公开(公告)号：US20210106979A1

公开(公告)日：2021-04-15

申请号：US16828063

申请日：2020-03-24

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION ,  KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Dalyoung YOON ,  Chang Hwan KIM ,  Tae Sun CHANG ,  Iljeong HEO ,  Sung Hun LEE ,  Young Woo YOU

IPC: B01J23/46 ,  B01J21/06 ,  B01J23/10 ,  B01J37/02 ,  B01J37/08 ,  B01D53/94

Abstract: A manufacturing method thereof, and the catalyst for removing the nitrogen oxide includes a powdery gamma alumina support on which at least one selected from a group of titanium (Ti), lanthanum (La), or zirconium (Zr) is supported, wherein the support may be further supported with iridium (Ir) and ruthenium (Ru).

公开(公告)号：US20210155489A1

公开(公告)日：2021-05-27

申请号：US17058208

申请日：2019-05-02

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Na Young KANG ,  Yong Ki PARK ,  Chang Hwan KIM ,  Yu Jin LEE

IPC: C01B39/38 ,  C01B33/26 ,  B01J29/40 ,  C07C2/86

Abstract: The present invention relates to a method for preparing ZSM-5 zeolite. The present invention can provide a method for preparing ZSM-5 zeolite comprising the steps of: preparing a first solution in a solution state by heating a mixture comprising a silica source, an alumina source, a neutralizing agent and a crystalline ZSM-5 nucleus; preparing a reaction mother liquid by mixing a second solution comprising salts into the first solution; and continuously crystallizing by continuously supplying the reaction mother liquid to a hydrothermal synthesis reactor, wherein formula [1] below is satisfied. 0.20≤Wa/Wb≤0.40  Formula [1]