查询词典 C1.
- 与 C1. 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Methane chlorination is the earliest production method to put industrializes methane chloridate into realization, and the technology is mature.
此外,还有二硫化碳氯化法生产四氯化碳、C1一C3废氯烃全氯化法生产四氯化碳并联产四氯乙烯以及氯油法或乙醛法生产氯仿等。
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Methane chloridate is a kind of chemical product including monochloro methane, dichloro methane, trifluoro methane, tetrachloromethane.
项目内容:甲烷氯化物是包括一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳四种C1氯烃氯产品的总称,是氯碱工业后加工的一个重要有机耗氯产品。
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The preparation method is characterized in that:(1) at minus 10 DEG C to 10 DEG C, a chloroauric acid solution with a certain concentration is added into a nano-Pt/C catalyst by ultrasonic or stirring mixture and the atomic ratio of Pt to Au is controlled between 18:1 and 5:1;(2) a small amount of monohydric alcohol or dihydric alcohol or trihydric alcohol of C1-C3 is added and is stirred at minus 10 DEG C to 10 DEG C for 10 min to 5h, so as to prepare the carbon-loading Pt-Au bimetallic nano electro-catalyst;(3) if necessary, the catalyst obtained by the step (2) is treated for 0.5 to 4h at high temperature ranging from 100 DEG C to 700 DEG C in the inert or reducing atmosphere, so as to adjust and control the grain size of the Pt-Au bimetallic nano electro-catalyst.
本发明涉及了一种高稳定性碳载Pt-Au双金属纳米电催化剂的制备方法,其特征在于:(1)在-10~10℃中,将一定浓度氯金酸溶液加入到纳米Pt/C催化剂中经超声或搅拌混合,控制Pt∶Au的原子比为18∶1-5∶1;(2)添加少量C 1 -C 3 的一元、二元或三元醇类,在-10~10℃下搅拌10min-5h,制备了碳载铂金双金属纳米电催化剂;(3)视需要,可将步骤(2)得到的催化剂在惰性气氛或还原气氛中经100~700℃高温处理0.5-4h,可调控Pt-Au/C双金属纳米催化剂的粒径。
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H-Tyr-OH was then react with fluorenylmethyl chloroformate in dioxane or THF to give N-Fluorenylmethoxycarbonyl-O-benzyltyosine Fmoc-Tyr(Bzl-OH in 98% yield.
酪氨酸苄醚与芴甲氧羰基氯(Fmoc-C1)反应,成功地在氨基上导入了芴甲氧羰基保护基,反应在二氧六环或四氢呋喃中进行,产率达到98%。
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The major products were methane, ethylene, propylene, butylene, butadiene, cyclopentadiene, benzene, toluene, styrene, vinyl-substituted cyclopentene derivatives and C5/C6 isomers pentadiene, met...
热裂解主要产物为甲烷、乙烯、丙烯、丁烯、丁二烯、环戊二烯、苯、甲苯、苯乙烯、环戊烯的乙烯基取代物及C5,C6异构体(戊二烯、环戊烯的甲基取代物、环己烯、己二烯和环戊二烯甲基取代物),其中,C1~C4、环戊二烯、苯、甲苯、乙烯基取代环戊烯为初始产物。
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The use of carbon monoxide from coal or natural gas to produce dialkyl oxalate is an important research area in C1 chemical technology. The chemical reactions and performance in the coupling reaction system for synthesis of diethyl oxalate from carbon monoxide and ethyl nitrite were tested in the presence of hydrogen under the typical coupling reaction conditions.
摘 要:实验研究了在氢气存在下,一氧化碳与亚硝酸乙酯偶联合成草酸二乙酯反应体系在典型操作条件下的化学反应和反应性能,结果表明氢气只与反应体系中的亚硝酸乙酯反应生成乙醇。
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The relaxation modulus, the relaxation time spectra and the structure parameters C 1 and C 2 in the WLF equation were derived from the dynamic mechanical temperature spectra of the cationic dyeable PET fibres after heat setting.
对热处理的阳离子可染改性涤纶测得的动态力学温度谱,求得松弛模量,应力松弛谱以及WLF方程中的结构常数C1和C2,分析了试样超分子结构的变化,说明了热处理工艺改善纤维可染性的机理。
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A method for the separation and determination of Pueraria lobata isoflavonoid extract by reversed-phase high performance liquid chromatography was proposed.
采用反相高效液相色谱法,在C1 8柱上以甲醇水为流动相进行梯度洗脱,在 0~ 1 0min内将葛根黄酮提取物进行分离,并在 2 5 0nm检测,采用标准加入法对实际样品中的葛根素含量进行了分析。
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This work solves the assignments of uncertain C3 and C1��� NMR signals in the previous literature and will be helpful to study the structures of this kind of new isoflavone compounds by 2D NMR spectroscopy and bioactive compounds in puerarin lobate directly by diffusion2chemical shift 2D NMR.
这些工作有助于利用二维核磁共振技术研究和确定含季碳较多的异黄酮类新化合物的结构和利用扩散相关的核磁共振新技术研究葛根的生理活性成份与靶分子相互作用。
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Random primers was used to screen main dominance fungus strain of Chiese Melampsora larici-populina Kleb by RAPD technique and the special RAPD fragments of physiological laces of C1, C3, C4 and C5 were founded successfully.
以156条随机引物,对目前中国落叶松杨栅锈菌(Melampsora larici-populina Kleb)的主要优势菌系进行了BAPD片段的筛选,寻找到了1号、3号、4号、5号4个流行生理小种的特异性RAPD标记。
- 推荐网络例句
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But we don't care about Battlegrounds.
但我们并不在乎沙场中的显露。
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Ah! don't mention it, the butcher's shop is a horror.
啊!不用提了。提到肉,真是糟透了。
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Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.
Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。