1.In the gas chromatographic separation of m-xylene and p-xylene with mixed stationary phases composed of haptakis (2, 3, 6-tri-O-pentyl )-β-CD/AgNO3, haptakis (2, 3, 6- tri-O-pentyl)-β-CD/TINO3 or Benton-34/AgNO3 carrier, we found that the first two mixed stationary phases have positive synergistic effects.
在以全戊基 β－环糊精和 AgNO3、全戊基β－环糊精和TINO3以及有机皂土－34和AgNO3为混合固定相对间二甲苯及对二甲苯进行GC分离的过程中，发现前两种混合固定相具有协同效应，而后一种却是加和效应。
2.The present paper analyses the relative volatility of ethyl-benzene/styrene and meta-xylene/styrene and para-xylene/styrene is affected by pressure variation in ethyl-benzene/styrene packed tower, and also analyses the fractional composition is affected by pressure variation in above packed tower.
摘要通过模拟计算，分析乙苯／苯乙烯塔压力变化对乙苯／苯乙烯、间二甲苯／苯乙烯、对二甲苯／苯乙烯相对挥发度的影响；压力变化对塔釜乙苯含量、间二甲苯含量、对二甲苯含量及塔顶乙苯中苯乙烯浓度的影响。
3.The p xylene reacts with Br 2 in the presence of Fe filing at room temperature to give 2|bromo|p|xylene. The 2|bromo|p|xyiene is converted to grignard reagent,which reacts with bromobenzene in the presence of NiCl 2 (PPh 3) 2,a selective cross|coupling catalyst, 2,2 dimethylbiphenyl is synthesized,the 2,5|dimethylbiphenyl is oxidated with KMnO 4 to give the title compound.
铁粉催化下 ,对二甲苯于室温与溴反应 ,得到 2 -溴对二甲苯 ,将其制备成相应的格氏试剂 ,在 Ni Cl2 ( PPh3) 2 催化下与溴苯进行交叉偶联 ,得到 2 ,5-二甲基联苯 ,再用高锰酸钾水溶液氧化 ,合成标题化合物。
4.Liquid-Liquid Equilibria of Acetonitrile-Water-Xylene and Acrylonitrile-Water-Xylene Ternary Systems
乙腈-水-二甲苯和丙烯腈-水-二甲苯体系的液液平衡
5.The results indicated that,in the conditions of nanometer TiO2 catalyzer,1000 W symmetrical ultraviolet luminous intensity,1000 m3/h blast volume,350 mg/m3 inlet xylene gases concentration and ozone addition,the average removal efficiency of xylene reached 90%.
结果发现,在以纳米型TiO2作为催化剂、在紫外光强为1000 W且布光均匀、风量为1000 m3/h、进口浓度350 mg/m3、通入臭氧的工况条件下运行,整个系统对二甲苯的去除率平均在90%以上。
6.Solid-Liquid Phase Equilibria and Excess Gibbs Free Energies for p-Xylene+Cyclohexane,p-Xylene+Dimethyl Sulfoxide
对二甲苯＋环己烷及对二甲苯＋二甲基亚砜的固液相平衡和过量吉布斯自由能
7.Spin-lattice relaxation times ( T1 ) and nuclear Overhauser effect ( NOE ) of 13C in the methyl of ο-xylene and m-xylene between 28℃ and 90℃ are measured.
在28—90℃的温度范围内测量了邻二甲苯和间二甲苯的甲基碳的T_1和NOE因子.
8.SKI-300 xylene isomerization catalyst is capable of converting the unbalancedC_8 aromatic hydrocarbon mixtures into mixtures with balanced composition andethyl benzene into xylene.
SKI-300型二甲苯异构化催化剂能将非平衡的 C_8芳烃混合物转化为平衡组成,使乙苯转化为二甲苯。
9.When CO 2 reached 6 mg/m 3 and xylene reached 1 285 mg/m 3 the blood indices changed very markedly, thus suggesting a condition of compensative respiratory acidosis.
当CO2浓度达到6mg／m3，Xyl浓度达到1285mg／m3时血液指标出现非常显著的变化，为代偿性呼吸性酸中毒。
10.This paper introduces the technology for the preparation of SKI-400-40 catalyst for xylene isomerization as well as its catalytic performance.
介绍了SKI－400－40二甲苯异构化催化剂的制备工艺及其催化性能。
