| 摘要 |
<p>PURPOSE:To efficiently obtain modified crystalline galloaluminosilicate having excellent catalytic activity and catalytic life, etc., by calcining galloaluminosili cate obtd. by hydrothermal reaction, having ZSM-5 type crystal structure, at a fixed temp. CONSTITUTION:The galloaluminosilicate having ZSM-5 type structure is pro duced by mixing each component source contg. silica-, alumina-, gallium-, alkali metal-source, etc., proper crystallizing agent and water, and by hydrothermally reacting under a fixed pressure at the fixed temp. Then, by treating, as occasion demands, the galloaluminosilicate with an aq. soln. of alkali hydroxide and thereafter, by calcining at 700-1,000 deg.C, the modified crystalline galloalumino silicate having ZSM-5 type crystal structure is obtd. The obtd. crystalline galloaluminosilicate is suitably used as catalyst, etc., for producing aromatic hydrocarbon from 2-12C hydrocarbon.</p> |
