林产化学与工业2017，Vol.37Issue(1)：36-42,7.DOI:10.3969/j.issn.0253-2417.2017.01.005
3-蒈烯催化转化反应及应用研究
Catalytic Transformation and Application of 3-Carene
摘要
Abstract
With the purpose of establishing an application method, studies on the catalytic transformation of 3-carene were carried out.The results indicated that metal catalysts, especially the platinum, had excellent ability to promote the ring opening and dehydrogenation of three-membered ring in 3-carene.With platinum-catalysis, the selectivity of dehydrogenation product cymene exceeded 90% and the mass ratio of m-cymene to p-cymene was nearly 7∶2.The ring opening and dehydrogenation of 3-carene could be similarly catalyzed by molecular sieves.However, with the rising of temperature, the dehydrogenation product p-cymene would further be cracked to aromatics like toluene.Molecular sieves ZSM-5 showed a prominent activity in promoting this reaction.On the basis of these results, a continuous process of preparation of toluene and m-cymene from 3-carene was established by using platinum and ZSM-5 as a kind of composite catalyst.The conversion rate of raw material was nearly 100% and the yield of all products was more than 85%.The yield and purity of one of the final products toluene were 25% and 99%, respectively.While m-cymene were 46% and 95%, respectively, with reaction conditions at the volume ratio of Pt/Al2O3 to ZSM-5 1∶1 and 280 ℃.关键词
3-蒈烯/催化转化/金属催化剂/ZSM-5型分子筛/间伞花烃Key words
3-carene/catalytic transformation/metal catalyst/ZSM-5 molecular sieves/m-cymene分类
化学化工引用本文复制引用
王婧,杨学兵,赵振东,徐士超,古研,卢言菊..3-蒈烯催化转化反应及应用研究[J].林产化学与工业,2017,37(1):36-42,7.基金项目
国家林业局林业科学技术推广项目资助([2015]30) （[2015]30）
