Hydroxyl functionalized heteropolyacid catalyst as well as preparation method and application thereof

A heteropolyacid and functionalized technology, which is applied in the direction of carbon compound catalysts, physical/chemical process catalysts, catalysts, etc., can solve the problems of bad influence on fuel quality indicators, catalyst loss, high cost, etc., and achieve excellent recovery utilization rate and desulfurization conditions Gentle, problem-solving effect on recycling

Inactive Publication Date: 2018-04-03
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the ionic liquid oxidative desulfurization process can greatly improve the desulfurization rate compared with the traditional desulfurization process, there are still many unavoidable problems

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
  • Hydroxyl functionalized heteropolyacid catalyst as well as preparation method and application thereof
  • Hydroxyl functionalized heteropolyacid catalyst as well as preparation method and application thereof
  • Hydroxyl functionalized heteropolyacid catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] The preparation method of the hydroxyl-functionalized heteropolyacid catalyst provided in the embodiment of the present invention includes: reacting a halogenated alkane with a tertiary hydroxyamine to form a quaternary ammonium salt intermediate, and then allowing the quaternary ammonium salt intermediate and the heteropolyacid in a liquid phase system mixed reaction in the middle to prepare the hydroxyl-functionalized heteropolyacid catalyst.

[0040] In some embodiments, the preparation method comprises:

[0041] The hydroxyl tertiary amine and the halogenated alkane are mixed in a solvent and reacted at 50-90 ° C for 2-6 h, then cooled and separated to obtain the quaternary ammonium salt intermediate;

[0042] The quaternary ammonium salt intermediate and the heteropoly acid are respectively prepared into aqueous solutions, the aqueous solution of the quaternary ammonium salt intermediate and the aqueous solution of the heteropoly acid are mixed and reacted at 10-30...

Example Embodiment

[0077] Embodiment 1 [(C 18 H 37 )N + (CH 3 ) 2 (C 2 H 4 OH)] 3 PW 12 O 40

[0078] 1) Catalyst synthesis (see figure 1 )

[0079] Bromooctadecane (166.71g, 0.5mol) and N,N-dimethylethanolamine (44.56g, 0.5mol) were placed in a 1L round-bottomed flask, added to 400mL of ethyl acetate, heated to reflux for 4h, and then cooled to room temperature, a solid was precipitated, and 188.25 g of intermediate product were obtained by filtration [(C 18 H 37 )N + (CH 3 ) 2 (C 2 H 4 OH)]Br; take the intermediate product [(C 18 H 37 )N + (CH 3 ) 2 (C 2 H 4 OH)]Br (16.80g, 39.8mmol) was dissolved in 100mL of deionized water, phosphotungstic acid (38.16g, 13.3mmol) was dissolved in 100mL of deionized water, the two aqueous solutions were mixed and stirred for 2h, the system produced a white precipitate , filtered, the solid product was washed three times with 20 mL of deionized water, and dried under vacuum at 40° C. to obtain 50.14 g of a white solid with a yield of 9...

Example Embodiment

[0086] Embodiment 2 [(C 10 H 21 )N + (CH 3 )(C 2 H 4 OH) 2 ] 4 SiW 12 O 40

[0087] Bromodecane (110.54g, 0.5mol) and N-methyldiethanolamine (59.68g, 0.5mol) were placed in a 1L round-bottom flask, added to 400mL of ethyl acetate, heated under reflux for 4h, and then cooled to room temperature, Precipitate solid, filter to obtain 139.56g intermediate product [(C 10 H 21 )N + (CH 3 )(C 2 H 4 OH) 2 ]Br; take the intermediate product [(C 10 H 21 )N + (CH 3 )(C 2 H 4 OH) 2 ]Br (34.04g, 100mmol) was dissolved in 100mL deionized water, silicotungstic acid (71.98g, 25mmol) was dissolved in 150mL deionized water, the two aqueous solutions were mixed and stirred for 2h, the system produced a white precipitate, filtered, solid The product was washed three times with 20 mL of deionized water, and dried under vacuum at 40° C. to obtain 95.45 g of a white solid with a yield of 90.1%. 1 H NMR(400MHz,DMSO-d6)δ4.12(m,4H),3.73(m,4H),3.50(m,2H),3.31(s,3H),1.77(m,2H),1.26...

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 discloses a hydroxyl functionalized heteropolyacid catalyst as well as a preparation method and an application thereof. The cationic structure of the hydroxyl functionalized heteropolyacid catalyst contains hydroxyl. Preferably, the hydroxyl functionalized heteropolyacid catalyst has the structure shown in the description, wherein R1 is C2-C45 alkyl, R2, R3 and R4 are selected from C1-C25 alkyl or hydroxyalkyl, at least one of R2, R3 and R4 contains hydroxyl, Zn- is heteropolyacid radical, and n is any integer of 1-8. The hydroxyl functionalized heteropolyacid catalyst can be used in the oxidative desulfurization process, for example, the sulfur content of fuel can be decreased to 70% or below at the normal temperature while the quality indexes such as olefin content, octanenumber and the like of fuel are not affected, besides, and the hydroxyl functionalized heteropolyacid catalyst can still keep 50% desulfurization efficiency or above after being recycled.

Description

technical field [0001] The invention specifically relates to a hydroxyl-functionalized heteropolyacid catalyst, its preparation method and application, such as the application in oxidation extraction desulfurization, and belongs to the field of gasoline and diesel desulfurization and chemical catalysis in petroleum refining process. Background technique [0002] In recent years, the problems of smog and acid rain have become the main problems of air pollution, and the SOx produced by the combustion of sulfide in fuel oil is the main source of acid rain and air pollution. In order to reduce environmental pollution, countries have successively issued policies on the sulfide content standards in fuel oil, which has prompted domestic and foreign oil companies to actively study corresponding clean gasoline production technologies. Currently, hydrodesulfurization technology is widely used in industry. However, due to the large steric hindrance of dibenzothiophene and its derivati...

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): B01J31/18B01J27/188B01J27/19C10G27/04
CPCB01J23/30B01J27/188B01J27/19C07C2527/188C10G27/04C10G2300/305C10G2300/70
Inventor 童丁毅赵云星曾红玲刘丹孙俪文蔡涛刘升高栾波姚刚王耀伟
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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