经缩合、加成得目标产物。结果 产物经元素分析、IR、1H NMR、13 C NMR、 ESI MS确证,以十二酸计,三步合成目标产物α羟基十二酰乙基磺酸钠总产率5 5. 0 7%。 结论 工艺流程操作简便,产率较高、产品质量易于控制,适合于大规模制备。 Aim A new novel synthesis of the α-hydroxyl dodecyl ethyl sodium sulfonate. Methods Starting from dodecoic acid with acetic barium and ethyl formate, the target compound was prepared by condensation, addition. Results The synthesized product was proved to be α-hydroxyl dodecyl ethyl sodium sulfonate by elementary analysis, IR, 1H-NMR, 13 C-NMR and ESI-MS, through a threestep procedure starting from dodecoic acid in a total yield of 50.07%. Conclusion A cost-efficient facile synthetic route is suitable for large-scale preparation of target compound.
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化工专业英语 Special English for Chemical Engineering
提出了……的工艺 设计了……试验装置 确定了……试验方案 试验结果表明:在一定……范围内, 随……,产物的……。 对……研究, 确定了……。
A method to ……was put forward. (We suggested ……a new techology.) An experimental device was designed to the condition of reaction was confirmed. The results indicated that …… within the definite scope of ……increased gradually while the …… decreased
英语科技论文撰写
化工专业英语 Special English for Chemical Engineering
Reverse-micellar extraction for micellar-solubilized contaminant and surfactant removal Abstract: : Decontamination of surfactant solutions is important for reusing the surfactant and improving the economics of surfactant-based subsurface remediation. Typical solvent extraction is not efficient for removing high equivalent alkyl carbon number (EACN) contaminants from surfactant solutions because the solvent itself will be highly soluble in the surfactant systems. Reversemicellar extraction uses relatively hydrophilic solvents (e.g. alcohols) to treat surfactant solutions containing micellar-solubilized high EACN contaminants. The micelles break up and migrate into the solvent phase to re-aggregate as reverse micelles during the extraction. The contaminants released during breakup of micelles also partition into the solvent phase. The reverse micelles, which contain ‘solubilized’ water and aqueous contaminant, exist together with dissolved contaminant in the solvent phase. Decreased pressure distillation can be then employed to further separate the different components in the solvent phase to achieve final contaminant and surfactant separation. Decreased pressure distillation following a reverse-micellar extraction can significantly reduce the total energy consumption compared to a direct distillation of the solution.
英语科技论文撰写
化工专业英语 Special English for Chemical Engineering
反胶团萃取中胶溶污染物和表面活性剂的除去 摘要： 摘要： 表面活性剂溶液中的污染物的去除对于表面活性
剂的重新使用和改善基于表面活 性剂的活性使用的经济性是非常重要的。典型的溶剂萃取对于在表面活性剂溶液中 除去高价烷基碳(EACN)污染物是没有效果的，因为溶剂本身在表面活性剂系统 中就是高溶解性的物质。反胶团萃取可以使用相对高极性的溶剂(如乙醇)来处理 包含高EACN胶溶污染物的表面活性剂溶液。在萃取过程中胶团裂开，作为反胶团 移动到溶剂相。在胶团裂开过程中，污染物释放到溶剂相中。在溶剂相中包含“溶 解水”和溶液污染物的反胶团和溶解在溶剂中的污染物同时存在。通过减压蒸馏可 以进一步分离溶剂中的不同组分，这样就能够达到污染物和表面活性剂分离的目的。 和溶液的常压蒸馏相比，反胶团萃取溶液的减压蒸馏可以明显减少总能量的消耗。
英语科技论文撰写
化工专业英语 Special English for Chemical Engineering
英语科技论文撰写
化工专业英语 Special English for Chemical Engineering