公开(公告)号：US20240307861A1

公开(公告)日：2024-09-19

申请号：US18601509

申请日：2024-03-11

Applicant: TIANJIN UNIVERSITY

Inventor： Jinlong GONG ,  Wei Wang ,  Sai Chen ,  Chunlei Pei ,  Zhijian Zhao

IPC: B01J37/02 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J23/06 ,  B01J23/08 ,  B01J23/22 ,  B01J23/26 ,  B01J23/34 ,  B01J23/847 ,  B01J29/076 ,  B01J37/00 ,  B01J37/08 ,  C07C5/32

CPC classification number: B01J37/024 ,  B01J21/04 ,  B01J21/063 ,  B01J21/08 ,  B01J23/06 ,  B01J23/08 ,  B01J23/22 ,  B01J23/26 ,  B01J23/34 ,  B01J23/8472 ,  B01J29/076 ,  B01J37/009 ,  B01J37/0236 ,  B01J37/088 ,  C07C5/324 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/08 ,  C07C2523/06 ,  C07C2523/08 ,  C07C2523/22 ,  C07C2523/26 ,  C07C2523/34 ,  C07C2523/745 ,  C07C2523/847 ,  C07C2529/076

Abstract: The present disclosure discloses a supported polymetallic oxide tandem catalyst, preparation method and application thereof, a surface of the support is supported with an oxide of metal A and then with metal vanadate nano-particles; and the oxide of metal A serves as a direct dehydrogenation catalytic site, and the metal vanadate nano-particles serve as a selective hydrogen combustion site. In the application of the tandem catalyst, dehydrogenation site and selective hydrogen combustion site are coupled at the nano-scale, and this coupling mechanism shifts the reaction equilibrium to the alkenes through the selective combustion of byproduct hydrogen, which effectively surpasses the thermodynamic limit; and meanwhile, the combustion of hydrogen releases chemical energy, and provides heat energy through direct heating, enabling the self-heating operation of the reaction. The present disclosure has the outstanding advantages of high single-pass conversion rate of light alkanes and high selectivity towards target product alkenes.