旋转填充床的流体力学特性与传递过程的理论研究进展

旋转填充床(RPB)是一种高效的强化传递过程设备，亦是一种高效的混合与多相反应设备，在化工、材料、冶金、能源、环保等领域有着广泛的应用前景。本文概要地介绍了近年来对该类装置的流体力学特性和传递过程的理论研究进展。     

功能化程序对笼形聚偕氨肟树脂吸附和吸留性质的影响

聚丙烯颗粒在水溶液中与丙烯腈和二乙烯基苯反应,得接枝交联产物（Ⅰ）。Ⅰ被氨肟化再经成笼反应．得笼形聚偕氨肟树脂（Ⅱ）。笼内仅吸留易于除去的溶剂丙酮。若Ⅰ成笼后再氨肟化,所得吸收剂（Ⅲ）将吸留大量的羟胺,它缓慢地释放出来,干扰吸收剂对酸、碱离子或分子吸附容量的测定。Ⅱ对一些离子例如Hg2+和MnO4-的吸附能力与Ⅲ不同,被认为是两者的网络结构不同所致。     

垃圾在流化床中焚烧NO排放特性研究

在Ф150 mm流化床上，研究了六类典型组分垃圾NO转化率与床温和过量空气系数(excess air简称EA)的关系。研究发现，纸渣与木块NO转化率最高，橡胶与塑料最低;织物、纸张、厨余、木块、塑料NO均具有中温生成特性，一般在800 ℃～850 ℃时即接近最大值，之后温度升高对NO的生成影响不大;橡胶与无烟煤由于含N化合物结构稳定，其NO转化率随床温升高而增大;由于挥发分析出的相互影响，较低的火焰温度，混合垃圾NO转化率一般低于单组分垃圾的线性叠加;少量水分不会对垃圾NO转化率造成很大影响，相反还会促进NO的转化，但过量水分会抑制NO的生成。     

Effect of adsorption of vapours on the electrical conductivity of some polyene semiconductors: adsorption and desorption kinetics

The change in semiconductive properties of β-apo-8′-carotenal, astacene and methyl bixin on adsorption of various vapours on the crystallite surfaces has been studied at a constant sample temperature. The adsorption of vapours enhances the semiconductivity of the polyenes appreciably. This enhancement depends on the chemical nature and also on the pressure of the adsorbed vapour. The adsorption and desorption kinetics follow the modified Roginsky-Zeldovich relation. A two stage desorption process, the first stage of which gives a Lennard-Jones potential energy curve and is followed by a rate-determining transition over a potential energy barrier to the second stage of adsorption forming weakly bound complexes between the vapour molecules and the polyene crystallites, can explain satisfactorily the experimentally observed kinetic data.     

粉煤灰空心微珠沸石化制备复合空心球

采用晶种静电吸附-诱导转化技术，成功地将选自工业废弃物粉煤灰的空心微 球转化为具有沸石/莫来石双层复合球壳结构的空心球，用XRD和SEM等手段对产物 进行了表征，并对球壳的转化机理进行了讨论。     

Molecular orbital study for Na, Mg, and Al adsorption on the Si (111) surface

We investigated the interactions between the Si(111) surface and the Na, Mg, and Al atoms using cluster model calculations. Calculations were performed at levels of complete-active-space self-consistent-field (CASSCF) and multi-reference singly and doubly excited configuration interaction (MRSDCI) calculations using the model core potential method. Our calculations revealed that the most favorable sites of Na, Mg, and Al adsorption on Si(111) are on top (T₁), bridge (B₂), and 3-fold filled (T₄) sites, respectively. The nature of chemical bonds between these metal atoms and the dangling bonds of the surface Si atoms are found to be essentially covalent.     

碳化树脂全孔结构分析

本文阐述了改良的MP法,对含中孔和微孔的碳化树脂,用改良的MP法计算其微孔分布;用模型法计算其中孔分布,两种方法分析的和表示其全部孔结构分析。     

Estimation of micropore size distribution in active carbons from adsorption isotherms of water vapor

A possibility of estimation of the micropore size distribution in the carbon adsorbents with the developed micro-and mesoporous structure by analysis of the adsorption isotherms of water vapors was considered. At saturation water condenses in micropores in a form of a weakly compressed liquid. However, water molecules in micropores are packed not so closely as in the liquid because of steric hindrance. Therefore, the real density of water adsorbed in the micropores is lower than that of water adsorbed on an open surface and lower than the density of the normal liquid. An analysis of the adsorption isotherms of water vapors with account for the both opposite effects on the water density gives reliable data on the micropore sizes of the carbon adsorbents. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 40–43, January, 2007.     

Thin-layer adsorption chromatography with mixed mobile phases. 4. Extension of Ościk's equation to heterogeneous adsorbents

In this paper the equation for thin-layer adsorption chromatography with multicomponent mobile phases, proposed by O?cik in 1965 is extended to energetically heterogeneous solid surfaces. Other forms of this equation, more convenient in practical applications, are presented. Model calculations are made for TLC with binary mobile phases according to the modified form of O?cik's equation. Finally, this equation is compared with that of Snyder.