查询词典 sulfur ether

The average sulfur content of 11 # is 3.99%, and the organic shlfur is 55%～90% of its total sulfur. The correlation relations between the sulfur and coal ash, as weel as geneses of sulfur in the coal seam are studied too.

煤的用途不同，对硫分的要求也是不同的；同时，煤中不同的硫分，脱除方法也是不相同的，无机硫的大部分可用传统的洗选技术和方法脱除，但有机硫就很难用传统的洗选技术和方法脱除了。

Results show that Calamagrostis angustfolia wetland is higher than cropland in content of total sulfur and available sulfur, which indicates cultivation depletes soil S, and soil total sulfur and available sulfur show a decreasing trend with each passing year.

结果表明，小叶章湿地土壤总硫和有效硫含量高于开垦后的农田土壤，开垦导致土壤硫含量下降，且随着耕种年限的增加，土壤总硫和有效硫含量呈逐年下降趋势。

Sulfur isotope of franeolite indicate that sulfur isotope value of phos phate concretion is larger than that of evaporite sulfate, there is little doubt that sulfur isotope fraetionation happens during phosphorite diagenesis, heav ier sulfur is laid in sediments because of formation of H〓S.

磷结核的稳定S同位素测试表明：其值大于同时代海水蒸发盐的值，这是由于在成岩作用过程中发生了S同位素分馏，生成H〓S，从而使沉积物中富集〓S。

In order to solve these problems, supported by Foundation for University Key Teacher by the Minisity of Education, we study on distribution of sulfur in coal samples of ShenYang HongYang No. 3 coal mine and find that the sulfur in pyrite is more than 72％ in the total sulfur of the coal. The pyritic sulfur immerges in coal and is diffcult to be removed by common methods.

针对上述问题，我们在教育部高等学校骨干教师资助计划的支持下，以沈阳红阳三矿煤为试样，对其中硫的的赋存状态进行了研究，发现该试样中的硫有72％以上为黄铁矿硫，而且黄铁矿多数呈细小颗粒浸染于煤的有机质中，用常规分选方法脱除比较困难。

It is also discovered that some aliphatic sulfur in char can change to thiophenic sulfur form in mild pyrolysis condition. In addition, some thiophenic sulfur can be hydrogenated to form aliphatic sulfur in hydropyrolysis.

在热解条件下，半焦中存在脂肪硫向噻吩硫的转化；加氢热解条件下，噻吩硫可加氢转变为脂肪类有机硫。

In the producer gas sulfur originates in the gasification uses the coal, mainly by the H2S form existence, gasifies with the coal in the sulfur has 80% to transform H2S approximately to enter the coal gas, if, gasifies with the coal including the sulfur quantity is 1%, after the gasification changes over to in the coal gas to form about H2S approximately 2-3g/Nm3, but professions and so on ceramics, kleit contain the sulfur quantity request to the coal gas are 20-50 mg/Nm3; If in after coal gas H2S burning transforms SO2 is completely about 2.6g/m3, stipulates the SO2 highest emissions density target compared to the country to outdo many.

发生炉煤气中的硫来源于气化用煤，主要以H2S形式存在，气化用煤中的硫约有80％转化成H2S进入煤气，假如，气化用煤的含硫量为1％，气化后转入煤气中形成H2S大约2-3g/Nm3左右，而陶瓷、高岭土等行业对煤气含硫量要求为20-50 mg/Nm3；假如煤气中的H2S燃烧后全部转化成SO2为2.6g/m3左右，比国家规定的SO2的最高排放浓度指标高出许多。

At present, diesel oil plays a more and more important role in the various kinds of fuel. But compare to gasoline, diesel oil has a high rate of sulfur compound. The sulfur compound is existed mainly as thiphene and thiphene ramification. These kinds of sulfur compounds are not easy to remove by adding hydrogenation. Thats why diesel oil has a high rate of sulfur compound. So it makes profound desulfurization a hot topic and a difficult problem in and outside the country. This paper takes dibenzonthiophene as a model to study the profound desulfurization of diesel oil with the help of biology and the oxygenating desulfurization under the condition of ultrasonic and microwave.

目前，柴油在燃料油中占的比重越来越大，而柴油较汽油馏分重，其硫化物主要以噻吩及噻吩衍生物的形式存在，这类硫化物用加氢的方法难以脱除，使柴油的含硫量较高，因此柴油的深度脱硫是国内外研究的热点和难点，本文以二苯并噻吩作为模型化合物，考察微生物的协同条件下对柴油的深度脱硫，超声波条件和微波条件下的氧化脱硫，并对超声波条件和微波条件下柴油的深度脱硫进行了对比。

The two catalysts supported on USY zeolites with surface acid amounts of 626 and 203μmol/g, respectively, showed excellent sulfur tolerance, while the catalysts of higher and lower acid amount showed decreased sulfur tolerance. Energy dispersive spectroscopic analysis proved that the support with a large acid amount adsorbed more sulfur, which might lead to the lower sulfur tolerance of the catalyst.

结果表明硫含量为200μg/g时，载体酸量为626和203μmol/g的两个催化剂的耐硫性最好，而载体酸量更低和更高的催化剂的耐硫性较差，表明载体的酸量太大或太小都不利于催化剂的抗硫性。X射线能量散射分析表明，酸量大时S在酸性位吸附很多，这可能导致催化剂中毒。

The results indicated that the total hydrodesulfurization ratio of sulfur-containing compounds of FCC gasoline was 86.3%, sulfide and tetrahydrothiophene were completely conversed, the hydrodesulfurization ratio of mercaptans was 96.6%, the hydrodesulfurization ratio of thiophene was 78.8%, the hydrodesulfurization ratio of alkyl-substituted thiophene was 85.8%, the hydrodesulfurization ratio of benzothiophene was 81.4% The conversed products of 3-methylthiophene were including little sulfur specie, isomerized sulfur specie (2-methylthiophene) and larger sulfur specie (2, 5-dimethylthiophene, 2,4-dimethylthiophene, 2,3-dimethylthiophene).

结果表明FCC汽油硫化物总脱硫率为86.3%，其中，硫醚和四氢噻吩的转化率都达到100%，硫醇硫转化率96.6%，噻吩硫转化率78.8%，烷基噻吩转化率85.8%，苯并噻吩转化率81.4%。3-甲基噻吩在OTA催化剂上的转化产物中含有小分子，异构硫化物（2-甲基噻吩），以及大分子异构硫化物（如2，5-二甲基噻吩、2，4-二甲基噻吩和2，3-二甲基噻吩）。

In order to explore the relationship between structure and properties of hydroxyalkyl cellulose ether nitrate, molecular structures of nitrate ester of hydroxylethyl cellulose ether, nitrate ester of hydroxylpropyl cellulose and nitrate ester of cellulose glycerol ether with molar substitution of 1 were simulated by using Synthia module of Materials Studio, and their performances of nitrogen content, glass transition temperature and Young's modulus were predicted.

为探索羟烷基纤维素醚硝酸酯的结构与性能关系，借助Materials Studio软件中的Synthia模块模拟了摩尔取代度为1的羟乙基纤维素醚硝酸酯、羟丙基纤维素醚硝酸酯和二羟丙氧纤维素醚硝酸酯的结构，并预测了它们的含氮量、玻璃化转变温度和杨氏模量。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。