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本文简要介绍了用有机胺法生产碳酸钾的新工艺。 A new process for potash production from amine is briefed. | ||
用无水碳酸钾代替无水醋酸钠催化合成了香豆素。 Coumarin has been synthesized in Perkinreaction of acetic anhydride and salicylaldehydecatalyzed by anhydrous potassium carbonate. | ||
淡水河谷计划对镍，铜，煤和碳酸钾业务进行有机扩张。 Vale has plans for organic expansion in nickel, copper, coal and potash. | ||
这是用于建造房屋、家具、船只、碳酸钾、染料和海军用品的原材料。 Here was the raw material of houses and furniture, ships and potash, dyes and naval stores. | ||
碳酸钾使环氧丙烷选择性降低，三甲胺引起TS-1催化剂失活。 Trimethylamine catalyzes the reaction of propylene oxide to polyethers, and causes the deactivation of TS-1. | ||
本项研究是“河南卢氏县钾长石制取碳酸钾和硅酸钙纳米粉体实验研究”项目的一部分。 This research is a part of the project of the integrative research of distillingpotassium from potassium feldspar ore of Lushi county, Henan Province. | ||
地质学家说，还存在着其他尚未探明的储量，这可能意味着在数千年的时间内，世界都不会用完碳酸钾。 Geologists say that the existence of other, untapped deposits probably means that the world won't run out of potash for thousands of years. | ||
