吡啶醋酸盐；
The preparation of pure pyridinium dichromate is described.
三氧化铬与吡啶反应制备吡啶重铬酸盐。
We also researched the extraction-oxidation desulfurization with N-alkyl-pyridinium-based ionic liquids.
同时还研究了吡啶离子液体萃取-氧化汽油脱硫的情况。
E. g. "the spectrum of pyridine coordinately bonded to the surface is markedly different from that of the pyridinium ion".
例如：吡啶的光谱与表面的协调度和吡啶离子有显著不同。
The styrene pyridinium provided by the invention has good liner optical property, good water solubility and good consistency with PVA water solution;
本发明提供的苯乙烯吡啶盐具有良好的线性光学性能，水溶性好，与PVA水溶液有很好的相容性；
This method can be used in the synthesis of 1 - (4-pyridyl) pyridinium dichloride to design experimental scheme. The yield of the product will be more than 80%.
在双吡啶盐酸盐的合成中，运用该方法设计试验方案，产物收率可达80%以上。
A series of imidazolium, pyridinium and triethylamine cation-based ionic liquids were designed and synthesized as catalyst. The ionic liquids were characterized by 1h NMR and IR.
设计合成了一系列基于咪唑、吡啶和三乙胺阳离子的离子液体，通过核磁共振氢谱和红外光谱对离子液体结构进行了表征。
A series of imidazolium, pyridinium and triethylamine cation-based ionic liquids were designed and synthesized as catalyst. The ionic liquids were characterized by 1h NMR and IR.
设计合成了一系列基于咪唑、吡啶和三乙胺阳离子的离子液体，通过核磁共振氢谱和红外光谱对离子液体结构进行了表征。
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