氧化物在尾气净化、NOx消除、氧化反应和甲烷氧化偶联等催化领域中的应用。     

钙钛矿型复合氧化物的制备方法研究进展

钙钛矿复合氧化物是一类重要的功能材料,在电、磁、光、催化等领域具有重要的应用前景。文章首先简要的介绍了钙钛矿复合氧化物的结构特征,同时总结了各种钙钛矿型复合氧化的三种制备方法:液相法、气相法、固相法。     

钙钛矿型中温固体氧化物燃料电池阴极材料

中温固体氧化物燃料电池(ITSOFC)的研制是固体氧化物燃料电池(SOFC)商业化的必然趋势，影响其发展的关键问题是阳极材料、阴极材料和电解质材料的研制。钙钛矿结构稀土复合氧化物材料是最有希望的中低温固体氧化物燃料电池阴极材料，本文对钙钛矿结构的稀土复合氧化物阴极材料的导电机理、合成方法以及近年来国内外研究较多的ABO、型阴极材料的相关研究作了较为详细的叙述，并提出了其发展方向。     

La1-xSrxMnO3钙钛矿复合氧化物研究进展

综述了钙钛矿型复合氧化物La1-xSrxMnO3的制备方法，分析各种制备方法与传统材料制备方法的差别；根据其结构和性能特点介绍了其主要应用方向。     

La1-xSrxMnO3钙钛矿复合氧化物研究进展

综述了钙钛矿型复合氧化物La1-xSrxMnO3的制备方法，分析各种制备方法与传统材料制备方法的差别；根据其结构和性能特点介绍了其主要应用方向。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.     

塔设备改造选型的分析

就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后，着重介绍一种新型塔板（导向梯形浮阀塔板）和一种新型填料（波环填料——乾隆帕克）。     

Effect of degree of deacetylation of chitin on the properties of chitin crystallites

In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss of the partially saponified and neutralized samples after HCl hydrolysis increased linearly with the degree of deacetylation. The crystallinity of the samples was found to increase after acid hydrolysis. According to conductimetric titration, the surface charge density of the crystallites, after acid hydrolysis, was found to increase with base treatment time. The effect of surface charge on the formation of a chiral nematic phase, due to the rodlike nature of the crystallites, was explored. These results show that because the contribution of charged particles to the ionic strength was significant the double layer compression was affected, especially since the surface charge density was close to the Manning limit. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:373–380, 1997