Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Synthesis method of novel ionic liquid and application of novel ionic liquid to oil product denitrification

An ionic liquid and oil technology, applied in the petroleum industry, refined hydrocarbon oil, etc., can solve the problems of high cost of raw materials, large consumption, complicated preparation, etc. Simple and easy to use and operate

Inactive Publication Date: 2013-09-18
QINGDAO UNIV OF SCI & TECH
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the extraction method has become the focus of research because of its simple operation and high denitrification rate. The conventional extraction agent is acid or organic solvent, but this type of extraction agent has problems such as large consumption, environmental pollution, corrosion of equipment, and difficulty in recycling (road Mengmeng et al. Chemical Technology, 19(1), 2011)
As a class of designable solvents, ionic liquids are also used to remove oil nitrogen compounds (CN 101861374 A, CN 102391311 A). Although ionic liquids can avoid the shortcomings of traditional extractants, the ionic liquids currently used are all Imidazole-based ionic liquids have the disadvantages of high cost of raw materials, complicated preparation, and difficulty in industrialization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Synthesis method of novel ionic liquid and application of novel ionic liquid to oil product denitrification
  • Synthesis method of novel ionic liquid and application of novel ionic liquid to oil product denitrification
  • Synthesis method of novel ionic liquid and application of novel ionic liquid to oil product denitrification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: DMAHHSO 4 Synthesis

[0024] Synthesis steps: Add 0.2 mol of concentrated sulfuric acid dropwise to 0.22 mol of N,N-dimethylaniline under the condition of ice-water bath, the dropwise addition is completed within 30 min, under nitrogen protection, keep stirring at 50°C for 5 hours, and the product is mixed with ethyl acetate The ester and petroleum ether were washed three times successively, and the solvent was distilled off under reduced pressure.

[0025] DMAHHSO obtained by reaction 4 with V 乙醇 :V 乙酸乙酯 =5:7 mixed solution was recrystallized to obtain colorless crystals with a yield of 74.11%, and the measured melting point of the product was 89-91°C; 1 H-NMR (500MHZ, D 2 O): δ3.25(s,6H), 7.45(m,5H),7.97(s,1H)IR(KBr,ν / cm -1 ):ν3440 cm -1 ,3030cm -1 ,2921 cm -1 ,1598 cm -1 , 1496 cm -1 ,1466 cm -1 , 852 cm -1 .

Embodiment 2

[0026] Example 2: DMAHH 2 PO 4 Synthesis

[0027] The synthesis steps are the same as Example 1, only the reactant sulfuric acid is changed to phosphoric acid, and the reaction obtains DMAHH 2 PO 4 It is a colorless transparent liquid, which is a liquid with high viscosity at high temperature, and condenses into a colorless solid gel at room temperature, with a yield of 70.2%;

[0028] 1 H-NMR (500MHZ,D 2 O): δ3.24(s,6H), 7.43(m,5H),7.98(s,1H); IR(KBr,ν / cm -1 ):3453 cm -1 ,3032 cm -1 ,2970cm -1 ,1649 cm -1 ,1596 cm -1 ,1105cm -1 .

Embodiment 3

[0029] Example 3: DMAHBF 4 Synthesis

[0030] The synthesis steps are the same as in Example 1, only the reactant sulfuric acid is changed to fluoboric acid, and the obtained DMAHBF 4 It is a light green translucent liquid with good fluidity at high temperature. After cooling, a light green solid is obtained with a yield of 97%. Since the ionic liquid easily absorbs water in the air, the melting point of the solid cannot be accurately determined.

[0031] 1 H-NMR (500MHZ,D 2 O): δ3.25(s,6H), 7.44(m,5H),7.96(s,1H); IR(KBr,ν / cm -1 ):3006 cm -1 ,2921 cm -1 ,2856 cm -1 ,1599 cm -1 ,1497 cm -1 ,1084 cm -1 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a synthesis method of novel ionic liquid and application of the novel ionic liquid to oil product denitrification. The synthesis method is characterized by comprising the following steps: with N,N-dimethylaniline as a raw material, carrying out direct acidification or acidification after alkylation and introducing anions HSO<4->, H2PO<4-> and BF<4->, thus preparing Br.nsted acidic ionic liquid. The ionic liquid is taken as an extraction agent, can efficiently remove such heterocyclic nitrides in simulated oil products as aniline, pyridine, quinoline and indole under mild conditions and has actual oil product 93# gasoline denitrification rate above 85%.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to the synthesis of an ionic liquid and its application in denitrogenation of oil products, in particular to the synthesis of an N,N-xylidine ionic liquid and its application in denitrogenation of oil products application. technical background [0002] With the increasingly stringent environmental protection requirements, the quality requirements of fuel products are getting higher and higher, and the N content of allowed oil products is getting lower and lower. At the same time, the existence of trace nitrogen compounds will inhibit the deep hydrodesulfurization and hydrodearomatization of oil (Tong Fengya et al. Petroleum Refining and Chemical Industry, 42 (12), 2011). [0003] Organic nitrogen compounds in oil products can be roughly divided into two categories: one is non-heterocyclic compounds (including aliphatic amines, anilines and nitrile compounds); the other is hetero...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C10G29/20
Inventor 于世涛王辉解从霞刘福胜李露刘仕伟
Owner QINGDAO UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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