Using cesium carbonate as catalyxer and potassium carbonate as base,reacting directly phenol with alkyl halides in refluxing acetonitrile will give alkyl aryl ethers in good yields.

1,3-bis(4-nitrilemethoxyphenoxy)propane was synthesized by etherification with 4-hydroxybenzonitrile and 1,3-dibromopropane, using tetrabutyl ammonium bromide, PEG400, cesium carbonate as catalyst respectively and anisole as solvent, and the structure of etherification product was characterized by IR.

Preparation of cryolite with high molecule ratio from fluosilicic acid and ammonium hydrocarbonate;

First,brine is reacted with ammonium hydrocarbonate to obtain the sodium hydrocarbonate and the ammonium chloride solution,and then filtrated.

Phosphogypsum reacts with ammonium hydrocarbonate at 5-30℃ to obtain ammonium sulfate solution,then the solution reacts with potassium chloride at 30℃ with adding an organic solvent to produce potassium sulfate.

Discussion on drying process for ammonium bicarbonate;

Study on preparation of high purity manganese carbonate from manganese sulfate and ammonium bicarbonate;

Nitrification inhibition effect of dicyandiamide on ammonium bicarbonate in red soils with different textures;