发烟硫酸

本工作以四氢呋喃为原料、发烟硫酸为催化剂合成了聚四甲撑二醇（PTMG）。

The synthesis of polyoxytetramethylene glycol ( PTMG ) from tetrahydrofuran was investigated , using fuming sulfuric acid as catalyst .

本工作以固体磺酸代替液体发烟硫酸作为催化剂，研究了温和条件下环己酮肟的液相Beckmann重排反应，考察了不同种类的固体磺酸催化体系。

In this work , we explored the liquid-phase Beckmann rearrangement of cyclohexanone oxime under mild condition by using solid sulfonic acid instead of liquid fuming sulfuric acid as catalysts .

研究了以大庆馏分油为原料，以发烟硫酸为磺化剂制备天然石油磺酸盐（NPS）的工艺。

The preparation process of natural petroleum sulfonates ( NPS ) was studied making of Daqing distillate oil as feed stock and oleum as sulfonated agent .

对发烟硫酸浓度、发烟硝酸和DAP摩尔比、硝化温度、萃取方式等多个方面对反应的影响进行了研究。

The effect of Oleum concentration , Molar ratio of fuming nitric acid with DAP , nitrification temperature and extraction methods to the reaction were been studied .

以废聚苯乙烯（WPS）泡沫为原料，采用浓硫酸和发烟硫酸两种磺化方法制备性能良好的砼减水剂。

The PS water reducing agent , which is very effective for concrete , has been made from waste poly styrene ( WPS ) by sulfuric acid of fuming sulfuric acid sulfonation process .

以发烟硫酸-高氯酸为催化剂，通过四氢呋喃的阳离子开环聚合合成了窄分子量分布的聚四氢呋喃（PTHF）。

Polytetrahydrofuran ( PTHF ) with narrow molecular mass distribution was prepared by cationic ring-opening polymerization of tetrahydrofuran using H_2SO_4 · SO_3-HClO_4 system as a catalyst .

工业上用三氧化硫（SO3）与水反应制备硫酸，如果超越了饱合点则会形成发烟硫酸，可用于制备某些有机试剂。

It is made industrially by dissolving sulfur trioxide ( SO3 ) in water , sometimes beyond the saturation point to make oleum ( fuming sulfuric acid ), used to make certain organic chemicals .

在工艺条件为催化剂用量7·0mmol，反应温度473K，反应压力3·5MPa，反应时间3h和发烟硫酸中SO3含量50%时，甲烷转化率可达48·5%，目的产物甲醇收率为41·5%。

The maximum methane conversion of 48.5 % and methanol yield of 41.5 % were obtained under the conditions of 7.0 mmol catalyst , methane pressure of 3.5 MPa , reaction temperature of 473 K , reaction time of 3 h , and 50 % sulfur trioxide concentration .

本文按磺化反应原理设计了一套以十二烷基苯作为原料，以65%的发烟硫酸蒸发得到的SO3气体作为磺化剂的磺化反应实验装置，并对工艺条件进行了研究。

An experiment plant for sulfonation reaction was designed in this paper . In accordance with the principle of sulfonation , the dodecylbenzene was used as the material and SO 3 vaporized from 65 % fuming sulfuric acid as the sulfonating agent , and the art conditions were studied also .

丙烯腈、1-十六烯和发烟硫酸反应产物的分析和表征

Analysis and Characterization of the Reaction Product of Acrylonitrile , 1-Hexadecylene and Oleum

结果：酯化时使用发烟硫酸；

Results : In the esterification step , fuming sulfuric acid was used ;

以碘系列化合物为催化剂，在发烟硫酸溶剂中进行了甲烷液相选择性氧化制取甲醇。

The selective oxidation of methane in oleum was catalyzed by the iodine compounds .

发烟硫酸储罐的腐蚀与防护

Corrosion of Fuming Sulfuric Acid Tank and Protection

高浓度发烟硫酸的生产与储存

Production and storage of high - grade oleum

高浓度65%发烟硫酸生产方法

Production Methods of 65 % Oleum

用三氧化硫磺化工艺替代发烟硫酸磺化工艺是可行的。

It is feasible that fuming sulfuric acid sulfonating technology is substituted by sulfur trioxide sulfonating technology .

