无机盐类对天然矿物低温催化混合酯生烃反应的影响

Effects of Inorganic Salts on the Hydrocarbon Generation of Mixed Ester Catalyzed by Natural Minerals at Low Temperature

脂肪酸酯是一类重要的生烃母质。选择了十四烷酸甲酯、十六烷酸甲酯和十八烷酸甲酯的混合酯为模型反应物,以方解石、白云石、伊利石、钙蒙脱石和黄铁矿为催化剂,分别考察了氯化钾、氯化镁、氯化钠、硫酸钠以及混合盐对天然矿物低温催化混合酯生烃反应的影响。结果表明,无机盐类对矿物催化下混合酯的生烃反应均有不同程度的影响,硫酸钠具有反催化作用,其它盐类具有正催化作用。且在各无机盐存在下,不同的矿物表现出不同的催化活性。

Fatty acid ester is a kind of important hydrocarbon source matter. In this paper, the mixture of tetradecanoic acid methyl ester, palmitic acid methyl ester and methyl stearate were chosen as the model reactant. Calcite, dolomite, illite, Ca-montmorillonite and pyrite were chosen as catalyst. The effects of potassium chloride, magnesium chloride, sodium chloride, sodium sulfate and mixed salt on the hydrocarbon generation of mixed ester were investigated. The results show that the effects of inorganic salts on the hydrocarbon generation from mixed ester catalyzed by minerals are different. Sodium sulfate exhibit inhibition effects and the other salts promote the hydrocarbon generation. And it has the different catalytic activities with the different minerals in the presence of inorganic salts.