公开(公告)号：US20240101428A1

公开(公告)日：2024-03-28

申请号：US18013285

申请日：2022-04-27

Applicant: SOUTHEAST UNIVERSITY

Inventor： Huiyan ZHANG ,  Dongyang JIANG ,  Qingyu LIU ,  Ru HONG ,  Bo PENG ,  Rui XIAO

IPC: C01B32/162 ,  B01J23/86 ,  B01J23/94 ,  C01B3/26

CPC classification number: C01B32/162 ,  B01J23/862 ,  B01J23/94 ,  C01B3/26 ,  B82Y40/00 ,  C01B2203/0277 ,  C01B2203/06 ,  C01B2203/1023 ,  C01B2203/1047 ,  C01B2203/1235

Abstract: A meshed catalyst based high-yield preparation and regeneration method for carbon nanotubes and hydrogen includes the following steps: step one, adding waste plastic into a low-temperature pyrolysis section, conducting slow heating, and continuously introducing nitrogen; step two, using a multilayer stainless steel mesh obtained through laminated pressing and vacuum sintering as a catalyst, introducing the volatiles into a high-temperature catalytic section, conducting a catalytic reaction under the action of a meshed stainless steel catalyst obtained through acid etching and calcination pretreatment, generating the carbon nanotubes on a surface of the catalyst, and meanwhile generating high-purity hydrogen; and step three, after temperature drop, conducting ultrasonic treatment on a stainless steel mesh after the reaction, achieving physical stripping of the carbon nanotubes from the stainless steel mesh, then placing the stainless steel mesh subjected to secondary calcination in a system for recycling, and regenerating the carbon nanotubes and the hydrogen.