甲苯

Research on thermodynamics and kinetics of pyrolysis reaction mechanism Kinetic and thermodynaimic research of the pyrolysis reaction mechanism of toluene was conducted at different temperature range 298-1223K. The result shows that the pyrolysis reaction firstly occurs at the methyl on the benzene ring, and produces benzyl.

裂解机理的热力学与动力学研究在298K-1223K的温度范围内对甲苯热解机理的热力学和动力学研究结果表明，热解首先发生在苯环甲基C-H键上并生成卞基自由基，主要产物为联二甲苯，反应的活化能ΔE〓=402.27kJ/mol。

Dichloro-2 pyridine azo-2,4 diamine methyl benzene is used as the developer for cobalt in determination of trace cobalt in iron ore.

应用5—［（3，5—二氯—2—吡啶）偶氮］—2，4—二氨基甲苯作钴的显色剂测定铁矿石中的微量钴，最大吸收峰位于波长590nm处，摩尔吸光系数为1。

The methyl benzene Mi Shi is as effective as nematode to the tapeworm, Rao insect, hookworm and whip insect.

甲苯咪唑对蛔虫、蛲虫、钩虫、鞭虫和线虫有效。

The degree of hydrogenation of methyl benzoate might be controled by adding the promoters and changing the nano-size of ZnO. For hydrogenation of methyl benzoate to benzaldehyde, the active-structure of a catalyst should be modified to decrease the absorption of benzaldehyde on the surface of it, because benzaldehyde absorbed is hydrogenated easily. Using 30-40％ZnO/γ-Al〓O〓 or Li-30％ZnO/γ-Al〓O〓, a higher selectivity to benzaldehyde is obtained. Hydrogenolysis of methyl benzoate to toluene or benzene is carried out effectively using a catalyst modified. For instance, 45.3％ selectivity to benzene and 100％ conversion of methyl benzoate at 420℃ was obtained over 10％ZnO/MCM-41 with the nano-size particles of ZnO (2.4nm).

也可以通过助催化剂的添加和活性组分的纳米化，并根据苯甲酸甲酯多步加氢反应的特点实行加氢深度的调控：苯甲酸甲酯选择性加氢制苯甲醛中，由于苯甲醛容易进一步加氢，需要对活性结构进行调变，以减弱苯甲醛的吸附，使用30-40％ZnO/γ-Al〓O〓催化剂或Li调变的Li-30％ZnO/γ-Al〓O〓催化剂，可获得较高的苯甲酸甲酯加氢制苯甲醛的活性；采用同样的方式，苯甲酸甲酯选择性氢解为甲苯或苯也获得了较好的结果，如使用ZnO纳米化的10％ZnO/MCM-41催化剂，在420℃，可获得45.3％的苯选择性，苯甲酸甲酯完全转化。

The synthetic liquid fuel is compounded with basic material including methanol and ethanol as well as additives including stearic acid, peroxide of oil and grease, potassium chlorate, zinc peroxide, methyl benzene, methane, cyclohexane, etc.

本发明是一种合成液体燃料及其生产方法，这种燃料由基料甲醇、乙醇和硬脂酸、过氧油脂、氯酸钾、过氧化锌、甲苯、甲烷、环已烷等添加剂经混合加热反应配制而成。

The novel process of preparation of DNS by means of dioxygen liquid-phase oxidation of NTS with synthesized metal phthalocyanine complex catalyst in alkali solution under mild condition were systematically investigated for the first time.

首次以金属酞菁络合物为模拟酶催化剂，在碱性水溶液中，于温和条件下，研究了4-硝基甲苯-2-磺酸催化氧化制取4，4'-二硝基二苯乙烯-2，2'-二磺酸的方法和工艺。

Using PbO2/Ti as anode,pure lead as cathode,H2SO4 as medium,MnSO4 was electrolyzed into Mnin a undivided cell,then,using Mnas oxidant, p-chloro-toluene was oxidized into p-chloro-phenylaldehyde.

采用无隔膜电解槽，以PbO2／Ti为阳极，纯Pb为阴极，MnSO4在H2SO4介质中电解为Mn，于电解槽外氧化对氯甲苯生成对氯苯甲醛。

Through research and analysis of data, it was observed that the length and width of bark fiber varied according to the lop and age, the results show the fiber of the Salix bark is longer than the Salix and width of fiber almost same, fiber length of the Salix bark mainly influenced by the times of lop. The ash in Salix bark,1% Sodium Hydroxide Solubility in Salix bark, water solubility in Salix bark, Ethanol-Toluene in Salix bark, acid-insoluble lignin in Salix bark changed with the lop and age is also been investigated, the component of Salix bark is higher than Salix except acid-insoluble lignin,and it's high effected by times of lop; the TG analysis and DSC analysis is been used on the Salix bark and Salix to study the character of the hot-action, and the rang of the pyrogenate temperature is confirm; the quantity of Salix bark effect on the MOR, MOE, swelling in 24h water, nail withdraw and inner strength was determined, the results show that the Salix bark notability effect on the properties of board and dropped it; the properties of the Salix bark board is nearly the board product by other bark residues, it was established the multi regression equation of each properties and optimized the fitting produce condition of Salix bark board.

通过试验和数据处理，得出了沙柳树皮纤维长度、宽度随平茬和材龄的变化规律，结果表明沙柳树皮长度要比沙柳材的要长，宽度基本相同，沙柳树皮纤维长度主要受平茬次数的影响；找出了沙柳树皮中灰分、冷热水抽出物为、1%NaOH抽出物为，甲苯乙醇抽出物、酸不溶木素与平茬次数和材龄之间的关系，除酸不溶木素外，其他成分均明显高于沙柳材，沙柳树皮的化学成分主要受平茬次数的影响；利用TG和DSC法分析了沙柳树皮和沙柳材的反应热特征，确定了热解的温度范围；研究了沙柳树皮量对于刨花板MOR、MOE、吸水厚度膨胀率、握钉力以及内结合强度的影响，结果证明沙柳树皮量对于刨花板的各项性能指标影响显著，它的掺入降低了刨花板的各项性能；对沙柳树皮板的研究表明，沙柳树皮板的各项性能与同类树皮板的性能基本相近，建立的二次回归模型稳定，并利用回归方程求出了适宜的沙柳树皮板制造工艺。

DETERMINATION OF CORROSIVE SULPHUR IN TOLUENES,XYLENES AND SOLVENT NAPHTHAS.

甲苯、二甲苯和石脑油溶剂腐蚀硫的测定。

It is well known that aromatics are key raw materials and important starting materials for many intermediates and petrochemicals, playing an important role in the modern national economy, benezene, toluene and xylenes in particular.

芳烃是重要的基本有机化工原料，尤其是苯、甲苯和二甲苯，在现代国民经济中有着极其重要的地位和作用。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。