h2so4

Among them , the additive amount of H2SO4 and density of polymer solution play main role .

在诸因素中，硫酸用量和聚合液密度是影响聚合硫酸铁质量的主要因素。

The sample treated by the double glow discharge has good anti-corrosive property to H2SO4 .

经双辉技术处理后的碳钢试样在稀硫酸和富液中的耐腐蚀性能显著提高。

( H2SO4 ) a highly corrosive acid made from sulfur dioxide ; widely used in the chemical industry .

（HSO）一种极具腐蚀性的酸，由二氧化硫制成，广泛用于化学工业中。

The industrial crude fat was obtained by treatment of soybean lecithin with dilute H2SO4 .

大豆油脚经稀硫酸预处理得工业酸油。

Effect of Hydrogen Sulfide on the Inhibition Action of Propargyl Alcohol in Fe / H2SO4 System

H2S对丙炔醇在Fe/H2SO4体系中缓蚀作用的影响

The sulfite oxidation process under acid condition to treat concentrated H2SO4 bearing wastewater from pharmaceutical production is described .

讨论了利用亚硫酸盐做氧化剂，在酸性条件下氧化处理制药厂的高浓度含硫废水。

To some extent , a given concentration of H2SO4 were active to shed seed villus .

一定浓度的浓H2SO4对花卉种子具有脱绒效果。

Sulfate : Any of numerous inorganic and organic chemical compounds related to sulfuric acid ( H2SO4 ) .

硫酸盐；硫酸酯：任何与硫酸（H2SO4）有关的化合物。

The concentration of acid mist in every year didn 't exceed the national standard except for that of H2SO4 in2001 ;

结果除H2SO4的2001年平均浓度超过国家标准外，其余各年度的各种酸雾均未超过国家标准；

The sulfonated oil coke was prepared from oil coke by sulfonation with H2SO4 as sulfonation agent .

以石油焦为原料、浓硫酸为磺化剂，通过磺化反应制得磺化石油焦酸催化剂。

The electrochemical behavior of the methanol oxidation on the platinum electrode with different concentration H2SO4 solution was studied by using cyclic voltammetry .

用循环伏安法研究在不同酸度的硫酸钠溶液中，甲醇在铂电极上氧化的电化学行为。

The composition and structure of porous alumina films formed in H2SO4 solution by AC and DC anodizing have been investigated separately .

对硫酸溶液中交、直流氧化铝多孔膜的组成及结构进行了研究。

The temperature difference between the two ends of the anodizing bath caused by improper way of bath circulation and H2SO4 addition was analysed .

分析了阳极氧化槽中因循环方式和添加新硫酸不合理造成槽内两端温度差异。

The experiment of extracting iron from pyrite cinder by using H2SO4 solution and solvent dissolution enhancement is carried out at normal atmospheric pressure .

采用常压下助溶酸浸的方法对提取硫铁矿烧渣中的铁进行了研究，得到硫铁矿烧渣中铁浸出率的影响因素及规律。

Crude D-isoascorbic acid was got by acidification of crude sodium D-isoascorbate in methanol with H2SO4 .

以D-异抗坏血酸钠粗品为起始原料，采用在甲醇溶液中H2SO4酸化的方法，制得了D-异抗坏血酸粗品。

Method : To extract their content by ultrasonic method , colour them with anthrone ( - H2SO4 ) and determine them by ultraviolet spectrophotometry .

方法：采用超声法提取，以0.2%蒽酮-H2SO4显色，紫外分光光度法测定多糖含量。

The hydrolysis by H2SO4 and TFA under different hydrolysis conditions was compared to analyze their influence on the measurement of insoluble yeast glucan content .

分别比较H2SO4和TFA在不同条件下水解酵母不溶性葡聚糖对测定结果的影响。

The hydrogen induced cracking ( HIC ) of X70 pipeline steel was studied in H2SO4 solutions with different concentrations by means of electrochemical charging .

采用电化学充氢的方法研究了X70管线钢在不同浓度硫酸溶液中的氢致开裂（HIC）行为。

Isopropenyl acetate was synthesized from ketene and acetone by direct esterification using strong acidic cation-exchange resin to substitute H2SO4 as catalyst .

