安徽化工
安徽化工
안휘화공
ANHUI CHEMICAL INDUSTRY
2014年
3期
41-43
,共3页
6-叔丁基邻甲酚%6-叔丁基间甲酚%2-叔丁基对甲酚%混甲酚%异丁烯%介孔分子筛催化剂
6-叔丁基鄰甲酚%6-叔丁基間甲酚%2-叔丁基對甲酚%混甲酚%異丁烯%介孔分子篩催化劑
6-숙정기린갑분%6-숙정기간갑분%2-숙정기대갑분%혼갑분%이정희%개공분자사최화제
6-tert-butyl-o-cresol%6-tert-butyl-m-cresol%2-tert-butyl-p-cresol%the cresol mixture%isobutene%mesoporous molecular sieve catalyst
以介孔分子筛为催化剂，催化烷基化混合邻间对甲酚制备6-叔丁基邻甲酚、6-叔丁基间甲酚、2-叔丁基对甲酚混合液，并精馏获得三种叔丁基甲酚纯品。考查了催化剂用量、异丁烯用量、反应温度等反应条件对烷基化反应的影响，确定了最佳工艺条件。结果表明,催化剂为三混甲酚用量的2.0%（质量）,异丁烯用量与三混甲酚用量之比为1.05∶1（摩尔比）,最佳反应温度为95℃的反应条件下,三混甲酚的总转化率达到96.25%以上，反应液中目标产品含量达94.67%，产品选择性可达98.36%。精馏后，6-叔丁基邻甲酚、6-叔丁基间甲酚、2-叔丁基对甲酚三种产品的质量含量分别为99.75%、99.57%、99.54%。整个工艺过程安全环保，成本低，能耗低，收益高。
以介孔分子篩為催化劑，催化烷基化混閤鄰間對甲酚製備6-叔丁基鄰甲酚、6-叔丁基間甲酚、2-叔丁基對甲酚混閤液，併精餾穫得三種叔丁基甲酚純品。攷查瞭催化劑用量、異丁烯用量、反應溫度等反應條件對烷基化反應的影響，確定瞭最佳工藝條件。結果錶明,催化劑為三混甲酚用量的2.0%（質量）,異丁烯用量與三混甲酚用量之比為1.05∶1（摩爾比）,最佳反應溫度為95℃的反應條件下,三混甲酚的總轉化率達到96.25%以上，反應液中目標產品含量達94.67%，產品選擇性可達98.36%。精餾後，6-叔丁基鄰甲酚、6-叔丁基間甲酚、2-叔丁基對甲酚三種產品的質量含量分彆為99.75%、99.57%、99.54%。整箇工藝過程安全環保，成本低，能耗低，收益高。
이개공분자사위최화제，최화완기화혼합린간대갑분제비6-숙정기린갑분、6-숙정기간갑분、2-숙정기대갑분혼합액，병정류획득삼충숙정기갑분순품。고사료최화제용량、이정희용량、반응온도등반응조건대완기화반응적영향，학정료최가공예조건。결과표명,최화제위삼혼갑분용량적2.0%（질량）,이정희용량여삼혼갑분용량지비위1.05∶1（마이비）,최가반응온도위95℃적반응조건하,삼혼갑분적총전화솔체도96.25%이상，반응액중목표산품함량체94.67%，산품선택성가체98.36%。정류후，6-숙정기린갑분、6-숙정기간갑분、2-숙정기대갑분삼충산품적질량함량분별위99.75%、99.57%、99.54%。정개공예과정안전배보，성본저，능모저，수익고。
The alkylation reaction of mixture of o-cresol,m-cresol and p-cresol catalyzed by mesoporous molecular sieve catalyst to 2-tert-butyl-o-cresol,6-tert-butyl-m-cresol and 2-tert-butyl-p-cresol was studied. The effects of reaction conditions,namely catalyst dosage,isobutene dosage and reaction temperature were investigated. The reaction conditions were determined. The experimental results showed that the conversion could reach 96.25%, the selectivity could reach 98.36 % under the reaction conditions of reaction: catalyst/the cresol mixture weight ratio of 2%, temperature 95℃. The process is safe and environmentally friendly with low cost and low energy consumption.
