Preparation of zeolite bound by mfi structure type zeolite...

B - Operations – Transporting – 01 – J

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252/2, 196/96, 2

B01J 29/06 (2006.01) B01J 29/80 (2006.01) B01J 37/00 (2006.01) C10G 11/05 (2006.01)

Patent

CA 2303172

The preparation of zeolite bound zeolite comprising zeolite core crystals other than MFI structure zeolite which are bound by MFI structure type zeolite and the use of the zeolite bound by MFI structure type zeolite prepared by the process as an adsorbent or as a catalyst for hydrocarbon conversion. The zeolite bound zeolite is produced by including seed crystals of MFI structure type zeolite into the silica bound aggregate forming mixture and then converting the silica binder of the aggregate to the MFI binder crystals. The resulting zeolite bound zeolite has good strength and integrity.

L'invention concerne la préparation d'une zéolite à liaison zéolitique comprenant des cristaux de noyau de zéolite autres que ceux d'une zéolite de type structurel MFI, liés par une zéolite de type structurel MFI. L'invention concerne également l'utilisation d'une zéolite liée par une zéolite de type structurel MFI, préparée par ledit procédé sous forme d'adsorbant ou de catalyseur destiné à la transformer en un hydrocarbure. La zéolite de liaison zéolitique est produite par introduction de cristaux d'ensemencement d'une zéolite de type structurel MFI dans l'agrégat de liaison de silice formant un mélange, et par transformation du liant de silice de l'agrégat en cristaux de liant MFI. La zéolite de liaison zéolitique obtenue présente une bonne résistance et une bonne homogénéité.

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