以乙烯酮和丙酮为原料，用强酸性离子交换树脂代替浓硫酸作为催化剂，直接酯化合成乙酰丙酮的中间体乙酸异丙烯酯。

A spectrophotometric method has been developed for the determination of Ir , based on their catalytic effect on potassium periodate oxidation of dibromo-nitro-chlorphosphonazo in H2SO4 medium .

在硫酸介质中铱对高碘酸钾氧化二溴硝基偶氮氯膦的褪色反应有明显的催化作用。

But in 5 % H2SO4 aqueous solution and 10 % NaOH aqueous solution , hydrolysis with different degree was founded . And the hydrolysis was different with environmental temperature .

而在5%H2SO4和10%NaOH水溶液中，除了上述物理老化外，复合材料还不同程度地发生了水解反应，且温度不同水解程度不同。

It has been found that ammonium ferric sulfate dodecahyrate was superior to H2SO4 when used as catalyst for esterification of isobutanol with acetic acid .

十二水合硫酸铁铵作为乙酸和异丁醇的酯化催化剂，性能优于硫酸。

After still separation , aggregation condensation by heating and extraction , the regenerative acid will turn into diluted H2SO4 of60 % , pink transparent , and acid tar .

对再生酸经过静止分离、加热聚合浓缩、萃取等工艺净化处理后，可得到粉红色透明酸度为60%的稀硫酸和酸焦油。

The results show that , in 80 % H2SO4 , the Corrosion rate with the increase of the content of Cu decreased , when the content of Cu exceeds 3.2 % , alloy corrosion rate increase .

研究表明，在80%硫酸中，腐蚀速率随Cu含量的增加而减小，当合金中Cu含量超过3.2%时，合金的腐蚀速率增加。

Using waste from recycling the NdFeB scrap and iron scale as raw materials , immersing it by H2SO4 and purifying , the purified liquid of Fe2 + was obtained .

采用钕铁硼废料处理废渣、铁屑等为原料，通过H2SO4浸出、除杂后得净化液。

Xylan was extracted from corncob in the condition of 160 ℃ and 1.5 hours after corncob was treated with 0.1 % H2SO4 at 60 ℃ .

确定了从玉米芯提取木聚糖提取过程：玉米芯经0.1%硫酸60℃浸泡处理后于160℃蒸煮1.5小时。

Effects of Nb surface alloying on corrosion behavior of Ti6Al4V ( TC4 ) in H2SO4 、 HCl 、 NaCl solutions were investigated by immersion test and electrochemical technigues respectively .

采用失重法和电化学扫描法研究了等离子表面合金化技术在Ti6Al4V（TC4）合金表面形成的Ti-Nb合金层及基体材料的腐蚀行为，分析了Nb的渗入对Ti6Al4V耐蚀性的影响。

The copolymers show good solubility in N , N-dimethylformamide ( DMF ), dimethyl sulphoxide ( DMSO ), N-methyl-2-pyrrolidone ( NMP ) and some inorganic acids like H2SO4 .

共聚物在N，N-二甲基酰胺（DMF）、二甲基亚砜（DMSO）、N-甲基-2-吡咯烷酮（NMP）等极性溶剂和浓H2SO4中有良好的溶解性。

To treat tetramethyl ammonium chloride with H2SO4 in organic solvent , a precipitate is produced . A white crystallizing solid TMAHS is prepared after filtrating , washing and drying .

以H2SO4处理四甲基氯化铵的有机溶液，立即生成沉淀，经过滤、洗涤、干燥后，得到白色结晶状固体&TMAHS。

Through the analysis of TG-DSC curve , we studied the influence of temperature and the additives ( H2SO4 , HCL , NaOH , H2O2 , H3PO4 ) on the performance of bamboo thermal decomposition .

通过TG-DSC曲线分析，研究了温度和H2O2、H2SO4、H3PO4、HCL、NaOH等添加剂对毛竹材热解性能的影响。