查询词典 negative catalyst

At the same time, with reference to the conditions of synthesis of methyl ester of salicylic acid, we combined ethyl ester of salicylic acid, salicylic acid-n-butyl, isobutyl salicylate, amyl salicylate, isoamyl salicylate and salicylic acid benzyl ester,besides, experimented the possibility for series of ester synthesis catalyst with Sodium bisulfate as a catalyst .

同时参照水杨酸甲酯的合成条件合成了水杨酸乙酯、水杨酸丁酯、水杨酸异丁酯、水杨酸戊酯、水杨酸异戊酯和水杨酸苄酯，实验了以硫酸氢钠为催化剂合成系列酯的可能性。

The properties are also studied, which testified that firm load technology for metallic substrate catalyst has a board foreground in automobile catalyst application.

研究证明本论文研究的以金属表面预处理为主体的涂层牢固负载技术，能够广泛应用于各种类型的机动车尾气催化净化剂中。

The results show that the reaction can be completed in shorter time and lower temperature while PEG is used as the phase transfer catalyst. The dropping point of product can reach about 165℃, this proves that the method of using PEG as phase transfer catalyst to produce rice bran wax calcium soap is effective.

试验结果表明采用PEG相转移催化制糠蜡钙皂可使反应在较短的时间和较低的温度下进行完全，并可使产品的主要指标滴点达到165℃左右，证明PEG相转移催化法是制糠蜡钙皂的有效方法。

Ferric nitrate and cupric nitrate can catalyze carbonization process. It is discovered that the catalyst dispersion on alkaline surface is poor through catalyst adsorption study.

对单元催化炭化过程的研究发现，铁、铜的硝酸盐对炭化过程有催化作用，能够减缓炭化过程中挥发份的最大析出速度，有利于各向同性炭前驱体的形成。

Anode catalyst, La0.75Sr0.25Cr0.5Fe0.5O3-δ, was synthesized to construct H2S fuel cell by urea combustion method. The catalyst LSCrF was selected to carry out the polarization test.

摘 要：采用尿素-硝酸盐燃烧法制备钙钛矿阳极催化剂La0.75Sr0.25Cr0.5Fe0.5O3-δ，并将其用于以H2S为燃料气的固体氧化物燃料电池中。

Jatropha Curcas oil was used as feedstock for producing biodiesel by transesterification,and adding sodium hydroxide,potassium hydroxide or sodium methoxide as catalyst respectively. The optimal conditions were obtained:molar ratio of methanol to oil 6∶1,reaction temperature 60 ℃,reaction time 80 min,mixing intensity 600 r/min,catalyst concentration for NaOH,KOH,or CH3ONa 1.2% of oil weight,The yield of biodiesel was above 97%. The physico-chemical indices of the biodiesel obtained met the quality standard ASTM of USA and DIN V of Germany.

选用了非食用油麻疯果油为原料，以氢氧化钠、氢氧化钾、甲醇钠为催化剂，通过酯交换法制取生物柴油，研究表明最适宜工艺条件为：醇油比6∶1，反应温度60 ℃，反应时间80 min，搅拌强度为600 r/min，催化剂用量为1.2%，转化率达到97%以上，且生物柴油各项理化指标均符合美国和德国测试标准。

In this paper, performances of diamond synthesized respectively with powder catalyst and with compact catalyst were compared.

比较了片状触媒和粉状触媒合成金刚石的性能，并从触媒材料的制备工艺及合成体系方面分析了造成性能差异的原因。

Effects of the preparation methods of the catalyst, the physical and chemical properties of the alumina support, and the competitive absorbents for catalyst preparation were investigated.

考察了催化剂的制备方法、Al2O3载体物性、催化剂制备时竞争吸附剂对催化剂性能的影响。

Important compounds include alums; alumina, useful as corundum and as a carrier for many catalyst s; aluminum chloride, a widely used catalyst for organic syntheses; and aluminum hydroxide, used to waterproof fabrics.

重要的化合物包括了：明矾；氧化铝，可用作各种化学反应催化剂的载体；氯化铝，广泛用来制备各种各样的有机化合物；氢氧化铝，用于制造防水织物。

The method of preparation is: the laminate is the catalyst carrier, the active ingredient of the catalyst carrier between the layers forms the catalyser, creates carbon nanometer pipe array between the layers by the precess of caemical vapor deposition, gets the carbon nanometer pipe array / laminate compounds.

其制备方法是以层状材料为催化剂载体，在其片层之间负载催化剂活性组分形成催化剂，通过化学气相沉积过程，在片层之间生长碳纳米管阵列，获得碳纳米管阵列/层状材料复合物。

In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.

Aelia 是高举他自己，并在此城内朝拜罗马诸神。

The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.

泥炭积累的持续性质的手段，陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时，相当于浅海阶层，从而使确定的高频周期，不记录在themarine 阶层。