异丁烷与丁烯烷基化反应用新分子筛催化剂的研究

探讨了六方沸石分子筛催化剂对异丁烷与丁烯烷基化反应的催化活性。实验确定了烷基化反应的温度、反应时间、异丁烷与丁烯摩尔比及反应压力对丁烯转化率及目的产物Ｃ０８ 的选择性的影响。并对各种参数的影响进行了简要分析。在适宜反应条件下，丁烯的转化率达到９８％ ，对Ｃ０８ 的选择性接近９３ ％ 。还进行了催化剂的物性测定，利用红外光谱和ＴＰＤ 氨脱附表征了催化剂表面酸中心性质及酸强度。测定结果表明，该催化剂具有大的比表面积，较多的酸中心和较高的酸强度，因而对异丁烷与丁烯的烷基化具有较高的催化活性。

ALKYLATION OF ISOBUTANE WITH BUTENE ON HEXAGONAL FAUJASITE CATALYST

Alkylation of isobutane with butene on hexagonal Faujasite Catalyst is reported in the paper.Effect of reaction conditions such as alkylation temperature,time,ratio of isobutane to butene and reaction pressure on the conversion of butene and selectivity of C 0 8(S) is investigated experimentally.At Suitable condition,conversion of butene reachs 98%,S is about 93%.Physical properties of the catalyst are determined.Characterization of catalyst is made by IR and TPD to illustrate the properties of acidic centers and acidic strength.The results show that the catalyst has high specific surface,more acidic centers and stronger acidity,therefore it possesses higher activity for the alkylation of isobutane with butene.