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對叔丁基苯酚的制造方法


2020-03-16

對叔丁基苯酚的制造方法

對叔丁基苯酚的制造方法
(1)苯酚異丁烯法:以苯酚和異丁烯為原料,陽(yáng)離子交換樹(shù)脂為催化劑,常壓、110℃進(jìn)行烷基化反應,產(chǎn)品進(jìn)行減壓蒸餾可得到產(chǎn)品;
(2)苯酚二異丁烯法;采用硅鋁催化劑,在反應壓力為2.0MPa,溫度200℃,液相反應,處得到對叔丁基苯酚外,還得到對辛基苯酚,鄰叔丁基苯酚,反應產(chǎn)品經(jīng)分離得到對叔丁基苯酚;
(3)碳四餾分法:以裂解碳四餾分和苯酚為原料,以鈦-鉬氧化物為催化劑,反應得到以對叔丁基苯酚為主的苯酚烷基化反應的混合物,經(jīng)分離得到產(chǎn)品;
(4)磷酸催化劑法:以苯酚和叔丁醇為原料,產(chǎn)品經(jīng)水洗、結晶分離可制得產(chǎn)品。
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