中文摘要：

在固定床反应器上考察了氢型丝光沸石（HM）-氧化铝双组元负载MoO3催化剂上的1-丁烯歧化反应性能，通过氨程序升温脱附、X射线衍射和氢程序升温还原对样品进行了表征．实验结果表明，在110℃，0.1MPa，WHSV=1.5h^-1及TOS=1h的反应条件下，MoO3没有歧化反应活性．Al2O3，HM-Al2O3和HM载体上只生成异构产物，并且载体酸性越强，异构产物越多．MoO3／HM几乎没有歧化活性，而MoO3／Al2O3催化剂七生成了一定量的歧化产物，且各产物收率相近．MoO3／HM-Al2O3具有最高的歧化活性，1-丁烯转化率为84．9％，丙烯和戊烯收率分别为28.5％和20.6％．催化剂本身的酸性和载体表面Mo物种存在状态是影响1-丁烯歧化制丙烯反应性能的两个关键因素．

英文摘要：

Metathesis reactions of 1-butene over a MoO3/H-mordenite-alumina （MoO3/HM-Al2O3） catalyst were investigated in a fixed-bed reactor. The catalysts were characterized by NH3 temperature-programmed des orption, X-ray diffraction, and H2 temperature-programmed reduction. The results indicate that under the reac- tion conditions of 110℃, 0.1 MPa, WHSV = 1.5 h^-1, and TOS= 1 h, MoO3 shows no isomerization and metathesis activities. Al2O3, HM-Al2O3, and HM supports only possess suitable isomerization activity controlled by the acidity of the samples, and the isomerization products increase with the acid strength. The yields of prod- ucts are close to each other on the MoO3/Al2O3 catalyst with less metathesis activity. MoO3/HM-Al2O3 has the best reaction performance, on which 1-butene conversion, propene yield, and pentene yield are 84.9%, 28.5 %, and 20.6 % , respectively. The acidity of the catalyst and the oxidation state of Mo species are the two key factors for the catalyst performance for 1-butene metathesis.