The catalyst is prepared by sequential precipitation of cobalt with aluminium ions in the presence of an alkaline precipitationagent.
在碱沉淀剂存在下，通过按序沉淀钴与铝离子， 制备催化剂。
2
We can use arsenic alkali residue to produce glass precipitationagent, turning harm to good. It can be applied widely in industry and bring good society benefit.
可用砷碱渣制备玻璃沉清剂，变害为利，工业实践性强，有较好的社会效益。
3
The large particle yttrium oxide was prepared using oxalic acid as precipitationagent. The effects of preparation conditions on the particle size of yttrium oxide were discussed.