甲酸盐

Different from many other researches the Henkel-Esterification process was studied here which starts from 1,8-naphthalenedicarboanhydride. In the Henkel reaction of 1,8-naphthalenedicarboanhydride to 2,6-naphthalenedicarboxylic acid (abbreviated as 2,6-NDA) non-cadmium catalytic system was used. In atmosphere of carbon dioxide 1,8-naphthalenedicarboanhydride can be effectively converted to 2,6-NDA in the temperature range of 300~340℃ with zinc carbonate as catalyst and the yield of 2,6-NDA can reach more over 62%.

和国内外绝大多数研究不同的是，论文结合公司自身的原料资源优势和长远规划，提出了从工业苊深加工产品—1，8-萘二甲酸酐出发，经过非镉系催化剂催化转位，然后再进行非酸催化酯化合成2，6-萘二甲酸二甲酯的工艺路线，并对工艺过程中涉及的成盐过程、催化转位反应、酯化反应等进行工艺参数的重点考察，对合成产物进行分析确证。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。