查询词典 benzene-para-dicarboxylic acid

The additional activity of the mechanical mixture can be ascribed to the acid sites on dealuminated Y zeolite, where the activated hydrogen spilt over from the neighboring Pt sites could hydrogenate the adsorbed benzene with the formation of cyclohexane and methylcycloheptane.

发现虽然Y沸石本身没有加氢活性，但它的加入可以显著提高Pt/Al2O3的活性，因为在Pt中心上得到活化的氢可以快速溢流到邻近的沸石颗粒表面的酸中心上，并和吸附在其上的苯发生加氢反应生成环己烷和甲基环戊烷。

The main source of benzene in the presence of a catalyst oxidation to form maleic acid, and then derived by isomerization.

其主要来源是在催化剂存在下将苯氧化生成顺丁烯二酸，再经异构化而得。

Immunosuppressant: such as azathioprine, cyclosporine A, leflunomide, benzene acid, such as nitrogen mustard.

免疫抑制剂：如硫唑嘌呤、环孢菌素A、来氟米特、苯丁酸氮芥等。

With polyoxyethylene nonyl phenol ethers (OP-10) as emulsifier and dodecyl benzene sulfonic acid as catalyst, hydroxy organosilicon microemulsion was prepared through octamethylcyclotetrasiloxane (D4) open-ring polymerization under certain conditions.

以壬基酚聚氧乙烯醚(OR-10)作乳化剂，十二烷基苯磺酸为催化剂，通过八甲基环四硅氧烷(D4)开环聚合，在一定条件下合成了端在基聚二甲基硅氧烷微乳液。

Different modifier s such as stearic acid,titanate coupling agent,sodium dodecyl benzene sulfonate and phosphorate are applied to improve the surface activity of ground calcium carbonate powder.

通过对改性效果分析，讨论各改性剂的改性特点及最佳配比，寻找碳酸钙的改性最佳工艺。

Actually, Super zinc no toxic ,no harmful itself ,no prussic acid ,benzene ,toluene , ketone, and some other affecting component ,lower voc, no rubbish will happened after using, so this can be more friendly to the environment .

强力锌本身无毒无害，不含异氰酸物、苯、甲苯、酮、氯代烃等不良组份。低VOC，施工不产生液体、固体废弃物，是对环境更友好的锌防护产品。

It is based on the facts that in the presence of sulfuric acid and sodium dodecyl benzene sulfonate, vanadium activated by vitamin C can catalyze potassium bromate to oxidize safranine O, the oxidation products of safranine O can emit intense and stable fluorescence on nitrocellulose membrane.

基于在硫酸介质和十二烷基苯磺酸钠存在下，抗坏血酸活化钒催化溴酸钾氧化番红花红O发射强而稳定的荧光的特性，建立了ⅤC活化溴酸钾氧化番红花红O催化荧光法测定痕量钒的新方法。

Eight novel N,N′-naphthalene acyl substituted aromatic acylamino thiocarbamide s(Ⅱ1~Ⅱ8) were synthesized from aryl acylhydrazine and α-naphthalene acyl isothiocyanate, which was obtained by the reaction of potassium thiocyanate with α-naphthalene acyl chloride obtained from 2-naphthylacetic acid and thionyl chloride in anhydrous benzene.

通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯，与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯，再与芳基酰肼进行加成反应，合成8种新型N，N′-萘乙酰基取代芳乙酰胺基硫脲类化合物(Ⅱ1～Ⅱ8)。

A novel compound——N-naphthalene acylN′-substituted p-chlorobenzamido thiocarbamide was synthesized by reaction of p-chlorobenzamido hydrazine and α-naphthalene acyl mustard oil,which was obtained by potassium thiocyanate combined with α-naphthalene acyl chloride formed from α-naphthylacetic acid and SOCl2 in anhydrous benzene.

通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯，然后与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯，再与对氯苯甲酰肼进行加成反应，合成了新型化合物N-萘乙酰基-N′-对氯苯甲酰氨基硫脲，用薄层色谱法跟踪最后一步反应，确定了反应时间。

Naphthalene acetyl chloride was prepared firstly by the reaction between α-naphthylacetic acid and SOCl2 in anhydrous benzene,then reacted with potassium thiocyanate to obtain α-naphthalene acetyl isosulfocyanate,as taking an addition reaction with p-chloro benzoyl hydrazine the novel compound N-naphthalene acetyl-N'-p-chloro benzoylamino thiocarbamide was finally synthesized.

通过α-萘乙酸和SOC l2在无水苯中反应制得α-萘乙酰氯，然后与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯，再与对氯苯甲酰肼进行加成反应，生成新型化合物N-萘乙酰基-N'-对氯苯甲酰氨基硫脲。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。