Sulfuric acid was used as a catalyst to prepare acetic esters with more by-product, low yield, equipment corrosion and acid wastewater.
由于硫酸作催化剂合成羧酸酯副产物多、产率低、且腐蚀设备、造成环境污染。
2
The methods to utilize the liquid-preserved aceticacid bacteria during yielding vinegar were established, and the main factors affecting its acid yield were studied in this paper.
试验确定了液体保藏醋酸菌的应用方法，并对影响其产酸水平的因素进行了初步研究。
3
This method involves using the glacial aceticacid as a catalyst, adding the litharge in aqueous medium and adding a quantity of oil of vitriol to yield lead sulfate.