公开(公告)号：US20230381737A1

公开(公告)日：2023-11-30

申请号：US18066456

申请日：2022-12-15

Applicant: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Ju Eun KIM ,  Seok Ju HONG ,  Woo Yong UM

IPC: B01J20/08 ,  C01G29/00 ,  C01G51/00 ,  C01G53/00 ,  B01J20/12 ,  B01J20/30

CPC classification number: B01J20/08 ,  C01G29/006 ,  C01G51/006 ,  C01G53/006 ,  B01J20/12 ,  B01J20/3085 ,  B01J20/3042 ,  C01P2002/22

Abstract: The present invention relates to a method of preparing a buffer material composed of bentonite modified with a layered double hydroxide (LDH) as a buffer material used for deep geological disposal of radioactive waste, the method including a step (a) of producing a first mixture by adding a compound containing a divalent cationic material, aluminum nitrate (Al(NO3)3), and bismuth nitrate (Bi(NO3)3) to a reactor.