1、

A technological improvement was made on the synthesis of benzyl acetate by the condensation reaction with n tetrabutylammonium chloride as the phase transfer catalyst.

用氯化四正丁基铵作为相转移催化剂,对缩合法合成乙酸苄酯工艺进行改进。

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2、

The title compound is composed of four tetrabutylammonium cations, one [ PMovMo11O40] 4-heteropoly anion, two N, N-dimethyl formamide and one H2O molecule.

标题化合物是由4个四丁基铵阳离子、1个12-钼磷混合价杂多阴离子[PMo12O40]4-、2个DMF分子和1个水分子构成。

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3、

Fluorescence spectra study on 2,3,7,8 tetrachloro n ethyl phenothiazine

2,3,7,8-四氯代-N-乙基吩噻嗪的荧光法研究

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4、

Addition of zinc stearate as ionic plasticizer reduced both mechanical properties and conductivity. The effects of leaching time a n d tetrachloroethylene on zinc leaching processes are described.

加入硬脂酸锌会降低复合物的电导率及力学性能。考察了浸出时间、四氯乙烯的加入对锌浸出的影响。

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5、

The GC analysis results indicated that both alkane and polycyclic aromatics were degraded by VD 3, while the degradation of tetracosane was higher than that of n hexadecane.

采用气相色谱分析法,考察VD3菌对不同烃类的利用。结果表明,该菌既能降解烷烃,也能降解芳烃,对长链烷烃正廿四烷的降解率大于正十六烷。

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6、

Benzene had only slight influence on hydroisomerization of n-tetradecane.

苯的加入对正十四烷的异构化反应没有明显影响。

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7、

Hydrogenation of Benzene and Its Influence on Hydroisomerization of n-Tetradecane Catalyzed by Pt/ SAPO-11 Catalyst

Pt/SAPO-11催化剂上苯加氢转化及苯对正十四烷异构化反应的影响

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8、

The order of the total area of the microemulsion increasing with different kind of hydrocarbon is n cetane ≈ n tetradecane> n dodecane> n decane> n octadecane> octane.

不同的油类形成的微乳液区面积由大到小的顺序是:正十六烷≈正十四烷>正十二烷>正癸烷>正十八烷>正辛烷;

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9、

Hydrogenation of Pt/ SAPO-11 isomerization catalyst and effect of benzene on n-tetradecane hydroisomerization were investigated using benzene hydrogenation as a model reaction in a 10 mL fixed-bed down-flow reactor system.

在10mL连续流动固定床反应装置上,以苯的转化为模型反应考察了Pt/SAPO-11异构化催化剂的加氢性能及苯对正十四烷异构化反应的影响。

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10、

Surface Modified and XPS Analysis of Poly ( tetrafluoroethylene) by H_2/ N_2 Low Temperature Plasma

聚四氟乙烯表面等离子体修饰氨基及XPS分析

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11、

In the typical tetrahedral geometry, the coordination bond length formed from between B and N on the pyridyl is the most longest.

在四面体构型中,中心B原子与吡啶环上的N原子形成了配位键,且配位键的键长在B原子与临近配体所形成的键长中最长。

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12、

Electrochemical Preparation of Tetrahydroquinoline and Synthesis of N-Acetyl-tetrahydroquinoline

喹啉电解氢化制备四氢喹啉及其N-乙酰化衍生物的合成

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13、

This reaction used arylamines and N-alkyl lactams as substrates to form a series of tetrahydroquinoline derivatives via intermolecular coupling and cyclization reactions.

反应以芳基胺和N-烷基内酰胺为原料,分子间关环合成了一系列四氢喹啉衍生物。

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14、

A self-designed experimental device was set up to investigate the mass transfer process in the furfural extraction of model compounds. The results showed that the mass transfer rates of n-heptane and tetralin increased with temperature.

用自行设计的实验装置研究糠醛萃取模型化合物的萃取传质过程,结果表明该萃取传质过程中,正庚烷和四氢萘的传质速率随温度的升高而升高。

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15、

2,2,6,6-Tetramethyl-1-piperidine-N-oxyl free radical was synthesized by two steps.

2,2,6,6-四甲基哌啶氮氧自由基的合成分为两步。

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16、

Studies on generation and scavenging of oxygen radicals in the system of ammonium persulfate-n, n, n ', n'-tetramethyl Ethylenediamine

过硫酸铵-N,N,N′,N′-四甲基乙二胺体系产生的氧自由基及其清除的研究

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17、

One pot synthesis of ( R, R)-(+)-2, 3-dimethoxy-N, N, N ', N'-tetramethyl butanediamide

一步法合成(R,R)-(+)-2,3-二甲氧基-N,N,N′,N′-四甲基丁二酰胺

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18、

Studies on the kinetics of vinyl polymerization initiated with peroxydisulfate and n, n, n ', n'-tetramethylethylenediamine system

过硫酸盐-N,N,N′,N′-四甲基乙二胺体系引发乙烯基类单体聚合动力学的研究

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19、

Using N, N, N ′, N ′-tetramethylethylenediamine and potassium persulphate as a redox initiation system, high molecular weight poly ( vinyl acetate)( PVAc) was synthesized by aqueous deposited polymerization.

以N,N,N,′N′-四甲基乙二胺-过硫酸钾为氧化-还原引发体系,用水相沉淀聚合法合成了超高相对分子质量的聚醋酸乙烯(PVAc)。

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20、

Density functional studies on bridge bond properties of square-planar tetranuclear copper clusters Cu_4 ( CH_2XMe_n)_4

平面型四核铜簇合物Cu4(CH2XMe n)4桥键性质的密度泛函研究

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