最后指出了醚化催化剂的发展趋势。
Finally, the developing trend of etherification catalysts is emphasized.
此外，对这几种催化剂的醚化活性、选择性进行了评价。
Moreover, their activity and selectivity in etherification reaction is simultaneously estimated and compared.
研究了经低度醚化和交联处理的医用纱布纤维的结构和性能。
The structure and properties of the surgical pledget produced by a low degree of etherification and crosslinking process were studied in this paper.
结果：使合成路线缩短一步，醚化收率比文献值提高20％以上。
RESULTS: Synthetic route was shorten by one step, the yield of etherification increased by 20% or more as compared with the yield in literature.
它主要由苯甲酰氯和苯酚制备苯甲酸苯酯，然后重排、醚化所得。
It is based on phenol benzoate which is made from benzoyl chloride and phenol through rearrangement and etherification.
采用异丁醇醚化三聚氰胺树脂，可开辟原料来源和降低产品成本。
The use of isobutanol etherified melamine has widened the source of raw material and reduced the cost.
通过烧焦再生，失活e -01催化剂的醚化活性可以完全恢复。
The etherification activity of the deactivated E-01 catalyst can be completely recovered by coke-burning regeneration.
醚化及交联反应主要在淀粉的非结晶区进行，反应并未破坏淀粉颗粒。
Etherifying and cross-lining occurred mainly in the amorphous region of the starch granule, and they do not disrupt the starch granule.
研究了水的用量，醚化温度，溶剂的量对CMS的粘度和取代度的影响。
Study the dosage of the water temperature, etherification, solvent quantity of CMS viscosity and substitution degree.
本文以生物质资源蔗糖为原料，通过烯丙基醚化反应制备了烯丙基蔗糖。
Allylsucrose was prepared by allyl etherification from sucrose which is biomass resource.
全面系统地考察了在层柱稀土固体酸催化剂上甲醇和环氧乙烷醚化反应。
Etherification of methanol with ethylene oxide (EO) was investigated systematically on the pillared rare earth solid acid catalyst.
采用二段醚化技术，轻汽油中叔碳烯烃醚化总转化率可达到75 %以上。
By adopting two stage etherification technology, the total conversion of tertiary carbonic olefins in light gasoline is up to 75%.
方法以对羟基苯甲酸为原料，经三步合成，即原料的醚化、酰氯制备和酰胺化。
Methods The substance was synthesized from P-hydroxybenzoic acid through three steps, those are etherification, preparation of acyl halide and amidation of the raw material.
催化裂化汽油醚化改质工艺是改善汽油品质，适应国内外市场需要的有效手段。
The etherification process for FCC naphtha is an effective means to im - prove the quality of the gasoline so as to meet the requirements of both domestic and foreign markets.
在羟丙基醚化反应中淀粉发生降解，产物MS与分子量变化无明确的定量关系。
All the HPS were the mixed products, whose MS had no clearly quantitative relation to the molecular weight distribution of the solid HPS.
分析了影响醚化催化剂使用寿命的因素，提出了延长醚化催化剂使用寿命的措施。
The factors which influences the service life of catalyst for etherification are analyzed, and the measures to lengthen its life are putted forword.
催化裂化汽油醚化改质工艺是提高汽油辛烷值以适应国内外市场需要的有效方法。
Upgrading FCC gasoline through etherification process is a efficient method to upgrade the octane number of gasoline so as to meet the demands of domestic and over - seas markets.
以乙酰乙酸叔丁酯为原料，经过肟化、醚化、氯代酯解反应合成了头孢克肟开环侧链酸。
Cefixime open side chain acid was prepared by oximation, etherification, chlorination, ester decomposition using t-butyl acetoacetate as starting material.
醚类作为重要的高辛烷值调和组分，需求量日益增加，醚化催化剂的研究也越来越活跃。
As an important octane booster in unleaded gasoline, the need for ethers becomes more and more.
丙烯水合醚化反应中有副产物丙酮生成，而异丙醇单独进料时产物中没有发现丙酮的生成。
It was shown that there was by product acetone in the products of propene hydration etherification, while there existed no acetone in the products of isopropanol dehydration reaction.
研究了苯磺酸型树脂催化的异戊烯和甲醇的醚化，考查了温度、醇烯比和空速对反应的影响。
The etherification of isoamylenes and methanol to form tert all methyl ether (TAME) by benz-sulfonic acid cation exchange resin as catalyst, was studied.
硝基苯胺在二甲苯中的溶解度要大于甲苯中的溶解度，而醚化物在两种溶剂中的溶解度相当。
Solubility of nitrobenzenamine in xylene was higher than that in toluene, but solubility of etherate was nearly the same in the two solvents.
探讨了以异丙醇-水作溶剂，通过一次醚化，制备高取代度、高粘度羧甲基淀粉醚的最佳条件。
This paper discusses the optimum condition for preparing carboxymethyl starch with high degree of substitution and high viscosity by using the solution isopropanol-water through etherification.
结果表明：不同情况下，其反应机理是不同的，总体而言，是一个酯化与醚化相互竞争的过程。
It was shown that the reaction mechanism is variable under different experiment conditions, as a whole, the reaction is a competing process between esterification and etherification one another.
本文探讨了异丁醇醚化三聚氰胺树脂的工艺条件，并列举了异丁醇醚化三聚氰胺树脂漆膜性能。
This paper discussed the manufacturing process of isobutanol etherified melamine and the performance of the paint film based on the title resin.
详细地考察了活化温度和活化时间以及反应温度和反应时间、溶剂用量对烯丙基醚化反应的影响。
A lot reaction factors, involving activation temperature, activation time, reaction temperature, reaction time, the amount of solvent, were investigated in detail.
本文考察了各种工艺条件对不同催化裂化汽油轻馏分临氢醚化反应醚收率的影响和各馏分反应特点。
The effects of operation conditions on ether yield of hydro-etherification of three light FCC gasoline fractions and the reaction characteristics of these fractions have been investigated.
本文考察了各种工艺条件对不同催化裂化汽油轻馏分临氢醚化反应醚收率的影响和各馏分反应特点。
The effects of operation conditions on ether yield of hydro-etherification of three light FCC gasoline fractions and the reaction characteristics of these fractions have been investigated.
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