CAJ | 학술논문

目前，液化的生物油与石油粗油成分接近，通常环类化合物含量高，如煤焦油中酚及其衍生物含量占40%以上，急需加氢升级技术。超临界乙醇（243.1℃，6.38MPa）温度、压力条件低，具有良好的传质性能，且为绿色、可再生溶剂。在超临界乙醇体系下的催化加氢是一种油升级有效方式。本文以苯酚为生物油中环类化合物典型模型，在300～400℃、Pt/C 催化剂下，探讨超临界乙醇体系下苯酚催化加氢过程。研究分析了超临界乙醇中温度、氢气压力和反应时间对苯酚催化加氢降解规律的影响，并建立了能很好地描述过程中苯酚转化率的动力学模型（R2=0.989）。实验表明：该体系下的苯酚催化加氢降解反应的级数为二级，反应的活化能为51.7kJ/mol；尽管升高温度和氢气压力均能提高苯酚的转化率，但温度对转化率的影响更为显著。本研究将为更好地控制反应过程和提高超临界乙醇体系中苯酚的转化率提供参考。
목전，액화적생물유여석유조유성분접근，통상배류화합물함량고，여매초유중분급기연생물함량점40%이상，급수가경승급기술。초림계을순（243.1℃，6.38MPa）온도、압력조건저，구유량호적전질성능，차위록색、가재생용제。재초림계을순체계하적최화가경시일충유승급유효방식。본문이분분위생물유중배류화합물전형모형，재300～400℃、Pt/C 최화제하，탐토초림계을순체계하분분최화가경과정。연구분석료초림계을순중온도、경기압력화반응시간대분분최화가경강해규률적영향，병건립료능흔호지묘술과정중분분전화솔적동역학모형（R2=0.989）。실험표명：해체계하적분분최화가경강해반응적급수위이급，반응적활화능위51.7kJ/mol；진관승고온도화경기압력균능제고분분적전화솔，단온도대전화솔적영향경위현저。본연구장위경호지공제반응과정화제고초림계을순체계중분분적전화솔제공삼고。
Supercritical ethanol (243.1℃,6.38MPa)has lower temperature and pressure conditions and has good mass transfer performance,so it can serve as a green,renewable solvent in hydrogenation technology. Catalytic hydrogenation under supercritical ethanol system is an effective way to upgrade oil. In this paper,the hydrogenation process of phenol,a typical model compounds in bio-oil,was explored under supercritical ethanol system at 300—400℃ with Pt/C catalyst. This paper investigated the effects such as temperature,hydrogen pressure and reaction time on the degradation of phenol by catalytic hydrogenation in supercritical ethanol. The results showed that higher temperature and hydrogen pressure increased phenol conversion rate,and the effects of temperature was more remarkable. A kinetic model was established based on the results. The model could accurately predict the conversion rate of phenol at different process conditions(R2= 0.989). The results of kinetic investigation indicated that the reaction order of the catalytic hydrogenation of phenol in supercritical ethanol was two,and the activation energy was 51.7kJ/mol.