The transalkylation of polyethylbenzene, mainly diethylbenzene and triethylbenzene, with benzene catalyzed by tungstophosphoric acid has been studied in stirred autoclave.
The basic processing techniques of modern Pu'er tea include seven main steps: fresh leaf picking, spreading fresh leaves for cooling, fixation, kneading, sundrying, pile fermentation, autoclaving and desiccating.
,
究
苯
苯的烷基转移反应,
本加工工艺包括七个主要步骤：鲜叶采摘、铺鲜叶冷却、固定、
、
干、渥堆、
