查询词典 methanol

Through experiment, UASB+SBR combined process was employed at ambient temperatures to treat the methylamine and methanol wastewater from a chemical plant in Fei City of Shandong.

本文通过试验，研究了在常温条件下采用UASB+SBR工艺处理山东肥城某化工厂的甲胺、甲醇生产废水。

A process for preparation of the potassium methylate with the potassium-mercury amalgam and methanol using Fe/C as catalyst was provided.

本文主要研究了甲醇与钾汞齐在铁/碳催化剂作用下合成甲醇钾的工艺。

Due to the ability of the bivalent magnesium cation to form stable chelate complexes with carbonyl compounds,magnesium methylate for example is used as a selective carbonyl condensing agent. Three synthesis routes was proposed based on literatures and comprehensive comparison with other ways. First,Magnesium methylate is prepared by reacting magnesium metal with dry methanol.The magnesium salts of"higher"primary alcohols,i.e.alcohols with ≥ 2 carbon atoms,do not react directly with pure alcohols under normal conditions.In fact catalysts are required to set the reaction in motion and the preparation is performed under pressure at the higher temperatures.

一、直接合成法：本文将镁与无水甲醇直接反应制得甲醇镁；"更高级"的醇（比如C≥ 2的醇）在无催化剂的条件下无法直接和镁进行反应，本文以CCl4为催化剂将无水乙醇与镁直接反应制得乙醇镁，但是以原甲酸三乙酯为催化剂无水乙醇与镁无法反应；不论是以CCl4为催化剂还是以原甲酸三乙酯为催化剂，丙醇均无法与镁直接反应。

Magnesium methylate can be prepared by reacting magnesium with dry methanol; Primary alcoholates can be prepared by alcoholysis; the sterically demanding substituted magnesium alcoholates can be prepared by ester exchange or from dialkylmagnesiums.

综上所述，几乎所有的醇镁化合物都可以通过这三种方法进行制备：甲醇镁通过直接合成法制备；伯醇镁通过醇解法制备；仲醇镁或叔醇镁通过酯交换或烷基镁法制备。

Due to the ability of the bivalent magnesium cation to form stable chelate complexes with carbonyl compounds,magnesium methylate for example is used as a selective carbonyl condensing agent.Three synthesis routes was proposed based on literatures and comprehensive comparison with other ways.First,Magnesium methylate is prepared by reacting magnesium metal with dry methanol.The magnesium salts of higherprimary alcohols,i.e.alcohols with ≥ 2 carbon atoms,do not react directly with pure alcohols under normal conditions.In fact catalysts are required to set the reaction in motion and the preparation is performed under pressure at the higher temperatures.

一、直接合成法：本文将镁与无水甲醇直接反应制得甲醇镁；"更高级"的醇(比如C≥2的醇)在无催化剂的条件下无法直接和镁进行反应，本文以CCl_4为催化剂将无水乙醇与镁直接反应制得乙醇镁，但是以原甲酸三乙酯为催化剂无水乙醇与镁无法反应；不论是以CCl_4为催化剂还是以原甲酸三乙酯为催化剂，丙醇均无法与镁直接反应。

The cis-9, trans-11-CLA was extracted with hexane-isopropanol,methylated with methanol-sodium methylate and cis-9,trans-11-CLA was separated and quantified using gas chromatography.

样品经正己烷-异丙醇提取、甲醇-甲醇钠甲酯化后，进行气相色谱分析；采用程序升温，以保留时间定性，外标法定量。

Alkylation of methylnaphthalene and methanol over HZSM-5 zeolite can make 2, 6-dimethylnaphthalene (2, 6-DMN) and the product stream contains isomers of 2, 6-DMN and unreacted MN, which requires efficient separation.

以甲基萘和甲醇为原料，采用HZSM-5烷基化催化剂制取2，6-二甲基萘(2，6-DMN)。由于产物中含有2，6-DMN的异构体以及未反应的MN，需对反应产物进行有效分离。

At each fixed solvent composition,the mean activity coefficients of KI decrease at first and then increase with KI molality increases.At each fixed KI molality,the activity coefficients decrease with an increase of methanol in solvent mixtures.

目前文献报道较多的是单一电解质在混合溶剂中活度系数的测定[2-5]以及混合电解质体系活度系数的测定[6-9]，但KI在甲醇-水混合溶剂中的活度系数测定尚未见报道。

The molecular radius and molar volume in gas, the dipole moment in gas, water and methanol, the sum of negative Mülliken charges and the frontier molecular orbital were also calculated at the same level.

在气相条件下计算了分子的半径及分子的体积，并在气相、水和甲醇介质中计算了分子的偶极矩、分子中原子的Mülliken电荷、分子的前线轨道。

ConclusionThe methanol extract of the leaf of L. rethenicum Murr shows good scavenging effect on DPPH.,.OH and .O.

结论黑果枸杞叶片甲醇提取物对DPPH·，·OH和O·- 2自由基均具有较好的清除作用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。