氢化

These methods include hydrogenation in high-pressure,reduction by hydroborates and reduction by dithionite. This article studied these methods, especially optimized the technology of hydrogenation in normal pressure and reduction by hydroborates.

研究了常压氢化法、加压氢化法、硼氢化物还原法及连二亚硫酸钠还原法等制备四氢叶酸，并优化了常压氢化法、硼氢化物还原法的工艺条件。

To prepare THFA from folic acid , catalytic hydrogenation and high-pressure hydrogenation, reduction by borohydride and reduction by dithionite were investigated. Especially, the technology of catalytic hydrogenation and reduction by borohydride were optimized.

本文研究了常压氢化法、加压氢化法、硼氢化物还原法及连二亚硫酸钠还原法制备四氢叶酸，并优化了常压氢化法、硼氢化物还原法的工艺条件。

Pressing has to be repeated thrice, in order to get rid of the unsaturated acids, otherwise the quality will be inferior This new method is to use soy bean oil or cotton seed oil and Chinese vegetable tallow singly or together as raw materials.

本研究系采用豆油或棉子油与桕油分别或混合进行极度氢化后水解，蒸馏即获得质量高的硬脂酸。以含水0.1％以下酸价0.5以下的精炼棉子油与桕油，用0.2—0.25％的镍催化剂，在表压5—10公斤，温度180—200℃情况下，在有良好搅拌的氢化罐内进行氢化，3小时以内即可达到极度氢化。

Based on the market demands,the trend of pine chemicals'developmet and our own foundation of technology and economy,we developed this series products, includ hydrogenated rosin、high-hydrogenated rosin、water-white hydrogenated rosin、water-white rosin、glycerol ester of hydrogenated rosin、pentaerythritol ester of hydrogenated rosin、methanol ester of hydrogenated rosin etc.

本公司基于市场需求、国内外发展趋势以及自身的技术和经济基础，开发了氢化松香系列产品，包括氢化松香、高度氢化松香、水白氢化松香、水白松香、氢化松香甘油酯、氢化松香季戊四醇酯、食品级氢化松香甘油酯、氢化松香甲酯等。

Acridone 1 reacted with benzyl chlorides 2 in NaH/DMF/KI to give 10-benzyl-9-acridones 3 in high yields. Subsequent reduction of 3 with NaBH4 gave 10-benzy1-9,10-dihydroacridine derivatives 4 with yields of 88%～96%.

吖啶酮1与氯化苄及其衍生物2在氢化钠/N，N-二甲基甲酰胺/碘化钾中反应高产率生成10-苄基吖啶酮类化合物3； 3经硼氢化钠氢化还原生成10-苄基-9，10-二氢吖啶类化合物4，产率88%～96%。

The lumped kinetic model of monoterpene, abietic type resin acid, pimaric acid type resin acid, p-cymene, hydro-monoterpene, dehydro-abietic acid, hydro-abietic type resin acid, and hydro-pimaric acid type resin acid was established based on the structural groups and approximate reaction kinetic theory according to the fundamental principles of the lumped method.

在消除内、外扩散影响的条件下，在线跟踪反应产物并用气相色谱法测定反应体系组成随时间的变化，构造了Pd／C催化剂上松脂分子间氢转移集总反应网络，建立了包含单萜烯、枞酸型树脂酸、海松酸型树脂酸、对伞花烃、氢化单萜烯、脱氢枞酸、氢化枞酸型树脂酸和氢化海松酸型树脂酸等复杂反应体系的集总动力学模型，并估算了模型参数。

Using hydrotreated gas oil as solvent, under the conditions of a reaction temperature of 400 C, a hydrogen partial pressure of 10 MPa and a reaction time of 1 h, a portion of coke deposits could be removed yet without the function of hydrogenating coke.

采用溶剂萃取法除去工业失活催化剂上沉积的焦炭和金属的研究结果表明，用四氢呋喃、吡啶和喹啉这3种含杂原子的有机强溶剂常温萃取催化剂，其去除焦炭能力很弱，而且会因这些溶剂的强吸附作用污染催化剂；盐酸洗涤能有效去除催化剂表面的钙、铁沉积层，但不能去除焦炭；低芳香性的加氢瓦斯油在400 C、H2压力为10MPa、反应1h的条件下可部分去除催化剂上的焦炭，但不具备强的氢化焦炭作用；1，2，3，4-四氢化萘因具有供给原子氢的能力，可以有效地氢化和去除催化剂上的焦炭。

The result of potassium malonyloxyborohydride as a new hydroboration reagent reacts with terminal alkenes and alkynes is described.

介绍新的硼氢化试剂丙二酰氧基硼氢化钾与链端烯炔烃的作用，烯烃的硼氢化物在PTC条件下，插入∶CCl2 ，可得饱和羧酸；炔烃则难以与之硼氢化。

In the preparation method, primary soybean oil and deep hydrogenation soybean oil, or primary rapeseed oil and deep hydrogenation rapeseed oil are adopted as raw materials; sodium methoxide is selected as a catalyst; the consumption of the catalyst is 0.1 percent to 0.5 percent; the reaction temperature is 70 DEG C to 110 DEG C; therefore, the primary soybean oil and the deep hydrogenation soybean oil, or the primary rapeseed oil and the deep hydrogenation rapeseed oil have randomized lactide reaction for 10 min to 90 min, so as to change the composition of mixed oil triglyceride and obtain the low/zero trans fatty acid base oil with different melting points and the characteristics of solid fat.

本发明以一级大豆油和极度氢化大豆油，或一级菜籽油和极度氢化菜籽油为原料，选择甲醇钠为催化剂，催化剂用量0.1％～0.5％，反应温度70～110℃，使一级大豆油和极度氢化大豆油，或一级菜籽油和极度氢化菜籽油之间进行随机交酯化反应，反应时间10～90min，从而改变混合油甘三酯组成，得到具有不同熔点和固体脂肪特征的低/零反式脂肪酸基料油。

Malonyloxyborohydride,a hydroboration reagent,is prepared by reaction of malonic acid and sodium borohydride,and is used to react with dihydromyrcene in THF.

用一种硼氢化试剂———丙二酸与硼氢化钠反应生成的丙二酰氧基硼氢化钠在THF中与二氢月桂烯反应制备香茅醇。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。