FCC CATALYST WITH PSEUDO SOLID STATE CRYSTALLIZED ZEOLITE

    公开(公告)号:US20240109057A1

    公开(公告)日:2024-04-04

    申请号:US18261301

    申请日:2022-01-14

    IPC分类号: B01J29/40 B01J37/00 B01J37/08

    摘要: The present invention is related to a process for the preparation of zeolitic material through condensed gel crystallizations and their use in an FCC Catalyst composition. The present disclosure describes methods for improved preparation of zeolites by preparing an aqueous precursor mixture; removing at least 5 wt % of the total water from the aqueous precursor solution to create a solution with greater solids content; crystallizing the solution of step (b) to create a zeolite product. The resulting zeolite is used in an FCC catalyst composition comprising about 2 to about 80 wt % one or more zeolite, about 15 to about 50 wt % quasicrystalline boehmite, about 0 to about 50 wt % microcrystalline boehmite, and greater than about 0 to about 25 wt % silica.

    Process and hydrocarbon soluble saline hydride catalyst for hydrogen mediated saline hydride initiated anionic chain transfer polymerization and polymer distribution compositions produced therefrom

    公开(公告)号:US11667736B2

    公开(公告)日:2023-06-06

    申请号:US17184774

    申请日:2021-02-25

    IPC分类号: C08F112/08 C08F2/38

    摘要: This invention relates to processes for forming hydrogen mediated saline hydride initiated anionic polymer distributions via novel polymerization conditions in which molecular hydrogen is a chain transfer agent and a Lithium Aminoalkoxide Complexed Saline Hydride (LOXSH) forms an anionic polymer chain initiating species by addition of saline hydride to an anionically polymerizable hydrocarbon monomer. This invention further relates to polystyrene compositions having greatly improved microstructures free of co-product polymer chain distributions. This invention also relates to novel hydrocarbon soluble saline hydride catalyst and reagent compositions useful in conducting the hydrogen mediated saline hydride initiated polymerizations of this invention. This invention further relates to hydrocarbon soluble lithium hydride catalysts and reagent compositions formed from dimethylaminoethanol, an alkyllithium reagent and molecular hydrogen. It also relates to the catalyst forming processes, the use of the catalyst in hydrogen mediated anionic polymerization of styrene (HMAPS) and the resulting low molecular weight polystyrene distributions of low asymmetry and high “head to tail” microstructure.