合成气

The synthesis of acrolein by means of the catalytic vapor phase condensation of formaldehyde and acetaldehyde was studied.

利用冷凝甲醛和乙醛的气相催化法，来研究丙烯醛的合成。

A method for separation and analysis of salicylic aldehyde and phenol by capillary gas chromatography was developed.

采用毛细管气相色谱法对由苯酚和甲醛为原料合成的水杨醛及反应物苯酚进行了分离分析。

Abundant instances and experimentations on synthetic dawsonite indicate that carbonic acid or excess carbon dioxide is necessary for generating dawsonite. Therefore, occurrence of dawsonite is always associated with carbon dioxide gas reservoir.

大量的实例及人工合成片钠铝石实验表明，片钠铝石的形成需要碳酸溶液或过量的CO2气，片钠铝石的分布往往与CO2天然气藏相伴生。

Based on the predecessor study on deamination of industrial ethylenediamine on normal pressure and on the basic principles of reaction engineering,the method,criteria and parameter of amplification is determined.

根据以乙二胺为原料常压气固相催化合成哌嗪的小试研究结果，依据反应工程学的基本原理，确定了放大方法、放大准则和放大参数。

The synthesis of DEC by vapor phase directoxidative carbonylation of ethanol was evaluated as "green technology" route withmild condition, unharmful byproduct and high atomic economy.

乙醇气相直接氧化羰基合成DEC以CO，O_2和乙醇为原料，原子经济性高，原料易得，副产无害，是一条最具发展潜力的非光气法绿色合成工艺路线。

Mono dodecyl phosphate is synthesized using trichloro phosphate and di dodecyl phosphate is synthesized using phosphorous pentoxide. The structures are confirmed by IR and contents are analyzed by GC and HPLC. Mixed esters with different mass ratios of mono and di esters are prepared.

分别以三氯氧磷为磷酸化剂，合成并提纯了正十二烷基磷酸单酯，以五氧化二磷为磷酸化剂，合成并提纯正十二烷基磷酸双酯，其结构通过质谱得到了确证，产品组成采用气相色谱和高效液相色谱得到了确定。

Thirdly, the final product MPO was synthesized in a self-designed bubble tower reactor under atmospheric pressure in presence of Pd/γ-Al_2O_3 catalyst.

采用Pd／γ-Al_2O_3作为加氢催化剂，常压下在自制的塔式加氢器中合成出了目的产物2-甲基-1，3-丙二醇，采用IR、GC900气相色谱仪及QP-5000型气质联用仪等技术确证了本工艺合成的目的产物MPO。

The effect of the substrate concentrations on 5-fluorouridine production was investigated in the presence of various concentrations of uridine and 5-fluorouracil under the optimal conditions mentioned below. The best conversion yield, 49% was obtained in optimal reaction conditions.

我们也探讨了在不同反应条件下5-氟尿苷的酶促合成，结果表明，产气肠杆菌EAM-Z〓游离细胞以UR和5-FU作为底物合成5-FUR的最佳条件为：最适pH为7.8，最适温度55℃，UR/5-FU为2.8，磷酸盐浓度为30mM，菌体用量为10％，反应时间为9h。

The object of this study is to prepare of soy oleic acid from the acidic oil , which was made from soap stock by acidification with sulfur acid, followed by hydrolysis, distillation and emulsification separation.

以菜籽油或酸化油为原料，进行了菜籽油及酸化油合成生物柴油工艺中试；得出了较理想的合成工艺条件；利用气相色谱及化学分析法，对生物柴油的燃烧特性进行了分析。

In this article the mechanism, synthesis process , application and development of the synthetic technology of nicotinic acid are introduced.

综述了烟酸的作用机理、合成工艺、应用及研究进展，从合成方法上看，一般分为试剂氧化法、氨氧化法、气相氧化法、电化学氧化法、生物氧化法和吡啶羟基化法等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。