论文部分内容阅读
选定乙酸,乙醇和异戊醇,甲苯和乙酸酐,乙酸乙酯和甲醇作为煤大分子结构中的模型化合物,使其在固体超强酸催化下进行了酯化、酰化、酯交换反应.对反应结果做GC/MS检测,对SZ和FSZ进行IR,XRD,TEM和NH3-TPD表征.结果表明:2种超强酸都具备高催化活性的基本特征,2种催化剂催化的酯化反应产物的总离子流色谱图基本相同,酯交换反应的情况也是如此,这是2种催化剂中含有等量布朗斯特酸催化的结果;FSZ催化的酰化反应转化率明显下降归因于FSZ中起催化作用的路易斯酸位的减少.除FSZ催化的酰化反应外,其余反应的转化率和选择性都达到了80%以上,FSZ回收率达90%,高于SZ的回收率.
Selected acetic acid, ethanol and isoamyl alcohol, toluene and acetic anhydride, ethyl acetate and methanol as the model compounds in the coal macromolecule structure, under the catalysis of solid superacid esterification, acylation, transesterification reaction. The reaction results were analyzed by GC / MS and the IR, XRD, TEM and NH3-TPD of SZ and FSZ were characterized.The results showed that the two kinds of superacid have the basic characteristics of high catalytic activity, two kinds of catalyst-catalyzed esterification reaction products Of the total ion chromatogram is basically the same, as is the case of the transesterification reaction, which is the result of the same amount of Brønsted acid catalysis contained in the two catalysts. The conversion rate of the acylation reaction catalyzed by FSZ is significantly reduced attributed to In addition to FSZ-catalyzed acylation, the conversions and selectivity of the other reactions reached more than 80%, the recovery rate of FSZ was 90%, higher than the recovery rate of SZ.