查询词典 sulfur alcohol

The process comprises the subsequent steps a through e: a reacting phthalic anhydride with fluorobenzene or a derivative thereof in appropriate reaction conditions; b over reducing the product obtained in step a at the ketone moiety; c reducing the product obtained in step b with sodium dihydro-bis (2- 15 methoxyethoxy) aluminate to the corresponding alcohol ; d chlorinat ing the alcohol obtained in step c ; e inserting CO into the product obtained in step d through an appropriate Pd-containing catalytic system.

该方法包括以下步骤a～e：a使邻苯二甲酸酐与氟苯或者其衍生物在适当的反应条件中反应；b完全还原步骤a中获得的产品的酮部分；c用二氢-二(2-甲氧基乙氧基)铝酸钠将步骤b中获得的产品还原成相应的醇；d对步骤c中获得的醇进行氯化；e通过适当的含Pd的催化剂体系，将CO插入到步骤d中获得的产品中。

Two skeleton nickel catalyst s A and B were prepared at 50 ℃ and 90 ℃ respectively and hydrogenation of furfuryl alcohol to tetrahydrofurfuryl alcohol was studied with the catalysts under different reaction conditions.

在中温和高温下制备了两种骨架镍催化剂 A和B，研究了不同的反应条件对两种骨架镍催化剂的影响，确定了最佳反应条件。

Two skeleton nickel catalysts A and B were prepared at 50 ℃ and 90 ℃ respectively and hydrogenation of furfuryl alcohol to tetrahydrofurfuryl alcohol was studied with the catalysts under different reaction conditions.

研究了以骨架镍为加氢催化剂，以糠醇为原料制备四氢糠醇。在中温和高温下制备了两种骨架镍催化剂A和B，研究了不同的反应条件对两种骨架镍催化剂的影响，确定了最佳反应条件。

It is characterized in that: it uses furfuryl alcohol as raw material, via catalyst to polymerize the poly-furfuryl alcohol to be plated on porous support to form a coat; than drying can carbonizing to prepare compound carbon film.

其特征在于以是以糠醇为原料，在催化剂的作用下聚合成聚糠醇后直接在多孔支撑体上涂覆成膜，经干燥、炭化制备出复合炭膜。

Furfuryl alcohol ; hydrogenation ; skeleton nickel catalyst ; tetrahydrofurfuryl alcohol

糠醇；加氢；骨架镍催化剂；四氢糠醇

Tetrahydrofurfuryl alcohol was prepared from furfuryl alcohol with hydrogenation reduction by using the catalyst at 393-413 K,0.25-0.4 h-1 and 2.0-4.0 MPa.

在393～413 K、0.25～0.4 h\+\{-1\}、2.0～4.0 MPa条件下，用上述催化剂加氢还原糠醇制备四氢糠醇。

The investigation of variation of fatty acids composition during fermentation indicated that the molar percent of unsaturated octadecyl acids increased and unsaturated eicosyl acids decreased when n-propyl alcohol was presented, the molar percent of saturated pentacosyl acid, hexadecyl acid, heptadecyl acid, eicosyl acid and docosyl acid were not sensitive to the addition of n-propyl alcohol.

饱和的十五、十六、二十二、十七和二十酸组分含量不受正丙醇添加的影响。

The obtained CBC was further reacted with stearic acid at 140℃ and hexadecyl alcohol at 180℃ in turn to form citric acid-beta-butylene glycol-citric acidstearic acid-hexadecyl alcohol claw large molecule.

以1，3-丁二醇、柠檬酸为原料，设计、合成了以1，3-丁二醇为核心的柠檬酸－1，3-丁二醇－柠檬酸爪状物小分子；再用酯化反应依次与带有功能化集团的硬酯酸、十六醇接枝合成了多元酯类爪形大分子柠檬酸－1，3-丁二醇－柠檬酸－硬酯酸－十六醇。

The contents of the method are as follows: addition of entainer such as benzene, hexahydrobenzene and pentene etc, rectification make entainer, alcohol and water form ternary boiling material, then boiling point difference formed and high purity alcohol finally produced.

采用向酒精溶液添加夹带剂进行精馏，使夹带剂、乙醇、水形成三元共沸物，造成沸点差，从而精馏出纯度高的酒精。

The invention relates to a synthesis method of N-acetylaminoglucose, which comprises dissolving D-glucosamine hydrochlorate and alcohol at the mass ratio of 2-2.5:100, adjusting the pH value of the solution to 9-10, filtering, taking the filter liquor, mixing and adding acetic anhydride at the 50-60wt% amount of D-glucosamine hydrochlorate, mixing and reacting for 2h, using absolute ethyl alcohol to recrystallizing, filtering and recrystallizing via water, to obtain rod-shape food grade N-acetylaminoglucose.

本发明涉及一种N-乙酰氨基葡萄糖的合成方法。该方法的具体步骤为：将D-葡萄糖胺盐酸盐和乙醇按2～2.5∶100的质量比溶于水中，调节该溶液的pH值为9～10；过滤，取滤液，搅拌下加入乙酸酐，其加入量为原料D-葡萄糖胺盐酸盐量的50～60wt％；搅拌反应2小时后，用无水乙醇进行重结晶；过滤，晶体再用水重结晶，得棒状食品级N-乙酰氨基葡萄糖。

In other research, chondroitin is being investigated for use in several other conditions.

在其它研究，软骨素被调查用於几个其它情况。

They would make fun of him for having to work.

他们拿他的工作来开玩笑。