无机复合混凝剂ISF-01处理日用化学工业废水的研究

研究了新型无机复合混凝剂ISF-01对日用化学工业废水的絮凝、破乳效果及混凝剂用量和体系pH值对混凝效果的影响,并与其它无机絮凝剂进行了比较。试验结果表明．ISF-01混凝剂有较宽的pH适用范围,对日用化学工业废水具有良好的混凝效果,与传统混凝剂相比,它具有破乳性能好、投药量少、絮体沉降速度快、上清液透光性能好的特点。     

异核双金属化合物Cp(CO)2Fe-Sn(CH2 CMe2Ph)3的合成与晶体结构

以四氢呋喃为溶剂 ,合成了含Sn、Fe的环戊烯基二羰基铁的异核双金属化合物 ,并对配合物进行了元素分析、IR光谱分析 ,使用SimensP4单晶衍射仪测定了配合物的晶体结构。结构分析表明 ,该配合物属于三斜晶系 ,空间群P - 1。晶胞参数 :a =10 0 79(2 )A° ,b =10 975 0 (10 )A°,c =17 14 5 (3)A° ;a =82 0 30 (10 )° ,β =77 770 (10 )°,γ =6 3 70 0 (10 )° ,Z =2     

The effect of Al content on the wettability between liquid iron and MgOAl2O3 binary substrate

In the present study, the wettability between liquid iron with two different Al contents and MgOAl₂O₃ binary substrates was studied in reducing atmosphere. The contact angles between liquid iron with 18?ppm Al and MgO, MgO·Al₂O₃, Al₂O₃ were 133.5°, 113.7°, 126.9° respectively. With the variation of the substrate composition, the contact angles for the intermediate binary phases of the three components (MgO, MgO·Al₂O₃, Al₂O₃) obeyed the Cassie theory. In the experiment using iron with 370?ppm Al, all the contact angles were higher than that using low Al-containing iron. The surface of the iron drop was covered with an oxide layer, which mainly consisted of many small particles. With the variation of the substrate gradually from MgO to Al₂O₃, the composition of the oxide layer changed from MgO·Al₂O₃ to CaOAl₂O₃. The formation of the oxide layer prevented the spreading of liquid iron, leading to the increase of the contact angle.     

Emission of excited potassium species from an industrial iron catalyst for ammonia synthesis

The angular dependence of potassium emission-desorption is studied from a fused iron catalyst of the type used for ammonia synthesis. The excited species (K^*, K _n ^* , etc.) and positive ions K⁺ have strongly different angular distributions. The bilobular distribution measured for ion desorption is concluded to be either due to excited atoms, so-called Rydberg atoms, or excited clusters. Both types of species have to desorb from the edges of the sample and become field ionized and deexcited just outside the sample, as reported in previous studies on an iron oxide catalyst. The peak in the normal direction measured for excited species is due to excited cluster formation outside the catalyst surface. Similarities with previous results for other catalysts are observed. The possibility that the promoter function of potassium in the ammonia synthesis is due to excited species is pointed out.On leave from Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Cracow, Poland.     

新型表面活性剂——烷基糖苷的合成与应用研究

以EDTA、十二烷基苯磺酸钠和磷酸为主要成份的复合催化剂，采用直接苷化法了十二烷基葡萄糖苷（C12－APG），考察了此非均相反应体系中的反应温度、反应时间、催化剂用量以及醇糖比对反应过程的影响，实验结果表明，在最佳的工艺条件下，反应时间为3．5h，糖苷得率可达到132．4％，并对其重用机理和所合成糖苷的应用性能了进一步探讨。     

无机物——聚醋酸乙烯复合乳液粒子结构及主要性能

本文对均聚醋酸乙烯乳液及其与无机物的混合物,无机物——聚醋酸乙烯复合乳液的粒子结构进行了比较,阐述了复合乳液的主要性能。     

常温清洁铁系磷化液研究

为使磷化实现一级清洁生产,开发了一种用于钢铁表面涂装前处理的常温清洁铁系磷化液。该磷化液组分所有的成分均参加成膜反应生成磷化膜、水、沉渣或在磷化膜干燥过程中挥发。此磷化液不含亚硝酸盐和重金属,在5~40℃下浸渍磷化5~10 m in,在每平方米即可生成质量约为0.7 g的膜和耐CuSO4溶液点滴时间达90~140 s的彩色磷化膜。且磷化后可免水洗。     

关联基础设施系统脆弱性分析

鉴于基础设施系统对社会生产和人民生活的重要性,分析基础设施系统的脆弱性,提出相应的抗干扰措施和改进策略,提高基础设施系统的可靠性,成为了当前研究的一个热点课题。基于此,在对基础设施系统脆弱性分析成果的基础上,从方法论的角度探讨了关联基础设施系统的脆弱性,并以华中地区某城市电力—供水网络为例分析了网络在节点级联故障下的脆弱性,为控制基础设施系统的级联故障、增强系统的抗干扰能力提供决策支持。     

锤头用中锰耐磨铸钢的生产与应用

含碳含硅较高的中锰铸钢是一种可用于制造锤头的耐磨铸钢，破碎白云石时，此种钢制作的锤头的单耗为７．１ｇ／ｔ，而高锰钢制作的锤头单耗为１７．４ｇ／ｔ。中锰耐磨铸钢属脆性材料，在非强烈冲击条件下使用，是高锰钢耐磨性的２．４５倍，适用于破碎中低硬度的矿石。文中介绍了中锰铸钢的成分、生产工艺、热处理过程和机械性能。     

用钛白废酸和废铁屑制备聚合硫酸铁试验研究

利用钛白废酸和废铁屑制备了无机高分子絮凝剂聚合硫酸铁。详细研究了聚合硫酸铁制备过程中各因素对亚铁氧化、三价铁水解和聚合等过程的影响。确定了制备聚合硫酸铁的最佳工艺条件为：(1)氧化过程：pH为1．5，氧化剂与亚铁的物质的量之比为0．3，氧化温度为60℃，氧化时间为3h；(2)聚合过程：硫酸根与全铁的浓度比为1．4，陈化时间为2h。