|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||423/706 ; 423/DIG.23 ; 502/077|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 6 인용 특허 : 24|
Ferrierite is prepared by a method that provides extremely pure crystalline material. The method consists of preparing a mixture of silica, alumina, alkali metal and pyridine of a certain composition and heating said mixture to form the crystals. The SiO.sub.2 /Al.sub.2 O.sub.3 and OH.sup.- /SiO.sub.2 are controlled to insure preparation of high SiO.sub.2 /Al.sub.2 O.sub.3 ratio, high surface area and high purity ferrierite. An improved olefin skeletal isomerization catalyst is prepared from a high silica to alumina ratio, high surface area and high puri...
[ We claim:] [1.] A method of preparing a ferrierite crystalline aluminosilicate comprising:a. preparing a mixture comprising an alkali metal source, silica source, alumina source and a template consisting of pyridine, said mixture having the following composition in moles: EQU Al.sub.2 O.sub.3 : 60-500 SiO.sub.2 : 10-40 R: 1.5-4 M.sub.2 O: 950-2000 H.sub.2 Owherein R is pyridine, M is an alkali metal and said alkali metal source and silica source are such that there are 0.05 to 0.15 moles of OH.sup.- for each mole of SiO.sub.2 to produce a ferrierite ha...