Gasoline desulfurization catalytic adsorbent, and preparation method and desulfurization method thereof

An adsorbent and gasoline technology, applied in chemical instruments and methods, physical/chemical process catalysts, refining with oxygen-containing compounds, etc., can solve problems such as low work efficiency and long desulfurization time, so as to improve work efficiency and reduce desulfurization time Effect

Inactive Publication Date: 2014-02-19
ANYANG INST OF TECH
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They all carry out catalytic oxidation of gasoline first, and then extract with extractant or adsorb with adsorbent, which is carried out in two steps; they have the disadvantages of low work efficiency and long desulfurization time

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: The composition ratio, preparation method and desulfurization method of this gasoline desulfurization catalytic adsorbent are as follows.

[0017] 5.5g A1 (NO 3 ) 3 9H 2 O was made into a 25wt% aqueous solution, and then 7.0mL tetraethyl orthosilicate and 2.5g Ti were added in sequence 3 (PW 12 o 40 ) 4 , and then stirred at room temperature for gelation, and finally filtered, dried, and roasted at 500°C for 4 hours to obtain 5.03 g of desulfurization catalytic adsorbent. The catalytic adsorbent has an average pore diameter of 1.73nm, a pore volume of 0.34ml / g, and a specific surface area of ​​426.53m 2 / g; content of each component: Ti 3 (PW 12 o 40 ) 4 50wt%, SiO 2 35wt% and Al 2 o 3 15wt%.

[0018] The above Ti 3 (PW 12 o 40 ) 4 Prepared by the following method: firstly, hydrolyze n-butyl titanate to produce Ti(OH) 4 , then Ti(OH) 4 React with phosphotungstic acid to produce Ti 3 (PW 12 o 40 ) 4 , the Ti(OH) 4 The molar ratio wi...

Embodiment 2

[0020] Example 2: The composition ratio, preparation method and desulfurization method of the gasoline desulfurization catalytic adsorbent are as follows.

[0021] 7.4g A1 (NO 3 ) 3 9H 2 O was made into a 20wt% aqueous solution, and then 7.5mL tetraethyl orthosilicate and 2.0g Ti 3 (PW 12 o 40 ) 4 , and then stirred at room temperature to perform gelation, and finally filtered, dried, and roasted at 500°C for 4 hours to obtain 5.05 g of desulfurization catalytic adsorbent. The catalytic adsorbent has an average pore diameter of 1.81nm, a pore volume of 0.37ml / g, and a specific surface area of ​​435.38m 2 / g; content of each component: Ti 3 (PW 12 o 40 ) 4 40wt%, SiO 2 40wt% and Al 2 o 3 20wt%.

[0022] Take 100g of simulated gasoline, the amount of catalyst used is 5% of the gasoline mass, the amount of tert-butyl hydroperoxide (O / S molar ratio) is 5:1, react at 50°C for 1 hour, and filter to obtain refined gasoline with a sulfur content of 43μg / g, the desul...

Embodiment 3

[0023] Example 3: The composition ratio, preparation method and desulfurization method of this gasoline desulfurization catalytic adsorbent are as follows.

[0024] 7.4g A1 (NO 3 ) 3 9H 2 O was made into a 25wt% aqueous solution, and then 5.6mL tetraethyl orthosilicate and 2.5g Ti were added in sequence 3 (PW 12 o 40 ) 4 , and then stirred at room temperature to perform gelation, and finally filtered, dried, and calcined at 500°C for 4 hours to obtain 5.00 g of desulfurization catalytic adsorbent. The catalytic adsorbent has an average pore diameter of 1.62nm, a pore volume of 0.26ml / g, and a specific surface area of ​​395.21m 2 / g; content of each component: Ti 3 (PW 12 o 40 ) 4 50wt%, SiO 2 30wt% and Al 2 o3 20wt%.

[0025] Take 100g of simulated gasoline, the amount of catalyst is 7% of the gasoline mass, the amount of tert-butyl hydroperoxide (O / S molar ratio) is 3:1, react at 50°C for 2h, and filter to obtain refined gasoline with a sulfur content of 26μg / ...

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

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a gasoline desulfurization catalytic adsorbent, and a preparation method and a desulfurization method thereof. The gasoline desulfurization catalytic adsorbent comprises the components by the weight percentage: 40%-60% of Ti3(PW12O40)4, 25%-40% of SiO2, and 15%-20% of Al2O3. Addition of Ti3(PW12O40)4 in the catalytic adsorbent can accelerate decomposition of tert-butyl hydroperoxide, oxygen obtained by decomposing tert-butyl hydroperoxide is increased, and thus an oxidative desulfurization reaction of dibenzothiophene is promoted; and at the same time, the gasoline desulfurization catalytic adsorbent has good catalytic oxidation and adsorption abilities. The gasoline desulfurization catalytic adsorbent can adopt adsorption to remove oxidation products while allowing an oxidation reaction of sulfides in gasoline to be carried out, does not need to adopt water washing extraction or water washing adsorption to remove the oxidation products, thereby omitting water washing extraction or water washing adsorption in the prior art, improving the work efficiency, and reducing the gasoline desulfurization time.

Description

technical field [0001] The invention relates to a gasoline desulfurization catalytic adsorbent, a preparation method thereof and a desulfurization method. Background technique [0002] With the increasing awareness of environmental protection around the world, countries around the world have formulated stricter fuel oil standards to restrict sulfur content. Traditional hydrodesulfurization technology needs to operate under high temperature and high pressure conditions, and the reaction conditions are harsh. Oxidative desulfurization technology has relatively mild operating conditions (it can be carried out at room temperature and normal pressure), high selectivity, and thiophene sulfides that are difficult to remove under hydrogenation conditions can be oxidized and removed under mild oxidation reaction conditions, and Hydrogen is not required, so it is gaining more and more attention. [0003] The CN 1382199A (2002) patent of Phillips Petroleum Company discloses that a bi...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30B01J27/188C10G25/02C10G27/12
Inventor 张艳维王艳飞张楠黄建平曹巍波
Owner ANYANG INST OF TECH
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