脱水

"Half-water-hydrolysis"method is used to modify the preaminolysis of phenylenediamine in"step coupling polymerization". First, dehydrochlorination polycondensation between Si-OH and Si-Cl group during polycondensation reaction is employed instead of dehydration reaction between Si-OH groups before, which avoids the disconnection of Si-N bond destreyed by isolated water and improves the H-bonding template effect of the bridged-phenylenediamine.

探索用&半水水解-脱氯化氢缩聚&法对我组过去提出的&全水水解法&的预胺解法加以改进，经&半水水解&得到的含硅羟基和硅氯基的单体再以脱氯化氢代替脱水的方法减少了极性溶剂存在下游离水断裂梯撑模板的硅-氮键的可能性，有效地提高了对苯二胺梯撑中氢键的模板作用。

Four new compounds,substituted-benzyloxyindole-3-formaldehyde-(4′-nitro) phenylhydrazone ,were synthesized by the condensation of 4-nitrophenylhydrazine with substituted-benzyloxyindole-3-formaldehyde in ethanol.

以取代苄氧基吲哚-3-甲醛和4-硝基苯肼为原料，乙醇为溶剂，通过缩合脱水反应合成了4个新化合物——取代苄氧基吲哚-3-甲醛-(4′-硝基)苯腙，其结构经1H NMR，IR，MS和元素分析表征。

This paper reports the study for phosphomolybdic acid H 3[P(Mo 3O 10 4]·xH 2O as catalyst and anhydrous magnesium sulfate as drying agent used in the esterification of hexanoic acid and ethyl alcohol.

报道了以磷钼酸为催化剂，以无水硫酸镁为吸水剂，催化脱水合成己酸乙酯。

Phosphorus and copper resources and techniques advantages are available in Yunnan, providing good conditions to carry out the production of phosphori...

本文在论述磷铜生产原理的基础上，对磷铜生产过程作理论分析，在工业装置上，经过长期试验，采用脱水黄磷为原料，在催化剂下通过感应加热来实现磷铜合成过程，少量逸出磷回收为磷酸，磷铜液粒化为粒状产品，由于合成反应速度快，磷收率高，生产环境好，属清洁化生产工艺，生产过程安全性高。

The results of COS effects on fruits, vegetables, cut flowers, lily bulbs and potted ornamental plants showed that there were no phytotoxic effects of COS on fruits and vegetables under the condition of COS with the dosage of 40g/m^3 and for an exposure time of 2h.

COS熏蒸处理对水果、蔬菜、鲜切花、百合种球和盆栽观赏植物影响的研究表明：用剂量为40g/立方公尺的COS熏蒸2h后，COS对水果、蔬菜不产生药害，对果蔬外观和品质无影响；对植物的花朵无药害，但对植物叶片，特别是兰科、凤梨科等多肉质植物有较大药害，处理后的植物叶片出现脱水现象。

The results indicate that the pillaring process and crystal growing of anatase can be more easily realized by increasing the acid-base ratio of pillaring agents, raising the pillaring temperature and adding proper quantities of alkali. The calcination of Ti-pillared precursor brings the growth of TiO2 grain, at the same time the layer distance is declined. In order to obtain ideal products, the right pillaring conditions are: the acid-base ratio of pillaring agents of 13, pillaring temperature of 65 ℃ and the volume of alkali (2 mol/L) in pillaring liquid of 6 mL.

结果表明：在一定范围内增大柱撑剂酸碱比、提高柱撑温度以及加入适量碱，有利于插层复合反应的进行和锐钛晶型的生长；柱撑前驱物焙烧后TiO2晶粒长大，同时焙烧引起的脱水导致膨润土层间距的下降；为获得较理想的产物，合适的柱化条件为：柱撑剂酸碱比 n n (HNO3)为13、柱撑温度65 ℃和柱撑液加碱量为(2 mol/L NaOH) 6 mL。

Results show that protons are liberated by dehydration or dehydroxylation after calcination at 500℃. These protons disrupt the silicon-oxygen-aluminium bridges where there are Al substitutions in the tetrahedral sheet of the montmorillonite. Some of silicon-oxygen and aluminum-oxygen tetrahedral invert to react with the pillaring agents and yield covalent bonds which firmly fix the pillars to the host clay. The Al-MMT are thermally and hydrothermally stable up to 700℃.

经过500℃高温焙烧后，交联剂经脱水或脱羟基释放出质子攻击蒙脱土四面体层中Si-O-Al四键，硅氧四面体和铝氧四面体发生翻转，与交联剂发生反应生成共价键，形成稳定的层柱黏土材料，在700℃高温下，Al-MMT材料不仅具有较好的热稳定性，而且具有较好的水热稳定性。

Structure of the dehydration product I of pinacol under acidic condition was determine The results show that the dehydration reaction of pinacol gains an advantage over rearrangement reaction.

结果表明，在酸性条件下颇哪醇的脱水反应优于重排反应，由此合成了1，2，4-三苯基环戊二烯。

The results show that the method of drying at initial temperature of 35℃, and increasing temperature at a rate of 5℃/h to 60℃, keeping the temperature at 60℃ for one hour, then decreasing the temperature to 50℃, is favorable for the dehydration and color protection of Pleurotus eryngiu.

研究结果显示，采用始温35℃，以5℃/h的速度升温，至60℃条件下保持1 h，再逐渐降温至50℃的干制方法有利于杏鲍菇的脱水以及色泽的保持。

This paper introduced the method that the thiabendazole was synthesized by polyphosphoric acid as solvent.

介绍多聚磷酸作为 4 羧酸噻唑与邻苯二胺溶剂兼脱水剂，合成噻苯咪唑———食品保鲜剂的方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。