醚

Factors studied include alkali treatment time and temperature, amount of sodium hydroxide and 2-chloroehanol as well as etherification time and temperature.

考察的因素包括碱处理时间与温度、氢氯化钠及2-氯乙醇的用量以及醚化时间与温度。

These results indicated that the presented method could be applied efficiently to the solution-phase combinatorial chemistry based on Williamson etherification.

结果表明该方法可高效率地用于基于Williamson醚化反应的液相组合化学合成。

Zeolite shows high catalytic activity for hydration etherification of propene, but its stability needs to be improved.

采用该方法改性的催化剂，对丙烯水合醚化反应连续运转 72 0h ，丙烯转化率由 5 6 6 %仅降为 5 2 %，表明催化剂稳定性得到明显改

The catalysts of supported 〓and 〓 were firstly used inthe etherification of FCC light gasoline.

将负载型磷钨酸和磷钨酸盐催化剂应用于催化裂化轻汽油的醚化反应。

This paper first reports the synthesis and applications in hydrolysis and etherification of a new polymer supported quaternary ammonium resin, which is an effective triphase catalyst .

本文首次报道一种新的高分子固载季铵树脂的合成及其在水解、成醚反应中的应用，此树脂是一种有效的三相催化剂。

The paper presents a new refining technology as etherification material with coker gasoline of Nanjing Refinery.

摘 要：本文研究了南京炼油厂延迟焦化汽油作为醚化原料的一种新的精制工艺。

But now, there not are the reports on the use of 〓and its salts in the etherification of FCC light gasoline.

但目前尚无磷钨酸及其盐用于催化裂化轻汽油醚化反应的报道。

First production of 10,000 tons annual capacity reagent resin, 5,000 tons of activated reagent, cationic etherification agents and oil additives several major series, a number of brand products.

先生产年产10000吨树脂显色剂、5000吨活性白土显色剂、阳离子醚化剂和油品添加剂几大系列、多个品牌的产品。

It was studied in this thesis the preparation of Artemisia glue, under the condition of alkali, chloroacetic acid was used as etherification agent and the properties, structures and application in quick-frozen dumpling were researched too.

本论文主要研究了以沙蒿胶为原料，氯乙酸为醚化剂，在碱性条件下合成羧甲基沙蒿胶的工艺，并研究了羧甲基沙蒿胶的性质、结构及其在速冻水饺中的应用。

Meanwhile, the dosages of etherification agent and alkali influencing on degree of substitution and reaction efficiency are discussed. The optimal alkali catalyst dosage (1%) is determined in the process of preparing cationic starch.

同时讨论了醚化剂用量和碱的用量对取代度和反应效率的影响，确定了合成阳离子淀粉反应的最佳碱催化剂用量为1%。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新