@article{oai:ir.kagoshima-u.ac.jp:00004554,
 author = {高橋, 武重 and TAKAHASHI, Takashige and 劉, 興允 and LIU, Xing Yun},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Nov},
 note = {Three kinds of HZSM-5 zeolite with different Si/Al ratios were prepared to determine the effect of the Si/Al ratio on the catalytic activity of the zeolite. The Si/Al ratio did not affect on the surface area nor the crystallinity. However, the acidity of the zeolite decreased with an increasing ratio of Si/Al. The acid strength distribution of the zeolite was compared with those of amorphous silica-alumina and HY type zeolite. The results indicate that HZSM-5 has many strong acid sites which could be effective for the disproportionation of aromatic hydrocarbons. An o-xylene isomerization reaction was carried out for the HZSM-5 zeolites in a fixed type reactor. The catalytic activity of the zeolites was greater than that of amorphous silica-alumina, but no activity difference was observed among the different zeolites. Unlike the isomerization over silica-alumina catalyst, 1, 2, 4- and 1, 3, 5- trimethybenzenes could not be detected in the product streams. The result suggests that the micropore of the zeolite, composed  of a 10 membered oxygen rings, 
prevents a bulky compound such as trimethylbenzene from being produced.},
 pages = {119--124},
 title = {ZSM-5ゼオライトの触媒活性におよぼすSi/Al比の影響},
 volume = {26},
 year = {1984}
}