矿物组分对混合酯水解及生烃的催化作用

Hydrolysis and hydrocarbon generation of mixed fatty acid esters catalyzed by natural minerals

选择十六烷酸甲酯和十八烷酸甲酯组成的混合酯为模型反应物,考察低压下矿物低温催化混合酯水解及生烃的影响因素,并进行活性评价。先考察6种天然矿物和7种未熟烃源岩低温催化酯水解及生烃的作用,然后对天然矿物组分与未熟烃源岩就低温催化混合酯水解及生烃的作用进行关联,再考察不同比例复配的黏土和碳酸盐矿物的低温催化酯水解及生烃的作用。实验结果表明:未熟烃源岩低温催化混合酯水解及生烃率的趋势与6种天然矿物含量加权处理关系较好;不同比例复配的黏土矿物和碳酸盐矿物体现了不同的催化作用,在确定的实验条件下黏土矿物与碳酸盐矿物质量比为1:1时生烃效率最高。

The mixed ester consisting of palmitic acid methyl ester and tetradecanoic acid methyl ester was chosen as the model reaction compound.The influencing factors of its hydrolysis and hydrocarbon-generating reaction catalyzed by minerals at low temperature and low pressure were studied.The hydrolysis and hydrocarbon generation of mixed ester catalyzed by six kinds of natural minerals and seven kinds of immature source rocks at low temperature were investigated.The natural minerals were associated with immature source rocks in this reaction.Furthermore,the effect of different ratios of clay minerals and carbonate minerals on hydrolysis and hydrocarbon generation of mixed ester catalyzed by minerals was investigated.The results show that the tendency of hydrolysis and hydrocarbon generation rate of mixed ester catalyzed by immature oil source rocks is similar to the weighted contents of six kinds of natural minerals.Different ratios of carbonate minerals and clay minerals show the different catalytic efficiency.When the mass ratio is 1：1,the composite minerals reach the highest hydrocarbon-generating efficiency.