磺酰胺的制备

由N，N-二甲基-2-氯烟酰胺经成盐反应，酸化反应，氧氯化反应，氨化反应制得除草剂烟嘧磺隆的关键中间体2-氨基磺酰基-N，N-二甲基烟酰胺。总收率可达65．1％。     

氮在钌单晶表面Ru(0001)上的吸附

钌系氨合成催化剂作为第二代氨合成催化剂,近年来日益受到重视。研究氮分子在钌表面上的离解吸附对提高钌催化剂的催化性能有着十分重要的意义。综述了氮分子在Ru(0001)单晶表面吸附的研究进展，并指出钌催化剂的发展方向。     

Combined XPS and TPR study of sulfur removal from a Pt/BaO/Al2O3 NO x storage reduction catalyst

Pt/Al₂O₃ and Pt/BaO/Al₂O₃ catalysts (1 wt% Pt, 10 wt%BaO) were sulfated under conditions simulating a real NSR catalyst operation. Comparative TPR and XPS studies of sulfur removal from Pt/Al₂O₃ and Pt/BaO/Al₂O₃ catalysts indicate that the sulfur removal from Al₂O₃ surface precedes reductive decomposition of BaSO₄ (250–400 °C). Barium sulfate decomposition started with further increase in desulfation temperature at the point of surface atomic ratio Ba:S = 1 (~450^o). Simultaneously, an intensive formation of sulfide species on the catalyst surface was observed. Thermodynamic analysis of the desulfation process allows us to hypothesize that barium sulfide formation may hinder sulfur removal under reducing conditions.     

纳米TiO2改性聚乙烯膜抗菌性能的研究

采用纳米粉体的分散技术和掺混技术，在聚乙烯中加入纳米TiO2制得纳米TiO2改性聚乙烯膜，并对该膜的抗菌性、抗变色性、使用安全性进行了研究。结果表明，纳米TiO2改性聚乙烯膜具有良好的抗菌性能，在不同光源条件下对不同微生物菌株的杀菌率都达到92％以上，且具有抗菌广谱、长效、安全稳定等性能。     

气相色谱-质谱法联用定性2,2-二羟甲基丁醛

应用气-质谱联用法。并结合质谱解析及化学合成，探讨了2，2-二羟甲基丁醛的裂解方式。确定了该物质的质谱谱图。     

2,6-二异丙基萘的合成与分离技术的进展

2,6-二异丙基萘(2,6-DIPN)是一种重要的化合物,可用于制取高级聚酯材料和液晶聚合物。本文论述了由萘经选择性烷基化生成2,6-DIPN的研究进展,着重阐述了合成2,6-DIPN所用催化剂的研究;还总结了从异构体中分离2,6-DIPN的方法,并对吸附分离法做了详细阐述;指出由萘作原料,沸石分子筛作催化剂制备2,6-DIPN是石油萘生产的理想的技术方向。     

用纯氧化铕模拟基体AES法测定氧化铥中的钬、饵、镱、镥和钇

用于发射光谱分析的氧化铥基体不但难于寻找,而且价格昂贵.本文用氧化铕模拟氧化标基体的办法,其测定结果与别的方法基本符合.为寻找代替氧化铥基体提供了一条途径.     

SULFUR RECOVERY WITH REDUCED EMISSIONS, LOW CAPITAL INVESTMENT AND HYDROGEN CO-PRODUCTION

The main disadvantage of the Claus process is that by introducing air as oxidant a large volume of tail gas is produced. This must be treated to reduce atmospheric emissions of sulfur-containing gases. The costs of the tail-gas unit are a significant fraction of the total capital and operating costs for sulfur recovery. A new process uses thermal decomposition of hydrogen sulfide in the presence of carbon dioxide instead of air oxidation. The products of this reaction are hydrogen, carbon monoxide, elemental sulfur, water vapor and carbonyl sulfide. Carbonyl sulfide is easily converted to H₂S and C0₂ by liquid- or vapor-phase hydrolysis. Unreacted H₂S and C0₂ are recovered by absorption and recycled to the reactor. Since no air is introduced, there is no tail gas and the tail-gas unit is eliminated, giving a substantial reduction in capital investment. The concentrations of sulfur-containing gases in the product streams depend only on the operation of the absorber and stripper units and can be controlled to very low levels by increasing stripper boil-up. Process operating costs depend on the level of sulfur recovery required and can also be much lower than those of the modified Claus Process.

The process chemistry depends on a shift in the equilibrium of H₂S decomposition caused by reaction of hydrogen with C0₂ by the reverse of the water-gas-shift reaction. Catalysts for this chemistry have been identified. Reactor conversion is further improved by rapid cooling of the reactor effluent gas. Other aspects of process design and operation confer further advantages with respect to the Claus process; however, the process equipment used is similar to that used in a Claus plant. Retrofit of existing plant to the new technology can therefore be considered.     

Sintering of Pt/Al2O3 reforming catalysts: EXAFS study of the behavior of metal particles under oxidizing atmosphere

The effect of an oxidative atmosphere (300 °C) is studied on fresh and sintered unchlorinated naphtha reforming catalysts containing 0.6–1% Pt. The TPR profiles show that only one species is formed using our experimental conditions, regardless of the mean crystallite size of the metal particles. The structural information supplied by EXAFS compared with cuboctahedral particle modeling, implies that such species is a surface platinum oxide, the structure of which is close to that of PtO₂, but largely distorted. This is true whether the catalyst is sintered or not.     

多孔TiO2陶瓷光催化剂降解糠醛废水

以钛酸四丁酯等为原料，采用简单工艺制得多孔TiO2陶瓷光催化剂；并研究了利用多孔TiO2陶瓷光催化降解糠醛废水。结果表明，在紫外灯下照射60min，糖醛废水的COD去除率可达59．8％，而通入空气有利于污染物的去除。