Thermal stability and oxidation characteristics of α-pinene, β-pinene and α-pinene/β-pinene mixture

编号 020030703

推送时间 20210906

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 Thermal stability and oxidation characteristics of α-pinene, β-pinene and α-pinene/β-pinene mixture

来源期刊 RSC Advances

期 第307期

发表时间 20210602

关键词 α-pinene;  β-pinene;  turpentine; 

摘要 Turpentine is a renewable resource, has good combustion performance, and is considered to be a fuel or promising additive to diesel fuel. This is very important for the investigation of thermal stability and energy oxidation characteristics, because evaluation of energy or fuel quality assurance and use safety are necessary. The main components of turpentine are a-pinene and b-pinene, which have unsaturated double bonds and high chemical activity. By investigating their thermal stability and oxidation reaction characteristics, we know the chemical thermal properties and thermal explosion hazard of turpentine. In this present study, the thermal stability and oxidation characteristics of a-pinene, b-pinene and apinene/b-pinene mixture were investigated using a high sensitivity accelerating rate calorimeter (ARC) and C80 calorimeter. The important parameters of oxidation reaction and thermal stability were obtained from the temperature, pressure and exothermic behavior in chemical reaction. The results show that a-pinene and b-pinene are thermally stable without chemical reaction under a nitrogen atmosphere even when the temperature reaches 473 K. The initial exothermic temperature of the two pinenes and their mixture is 333–338 K, and the heat release (DH) of their oxidation is 2745–2973 J g1. The oxidation activation energy (Ea) of a-pinene, b-pinene and a-pinene/b-pinene mixture is 116.25 kJ mol1, 121.85 kJ mol1, and 115.95 kJ mol1, respectively. There are three steps in the oxidation of pinenes: the first is the induction period of the oxidation reaction; the second is the main oxidation stage, and the pressure is reduced; the third is thermal decomposition to produce gas.

服务人员 尚玮姣

服务院士 宋湛谦

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