公开(公告)号：US20220219997A1

公开(公告)日：2022-07-14

申请号：US17612686

申请日：2020-05-20

申请人： TOTAL SE

发明人： Nicolas BARRIER ,  Philippe BOULLAY ,  Maxime DEBOST ,  Jean-Pierre GILSON ,  Julien GRAND ,  Delphine MINOUX ,  Svetlana MINTOVA ,  Nikolai NESTERENKO

IPC分类号： C01B39/46 ,  B01J20/18 ,  B01D53/02

摘要： The present disclosure relates to an RHO-type zeolite comprising caesium and M1 wherein M1 is selected from Na and/or Li remarkable in that it has a Si/Al molar ratio comprised between 1.2 and 3.0 as determined by 29Si magic angle spinning nuclear magnetic resonance, in that the RHO-type zeolite has a specific surface area comprised between 40 m2g−1 and 250 m2g−1 as determined by N2 adsorption measurements, in that the RHO-type zeolite being in the form of one or more nanoparticles with an average crystal size comprised between 10 nm and 400 nm as determined by scanning electron microscopy wherein said nanoparticles form monodispersed nanocrystals or form aggregates of nanocrystals having an average size ranging from 100 nm to 500 nm, as determined by scanning electron microscopy. Amorphous precursors, devoid of an organic structure-directing agent, as well as a method for preparation of these amorphous precursors in the absence of such organic structure-directing agent and method for preparation of the RHO-type zeolites, are alos described. Finally, the use of the RHO-type zeolite as a sorbent for carbon dioxide is also demonstrated.

公开(公告)号：US20220212163A1

公开(公告)日：2022-07-07

申请号：US17617211

申请日：2020-05-20

申请人： TOTAL SE

发明人： Nicolas BARRIER ,  Philippe BOULLAY ,  Jean-Pierre GILSON ,  Julien GRAND ,  Delphine MINOUX ,  Svetlana MINTOVA ,  Nikolai NESTERENKO ,  Maxime DEBOST

IPC分类号： B01J20/18 ,  B01J20/28 ,  B01J20/30 ,  C01B39/46

摘要： The present disclosure relates to a chabazite-type zeolite, comprising at least two cages composed of 4- and 8-membered rings connected by one 6-membered double ring, remarkable in that it has a Si/Al molar ratio comprised between 1 and 15, in that it comprises caesium and potassium with a Cs/K molar ratio of at most 5.0 and in that it forms nanoparticles with an average crystal size comprised between 5 nm and 250 nm and with a specific surface area comprised between 50 m2g−1 and 200 m2g−1. Amorphous precursors, devoid of an organic structure-directing agent, as well as a method for preparation of these amorphous precursors in the absence of such organic structure-directing agent and method for preparation of the chabazite-type zeolite, are also described. Finally, the use of the chabazite-type zeolite as a sorbent for carbon dioxide is also demonstrated.