丁烷

In this paper, a single-tube wall-cooled fixed-bed reactor filled with 30 g of cylindrical catalyst was set up, and periodic operation performance was investigated.

本文在小试规模(装填30 g原粒度工业催化剂)的单管固定床反应器实验装置上，开展了丁烷选择氧化反应人为非定态操作性能的研究。

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene PolymerizationFacile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that:1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新贡献如下：(1)、球形氯化镁负载后过渡金属催化荆催化乙烯聚合本文将配合物2，3-双(2，6-二异丙基苯亚胺)丁烷二溴化镍(1)和配合物2，6-二[1-(2，4，6-三甲基苯亚胺)乙基]吡啶二氯化铁(2)分别直接负载于经不同热脱醇温度处理的球形氯化镁载体上，研究了氯化镁载体的脱醇温度对负载化后过渡金属催化剂及其聚合物的影响，研究表明：1、通过对球形MgCl_2·2.56C_2H_5OH载体进行热脱醇处理，可以获得合适机械强度、较高比表面积和较高孔隙度的球形氯化镁载体；2、BET，XRD，IR，SEM，GPC和DSC研究表明，脱醇温度极大地影响负载后过渡金属催化剂的活性和聚合物的性能。

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene Polymerization Facile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that: 1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新贡献如下：(1)、球形氯化镁负载后过渡金属催化荆催化乙烯聚合本文将配合物2，3-双(2，6-二异丙基苯亚胺)丁烷二溴化镍(1)和配合物2，6-二[1-(2，4，6-三甲基苯亚胺)乙基]吡啶二氯化铁(2)分别直接负载于经不同热脱醇温度处理的球形氯化镁载体上，研究了氯化镁载体的脱醇温度对负载化后过渡金属催化剂及其聚合物的影响，研究表明： 1、通过对球形MgCl_2·2.56C_2H_5OH载体进行热脱醇处理，可以获得合适机械强度、较高比表面积和较高孔隙度的球形氯化镁载体； 2、BET，XRD，IR，SEM，GPC和DSC研究表明，脱醇温度极大地影响负载后过渡金属催化剂的活性和聚合物的性能。

The synergic effects between 1,4-Bis(α-alkylpyridinium)butane/hexane Dibromide gemini surfactantsand sodium dodecyl benzoic sulfatehave been studied,the effect of the ratio of GPS/SDBS on the surface tension and critical micellar concentrationof the mixture have been investigated.

研究了溴化1，4/1，6-双-α-烷基吡啶丁烷/己烷双子表面活性剂与普通阴离子表面活性剂十二烷基苯磺酸钠之间的协同效应，考察了二者复配比例对体系表面张力和临界胶束浓度的影响。

Keywords gemini surfactant;1;4-Bis（α-alkylpyridinium）butane/hexane dibromide;critical micellar concentration;synergic effect

双子表面活性剂；溴化1； 4/1； 6-双α-烷基吡啶丁烷/己烷；临界胶束浓度；协同效应

Relaxation measurements obviously show that the spacer chain is rigid in the surface layer of the hydrophobic micellar core and the side alkyl chains of 16-3-16 are packed more tightly than those of N,N′-bis-α,ω- alkane butane diammonium dibromide (16-4-16) in the micellar core.

弛豫时间测定表明，与N，N′-双-α，ω-丁烷溴化铵(16-4-16)相比，16-3-16在胶束表面的spacer链段更僵硬，在胶束核区的烷烃侧链排列的更紧密。

We can provide various Super Fuel Saver for improving the combustion , fuel oil boilers from appliance boilers to heat power boilers, various combustion furnaces, and internal combustion engines in automobiles (two-cycle and four-cycle, diesel and gasoline), trucks, ships and jets, where the fuel employed is liquid or gaseous hydrofuels, such as oil, gas, natural gas, propane, kerosene, gasonline, fuel oil, butane, ect.

我们可以提供各种超级燃料金丹改善燃烧，燃油锅炉从家电锅炉热电站锅炉，各种燃烧炉与内燃机汽车(双周期和四周期，柴油和汽油)，卡车，船只和飞机，凡受聘燃料是液态或气态hydrofuels ，如石油，煤气，天然气，丙烷，煤油， gasonline ，燃油，丁烷等。

Where necessary, nitrogen heteroatom substitution in a six-membered ring was modelled by alteration of the heat of formation by the same amount as benzene to pyridine conversion.

硫磺桥梁在phenanthro[4，5-bcd]thiophene 由转换塑造了从氧气桥梁在4H-cyclopentaphenanthrene 成硫磺桥梁使用区别在丁烷和dimethylthioether 之间。

Stuart Abramson, MD, a pediatric immunologist at Texas Children''s Hospital, also in Houston, says that cigarette smoke contains about 4,000 chemicals and a sizable number of carcinogens and contaminants, including benzene, butane and hydrogen cyanide.

斯图尔特阿布拉姆森，医学博士，儿科免疫学家在得克萨斯州儿童医院，也是在休斯顿说，香烟烟雾中含有约4000种化学物质和相当多的致癌物质和污染物，包括苯，丁烷和氰化氢。

A selective and mild PS-DIB/ionic-liquid immobilized 2, 2, 6, 6-tetramethyl-piperidin-4-ol-N-oxyl catalytic oxidation procedure of alcohols to the corresponding aldehydes and ketones in ionic liquid BF4 at room temperature was developed. The oxidant PS-DIB was prepared via the iodation and acetylation of polystyrene resin. For the preparation of the ionic-liquid immobilized TeMPO catalyst, 4-(2, 2, 6, 6-Tetramethyl-1-oxyl-4-piperidoxyl)butyl bromide was first synthesized from TeMPO and 1, 4-dibromobutane.

将聚苯乙烯树脂先碘化再乙酰基化，制得了负载型二乙酰氧碘苯作为氧化剂。2， 2， 6， 6-四甲基－N-氧自由基哌啶醇与1， 4-二溴丁烷反应生成4-溴丁氧基－2， 2， 6， 6-四甲基－哌啶－1-氧化物，再与N-甲基咪唑发生季铵化反应，生成的溴化季铵盐与四氟硼酸钠进行离子交换制得氟硼酸型2， 2， 6， 6-四甲基－N-氧自由基哌啶负载离子液体。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。