Vanadium-phosphorus catalyst and preparation method thereof
A technology of catalysts and vanadium phosphorus oxides, applied in chemical instruments and methods, physical/chemical process catalysts, organic chemistry, etc., can solve the problems of low catalyst activity and poor selectivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0036] Add 25g of vanadium pentoxide to a mixed solution of 250ml of isobutanol and 100ml of benzyl alcohol, start stirring and slowly add about 29.5g of 105wt.% phosphoric acid, heat the mixed solution to reflux and then reflux for 16h, stop heating, filter the mixed solution and use After washing with isobutanol, the resulting filter cake was dried at 120° C. for 20 h to obtain precursor A. Precursor A was mixed with 300ml ethylene glycol, heated to 100°C and stirred for 3 hours, cooled, filtered and washed with acetone, and the obtained filter cake was dried at 120°C for 20 hours to obtain precursor B. Precursor B was calcined at 250 °C for 3 h in an air atmosphere, then heated to 425 °C for 3 h in an atmosphere with a volume ratio of 20% air / 20% nitrogen / 10% carbon dioxide / 50% water vapor, and finally baked at 40% nitrogen / 10 The active catalyst C1 was obtained by calcining at 450° C. for 3 h in an atmosphere of % carbon dioxide / 50% water vapor. Gained catalyst feeds in 1...
Embodiment 2
[0044] Add 25g of vanadium pentoxide to a mixed solution of 200ml of isobutanol and 200ml of benzyl alcohol, start stirring and slowly add about 29.5g of 105wt.% phosphoric acid, heat the mixed solution to reflux and then reflux for 16h, stop heating, filter the mixed solution and use After washing with isobutanol, the resulting filter cake was dried at 120° C. for 20 h to obtain precursor A. Precursor A was mixed with 300ml ethylene glycol, heated to 100°C and stirred for 3 hours, cooled, filtered and washed with acetone, and the obtained filter cake was dried at 120°C for 20 hours to obtain precursor B. Precursor B was calcined at 250 °C for 3 h in an air atmosphere, then heated to 425 °C for 3 h in an atmosphere with a volume ratio of 20% air / 20% nitrogen / 10% carbon dioxide / 50% water vapor, and finally baked at 40% nitrogen / 10 The active catalyst C2 was obtained by calcining at 450° C. for 3 h in an atmosphere of % carbon dioxide / 50% water vapor. Gained catalyst feeds in 1...
Embodiment 3
[0046] Add 25g of vanadium pentoxide to a mixed solution of 250ml of isobutanol and 100ml of benzyl alcohol, start stirring and slowly add about 29.5g of 105wt.% phosphoric acid, heat the mixed solution to reflux and then reflux for 16h, stop heating, filter the mixed solution and use After washing with isobutanol, the resulting filter cake was dried at 120° C. for 20 h to obtain precursor A. Precursor A was mixed with 300ml of acetone, heated to reflux and stirred for 3 hours, filtered and washed with acetone, and the obtained filter cake was dried at 120°C for 20 hours to obtain precursor B. Precursor B was calcined at 250 °C for 3 h in an air atmosphere, then heated to 425 °C for 3 h in an atmosphere with a volume ratio of 20% air / 20% nitrogen / 10% carbon dioxide / 50% water vapor, and finally baked at 40% nitrogen / 10 The active catalyst C3 was obtained by calcining at 450° C. for 3 h in an atmosphere of % carbon dioxide / 50% water vapor. Gained catalyst feeds in 1.5vol% butan...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More - Generate Ideas
- Intellectual Property
- Life Sciences
- Materials
- Tech Scout
- Unparalleled Data Quality
- Higher Quality Content
- 60% Fewer Hallucinations
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com