公开(公告)号：US11583845B2

公开(公告)日：2023-02-21

申请号：US17260534

申请日：2018-07-17

Applicant: University of Science and Technology of China

Inventor： Weixin Huang ,  Xuanyu Zhang ,  Zeyue Wei ,  Rui You

IPC: B01J23/28 ,  B01J37/10 ,  B01J35/10 ,  B01J37/04

Abstract: Provided is a method of preparing a pure M1 phase MoVTeNb-oxide catalyst with a high specific surface area, including S1) mixing and dissolving a molybdenum-containing compound, a vanadium-containing compound, a tellurium-containing compound, a niobium-containing compound and a protective agent to obtain a precursor-protective agent mixed solution, in which the protective agent is a surfactant or a small molecule organic acid and a salt thereof; S2) subjecting the precursor-protective agent mixed solution to a hydrothermal reaction to separate out a solid; S3) calcining the solid in an air atmosphere, followed by calcining the same in an inert gas, and then performing a hydrogen peroxide purification treatment to obtain a pure M1 phase MoVTeNb-oxide catalyst. This catalyst exhibits an excellent conversion rate, selectivity, space time yield and stability in the oxidative dehydrogenation reaction of ethane for preparing ethylene.

公开(公告)号：US20210322966A1

公开(公告)日：2021-10-21

申请号：US17260534

申请日：2018-07-17

Applicant: University of Science and Technology of China

Inventor： Weixin Huang ,  Xuanyu Zhang ,  Zeyue Wei ,  Rui You

IPC: B01J37/10 ,  B01J23/28 ,  B01J35/10 ,  B01J37/04

Abstract: A method of preparing a pure M1 phase MoVTeNbOx catalyst with a high specific surface area, comprising the following steps: S1) mixing and dissolving a molybdenum-containing compound, a vanadium-containing compound, a tellurium-containing compound, a niobium-containing compound and a protective agent to obtain a precursor-protective agent mixed solution, in which the protective agent is a surfactant or a small molecule organic acid and a salt thereof; S2) subjecting the precursor-protective agent mixed solution to a hydrothermal reaction to separate out a solid; S3) calcining the solid in an air atmosphere, followed by calcining the same in an inert gas, and then performing a hydrogen peroxide purification treatment to obtain a pure M1 phase MoVTeNbOx catalyst. The MoVTeNbOx composite oxide catalyst synthesized by the method has high pore volume and high specific surface area, and exhibits an excellent conversion rate, selectivity, space time yield and stability in the oxidative dehydrogenation reaction of ethane for preparing ethylene.