@article{oai:ir.kagoshima-u.ac.jp:00010589,
 author = {高橋, 武重 and TAKAHASHI, Takeshige and 劉, 興允 and LIU, Xing Yun and 西村, 信也 and NISHIMURA, Nobuya},
 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 = {The effects of acid strength distribution and micro pore size of the zeolites on the catalytic activity of toluene disproportionation reaction have been studied with metal and boron modified HZSM-5 zeolites. It has been found that the concentration of strong acid sites, toluene conversion and p-xylene selectivity for the metal or boron exchanged ZSM-5 modified by the different methods were dependent only upon the metal content in the zeolites. Since the micro pore size of the modified zeolite decreased with the content, a precursor for o- and m- xylene, whose molecular sizes are larger than that of p-xylene, was not produced in the micro pore. This steric effect results in the improvement of p-xylene selectivity.},
 pages = {93--99},
 title = {金属およびホウ素担持ZSM-5触媒の酸強度分布とトルエン不均化反応活性},
 volume = {31},
 year = {1989}
}