国内外发烟硫酸生产方法很多，通过比较分析找出了管壳卧式蒸发器生产法是适合的生产工艺方案。

The paper discussed present processes of oleum production , found the process using tube-shell evaporator is reliable .

发烟硫酸含三氧化硫酸的一种腐蚀性溶液施用硫磺对滇池北岸碱性菜田氨挥发的影响

Influence of Elemental Sulfur on Ammonia Volatilization in a Vegetable Soil in the Northern Bankside of Dianchi Lake

以大庆糠醛抽出油为原料，发烟硫酸为磺化剂，合成了石油磺酸钠。

Sodium petroleum sulfonate ( SPS ) was synthesized with furfural extracted oil as raw material and oleum as sulfonated agent .

通过对比试验，探讨采用不同质量的苯酚、浓硫酸代替发烟硫酸配制酚二磺酸对测定结果的影响。

With contrast experiments , this paper discussed the influence of dosage of phenol and concentration of sulfuric acid on the results .

尝试使用不同磺化试剂进行磺化反应，发现使用发烟硫酸进行磺化反应效果较好。

Different reagents were attempted for sulfonation reaction , and the satisfied results were obtained by using fuming sulphuric acid as sulfonating reagent .

在催化机理的研究中，用实验结果否定了甲烷在发烟硫酸中选择性催化氧化的自由基机理，认为该反应属亲电取代机理。

In the study of catalytic mechanism , free radical mechanism was denied through the experiment , and the electrophilic alternative mechanism was suggested .

本文分析了甲烷液相选择性催化氧化制甲醇的国内外研究现状，研究了甲烷在发烟硫酸中选择性催化氧化制甲醇的工艺路线。

The current researching of catalytic selective oxidation of methane to methanol in liquid phase at home and abroad was reviewed in this paper .

利用不同的加料方法和不同加料顺序合成了聚苯乙烯/丙稀酸共聚物，并在吡啶中以发烟硫酸为磺化剂进行磺化制得磺化苯乙烯/丙烯酸（St/AA）共聚物。

The sulfonated copolymers of styrene and acrylic acid ( St / AA ) were synthesized by using different feed methods and different feed sequences .

目前，工业上生产己内酰胺的最后一个步骤是环己酮肟的贝克曼重排反应，它是在发烟硫酸或浓硫酸的催化下进行的。

At present , the last step of commercial processes for caprolactam is Beckmann rearrangement of cyclohexanone oxime Catalyzed by fuming sulfuric acid or concentrated sulfuric acid .

甲烷部分氧化反应的研究中催化剂的开发是该研究的关键，迄今为止，最具工业化前景的是以碘为催化剂在发烟硫酸体系中的甲烷液相部分氧化反应。

Until now , it has the most industrialized future with iodine as a catalyst system in oleum in the liquid phase of partial oxidation of methane reaction .

巴陵分公司一座发烟硫酸储罐于1997年投用，三年多来在罐顶、焊缝及罐壁部位多次穿孔泄漏。

A fuming sulfuric acid tank commissioned in 1997 in Baling Petrochemical Company have experienced a number leakages at the top of the tank , welds and wall shell .

经过多次试用，其操作时间和得到的结果，与以前使用的硫酸、硝酸加发烟硫酸的方法基本相同。

This method has been used for many times and similar operation time and product are obtained as that using the treatment with a mixture of sulfuric acid , nitric acid and fuming sulfuric acid .

本文选择发烟硫酸（50%）作为磺化剂所得的活性物含量最高，选择单烷基二苯醚与发烟硫酸摩尔比为1.0：1.6较为合适，产品活性物含量达到58.4%。

This choice fuming sulfuric acid ( 50 % ) as sulfonating agent obtained the highest content of active matter , choose one alkyl ether and fuming sulfuric acid molar ratio of 1.0:1.6 more appropriate product to 58.4 % active matter content .

以H5PV2Mo10O40为催化剂，在发烟硫酸中进行了甲烷液相部分氧化，考察了催化剂用量、反应温度、反应时间和发烟硫酸浓度等工艺条件对反应收率的影响。

The partial oxidation of methane by the H_5PV_2Mo_ 10 O_ 40 catalyst in oleum was studied . The effects of catalyst amount , reaction temperature , reaction time , and sulfur trioxide concentration on the methane conversion and methanol yield were investigated .