-
公开(公告)号:US20220363556A1
公开(公告)日:2022-11-17
申请号:US17768391
申请日:2020-10-13
发明人: Svetlana MINTOVA , Jean-Pierre GILSON , Nikolai NESTERENKO , Delphine MINOUX , Cindy AQUINO , Julien GRAND , Florent DUBRAY
IPC分类号: C01B39/48
摘要: The present disclosure relates to a novel staged-synthesis method for introduction of various metals in the structure of zeolite frameworks by isomorphous substitution. This new method is based on a hydrothermal synthesis in which the metal addition to the precursor suspensions (gel) is delayed. This so-called “staged-synthesis method” allows to obtain nanosized silanol highly homo- geneous crystalline zeolite structures with a control of the metal location.
-
2.
公开(公告)号:US20220356129A1
公开(公告)日:2022-11-10
申请号:US17770188
申请日:2020-10-26
发明人: Florent DUBRAY , Svetlana MINTOVA , Jean-Pierre GILSON , Stanislav KONNOV , Stijn VAN DAELE , Nikolai NESTERENKO
摘要: Process for the conversion of non-oxidative coupling of methane to ethylene, under non-oxidative conditions, comprising: providing a first stream containing at least 50 vol. % of methane based on the total volume of said first stream; providing a catalyst; putting in contact said first stream with said catalyst at a weight hour space velocity ranging from 0.5 to 100 h−1, a temperature ranging from 500° C. to 1100° C. and a pressure ranging from 0.1 MPa to 5 Mpa in the absence of oxygen; recovering a second stream containing unconverted methane if any, ethylene and hydrocarbons having at least 2 carbon atoms. Said process is remarkable in that said catalyst is a synthetic zeolite material, containing at least one metal M with silicon to metal M molar ratio Si/M as determined by inductively coupled plasma optical emission spectrometry ranging from 100 to 65440 and in that said metal M is incorporated inside of the zeolite tetrahedral sites.
-
公开(公告)号:US20220371904A1
公开(公告)日:2022-11-24
申请号:US17768590
申请日:2020-10-13
发明人: Cindy AQUINO , Svetlana MINTOVA , Jean-Pierre GILSON , Florent DUBRAY , Delphine MINOUX , Julien GRAND , Nikolai NESTERENKO
摘要: The present disclosure relates to a novel method for introducing various metals in the structure of zeolite frameworks by isomorphous substitution. This new method is based on a hydrothermal reaction of the metal with the zeolite. This method allows obtaining zeolite with a structure and with control of the metal location.
-
-