A kind of method for preparing hexamethylbenzene with cardanol and methanol as raw materials
A technology of hexamethylbenzene and cardanol, applied in the field of preparation of hexamethylbenzene, can solve the problems of three wastes, low yield, high energy consumption, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0041] Preparation of hexamethylbenzene from cardanol and methanol:
[0042] (1) Add 5g of 20-40 mesh granular solid catalyst in the reaction tube, place it in a tubular heating furnace, heat it to 300°C, feed nitrogen, and the pressure is normal pressure;
[0043] (2) Cardanol and methanol are mixed at a volume ratio of 1:1 and then pumped into the nitrogen flow through the material, and the mixed gas-liquid material enters the fixed-bed catalytic reactor, and reacts at a temperature of 300 ° C to generate hexamethylbenzene;
[0044] (3) The above-mentioned crude product hexamethylbenzene is recrystallized, and the solvent used for recrystallization purification is dichloromethane and benzene to obtain the finished product of hexamethylbenzene, and its target selectivity (mass ratio of hexamethylbenzene in the crystallization product) ) was 27.9%; product (crystal product) yield was 82.3%.
Embodiment 2
[0046] Preparation of hexamethylbenzene from cardanol and methanol:
[0047] (1) Add 5g of 20-40 mesh granular solid catalyst into the reaction tube, place it in a tubular heating furnace, heat it to 350°C, feed nitrogen, and the pressure is normal pressure;
[0048] (2) Cardanol and methanol are mixed at a volume ratio of 1:1 and then pumped into the nitrogen flow through the material, and the mixed gas-liquid material enters the fixed-bed catalytic reactor, and reacts at a temperature of 350 ° C to generate hexamethylbenzene;
[0049] (3) Recrystallize the above-mentioned crude product hexamethylbenzene, and the solvents used for recrystallization and purification are dichloromethane and benzene to obtain finished hexamethylbenzene with a target selectivity of 96.1% and a product yield of 80.7%.
Embodiment 3
[0051] Preparation of hexamethylbenzene from cardanol and methanol:
[0052] (1) Add 5g of 20-40 mesh granular solid catalyst into the reaction tube, place it in a tubular heating furnace, heat it to 400°C, feed nitrogen, and the pressure is normal pressure;
[0053] (2) Cardanol and methanol are mixed at a volume ratio of 1:1 and then pumped into the nitrogen stream through the material, and the mixed gas-liquid material enters the fixed-bed catalytic reactor, and reacts at a temperature of 400 ° C to generate hexamethylbenzene;
[0054] (3) Recrystallize the crude product of hexamethylbenzene to obtain the finished product of hexamethylbenzene. The solvents used for recrystallization and purification are dichloromethane and benzene, and the target selectivity is 98.9%; the product yield is 73.6%.
PUM
Property | Measurement | Unit |
---|---|---|
melting point | aaaaa | aaaaa |
boiling point | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- 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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com