Title:
METHOD FOR PREPARING PURE M1 PHASE MOVTENBOX CATALYST WITH HIGH SPECIFIC SURFACE AREA
Document Type and Number:
WIPO Patent Application WO/2020/014850
Kind Code:
A1
Abstract:
The invention provides 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.
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Inventors:
HUANG WEIXIN (CN)
ZHANG XUANYU (CN)
WEI ZEYUE (CN)
YOU RUI (CN)
ZHANG XUANYU (CN)
WEI ZEYUE (CN)
YOU RUI (CN)
Application Number:
PCT/CN2018/095872
Publication Date:
January 23, 2020
Filing Date:
July 17, 2018
Export Citation:
Assignee:
UNIV SCIENCE & TECHNOLOGY CHINA (CN)
International Classes:
C07C11/04; B01J23/28
Foreign References:
| CN101612564A | 2009-12-30 | |||
| CN104941668A | 2015-09-30 | |||
| CN101703941A | 2010-05-12 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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