Catalyst and preparation method, hydrotreating method of vanillin tar
A technology for catalytic hydrogenation and hydrotreating, which is applied in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc. The effect of solid waste generation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 5
[0028] In Example 5, different batches of phenol hydroxylated tars were used from those in Examples 1-4. The composition of vanillin tar: 16% vanillin, 47% 5-formyl vanillin, 20% vanillin di-focus Oil and 17% phenolic tar containing aldehyde groups.
[0029] The analytical method and calculation process adopted in the implementation process of the technical solution of the present invention are as follows:
[0030] The product concentration was analyzed by liquid chromatography, and the standard curve method was used for accurate quantification.
[0031] Liquid chromatography model: Shimadzu LC-20AT high performance liquid chromatograph;
[0032] Column model: Waters XSelect HSS T3;
[0033] Detection wavelength: 233nm
[0034] Mobile phase: acetonitrile / water (containing 0.1% phosphoric acid in water) = 35 / 65
[0035] The hydrocracking reaction performance of vanillin tar was measured using guaiacol selectivity and effective tar recovery:
[0036] Guaiacol selectivity=gu...
Embodiment 1
[0040] Weigh 10g of titanium dioxide and dissolve it in a 20ml aqueous solution in a round-bottomed flask, add 0.1g palladium nitrate dihydrate solid, 0.1g platinum nitrate solid, 0.01g cesium carbonate solid under constant stirring, continue stirring for 2 hours, and then close the stirring, After standing for 4 hours, the excess aqueous solution was removed by rotary evaporation, dried overnight for 12 hours, calcined at 400 °C for 4 hours, and finally reduced at 300 °C for 2 hours under a hydrogen atmosphere to obtain cesium salt-modified Pd / TiO 2 , Pt / TiO 2catalyst. 0.05 g of the titanium dioxide supported catalyst prepared above, 10 g of ethanol and 5 g of tar were added to the reaction kettle, and the air in the reaction kettle was replaced by hydrogen for 5 times. Under the conditions of temperature 100 ° C, pressure 1 MPa, and stirring speed 500 rpm, the reaction was carried out for 2 h, and then cooled. After reaching room temperature, the reaction solution was taken...
Embodiment 2
[0042] Weigh 10g of titanium dioxide and dissolve it in a 100ml aqueous solution in a round-bottomed flask, add 0.3g palladium nitrate dihydrate solid, 0.3g platinum nitrate solid, 0.03g cesium carbonate solid under constant stirring, continue stirring after 6 hours, close the stirring, After standing for 12 hours, the excess aqueous solution was removed by rotary evaporation, dried overnight for 12 hours, calcined at 500 °C for 6 hours, and finally reduced at 400 °C for 5 hours under a hydrogen atmosphere to obtain cesium salt-modified Pd / TiO 2 , Pt / TiO 2 catalyst. Take 0.2 g of the titanium dioxide supported catalyst prepared above, 20 g of ethanol and 5 g of tar into the reaction kettle, replace the air in the reaction kettle with hydrogen 5 times, at a temperature of 150 ° C, a pressure of 2 MPa, and a stirring speed of 800 rpm, react for 5 h, and cool to room temperature. , take out the reaction solution, filter out the catalyst, the filtrate is the hydrocracking reactio...
PUM
| Property | Measurement | Unit |
|---|---|---|
| wavelength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to view more - R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap