fluorine atmosphere
1.Introduction of freon (CCl_2F_2) into the sintering atmosphere increases the amount of retained fluorine in the silica glass up to 2.5％(wt).
2.At room temperature and ambient atmosphere, the reactions of acenaphthene, anthracene, naphthalene, fluorine, 1-methylnaphthalene, 2,6-dimethylnaphthalene, phenol and α-naphthol with nitrobenzene over the high active catalyst of AlCl_3 were investigated.
