Propyl glycidyl ether ( PGE ) was obtained from propyl alcohol and epichlorohydrin by phase - transfer catalysis.以环氧氯丙烷和正丙醇为原料,通过相转移催化法合成了正丙基缩水甘油醚.The FBC ( fluorous biphase catalysis ) is a new nonaqueous immobilization...
In specific acid catalysis, the undissociated acids do not contribute.在特殊的酸催化中, 不离解的酸不起作用.The corresponding reaction of acetaldehyde is subject to general base catalysis.乙醛相应的反应服从广义的碱催化.Catalysis has increased the rate o...
他一直等到所有的行李都拿走了，但始终没看见葆拉的。He waited until all the luggage was cleared, but Paula's never appeared.他抓得很紧，但她还是掰开他的手，把它拿走了。He held on tight but she prised it from his fingers.窃贼洗劫了办公室,拿走了一口袋散币.Thieves ransacked the offi...