The article introduces research and application situation of solvent deasphalting-deoiling asphalt gasification-deasphalting oil FCC group technology.
介绍了渣油溶剂脱沥青-脱油沥青气化-脱沥青油催化裂化组合工艺的研究及应用情况。
2
If the tertiary butyloxycarbonyl group is being used as amino-protecting group, its removal is effected with acid, such as HCl and isopropanol as a solvent or with trifluoroacetic acid neat.
如果用三叔丁基羟基作为氨基保护基团使用，应用酸来将其脱去，如以盐酸和异丙醇为溶剂或无水三氟乙酸。
3
There are impact factor to be discussed such as solvent polarity, nucleofuge, attract electron group the nunucleophilicity of nucleophilic reagent.