US 12,214,341 B1
Method for preparing a catalyst for pyrolysis of waste plastics to produce oil and use thereof
Yaqing Zhang, Qingdao (CN); Jiayu Zhu, Qingdao (CN); Peng Liang, Qingdao (CN); Xiang Wang, Qingdao (CN); Haifeng Zhou, Qingdao (CN); Tiantian Jiao, Qingdao (CN); Qing Liu, Qingdao (CN); Xiangping Li, Qingdao (CN); Guoming Zhao, Qingdao (CN); and Wenrui Zhang, Qingdao (CN)
Assigned to SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Qingdao (CN)
Filed by SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Qingdao (CN)
Filed on May 28, 2024, as Appl. No. 18/676,367.
Int. Cl. B01J 37/02 (2006.01); B01J 21/18 (2006.01); B01J 23/06 (2006.01); B01J 23/28 (2006.01); B01J 23/34 (2006.01); B01J 23/75 (2006.01); B01J 23/755 (2006.01); B01J 37/00 (2006.01); B01J 37/06 (2006.01); B01J 37/08 (2006.01); B01J 37/34 (2006.01); C10B 53/07 (2006.01); C10B 57/12 (2006.01); C10G 1/10 (2006.01)
CPC B01J 37/0207 (2013.01) [B01J 21/18 (2013.01); B01J 23/06 (2013.01); B01J 23/28 (2013.01); B01J 23/34 (2013.01); B01J 23/75 (2013.01); B01J 23/755 (2013.01); B01J 37/0036 (2013.01); B01J 37/009 (2013.01); B01J 37/0236 (2013.01); B01J 37/06 (2013.01); B01J 37/08 (2013.01); B01J 37/343 (2013.01); C10B 53/07 (2013.01); C10B 57/12 (2013.01); C10G 1/10 (2013.01); C10G 2300/1003 (2013.01)] 6 Claims
 
1. A method for preparing a catalyst for pyrolysis of waste plastics to produce oil, wherein comprising:
Step 1: washing and modifying coal gangue powder with acid to obtain acid-modified coal gangue powder;
Step 2: placing the acid-modified coal gangue powder of Step 1 in an alkaline solution, and etching under magnetic stirring for 20-30 minutes, then washing with water until neutral;
Step 3: placing the washed coal gangue powder of step 2 in a solution containing metal ions, and loading the metal ions onto the washed coal gangue powder by impregnation, and then filtering and washing to obtain a catalyst loaded with metal;
Step 4: placing the catalyst loaded with metal of Step 3 into a molding machine, and adding with adhesive and water, to compress into a shape;
Step 5: drying the compressed catalyst of Step 4, then calcinating in a muffle furnace, and activating to obtain a product;
wherein in Step 2, the alkaline solution is a weak base with a concentration of 0.5 mol·L−1;
a volume ratio of the coal gangue powder to the weak base is 1:1.0-1.5; and
the weak base is a solution of n-butylamine.